Mustang Sputters At Low Rpm

Idle AFR has always been round 13. Its a manual 04 Mustang GT with a V8. You may have to register before you can post: click the register link above to proceed. I have a 2003 Ford Focus and it started sputtering a month ago. I'm not lugging the engine but even if I were missing / sputtering under low rpm acceleration - Sportbikes. We raced again and it did the same thing. saw that run active power was on again and RPM was on 0. Tap the to learn more about the most common Ford Mustang problems. 1) Sputters frequently at low rpms from N to 1st and 1st to 2nd if at low speed. the coil pack helped a little but still not like it should be. 99 Tacoma sputtering at low rpm. So the last few days, my MSP has started sputtering at idle. Low speed maneuvers mean feathering the clutch, keeping the revs up and maybe adding a little rear brake drag. Made me think of carbon'ed up plugs and I dismissed it at that. i have changed fuel filter, plugs and wires, air filter etc recently, but the car still continues to. engine sputters under acceleration If this is your first visit, be sure to check out the FAQ by clicking the link above. In fact, one should expect a well-tuned high performance engine to "pop" and "crackle" when the throttle is closed at high rpm. It continues to stall every once in a while and it still sometimes sputters at low rpms. A sputter at low RPM. The most important. Ford Performance's Mustang parts selection can make your early or late model Mustang stand out. saw that run active power was on again and RPM was on 0. The engine surges as I try to rev it up to 1000 pressing the pedal slowly as soon as engine speed hits one thousand, it revved all the way up to 1500 without further pressing the pedal. They are longer than kooks, which enhances the low + mid range tq. Then see how that. The problem I had was with my 1990 NA, which had mysteriously developed a deep hesitation whenever the car moved off from rest. I took it in to the dealer and they kept the car for a few weeks and said they thought it was the torque converter and replaced it. I set the timing at 6 degrees BTD with the vacuum advance disconnected and plugged, set the Dwell at 28(. A vacuum leak in a Maxima can also cause the car to sputter and backfire as it starts to accelerate from an idle. Upon it's first occurance My intuition said it was the fuel filter. Best of all, it went like Hell. 3L Power Stroke Diesel - Sputtering and at low rpm's - I have a 1999 7. 00 Busa surging and sputtering under 3000 RPMs. 0's and then at about 4 pm pulled off a best of 12. it also has somewhat of a rough idle. My 2011 mustang gt sputters at high rpms after going slowly thru some water on the road the other day sometimes it runs fine then the nextsputters and shuts of at. Average failure mileage is 65,000 miles. The wrench light came on. You are dumping a lot of fuel into the cylinders, and because of the low rpm, and the overdrive (drag) gear you are in, the excess fuels ignites and causes the backfire. When getting back in my car and starting it, the check engine light came on, flashing on/off. Thus, when the RPMs dip even to well below 1500 (as low as 1000-1100) the vehicle REMAINS in OD and bucks hard until I either regain the sense to turn off the OD or jam the accelerator down to downshift and RPMs return to ~2000. Bucking under deceleration at low RPMs in 2nd gear (automatic) - normal or unusual? Jump to Latest Follow 1 - 12 of 12 Posts. ) I've been driving a 4. I have a 2009 Ford Escape V6. A friend tried to pull the codes but he said there was NO codes. 0017"), and idle at 550 RPM, per manufacturer spec. After experimenting with lots of things that would normally address these symptoms, nothing worked, and it got dangerous to drive. I have an RM85 that I bought a couple years ago for my son, and it is not running cleanly this year. It’s one reason why Kenne Bell never uses soft rotor coatings. Edmunds also has Ford Mustang Convertible pricing, MPG, specs, pictures, safety features, consumer reviews and more. 7 hemi 3 speed auto that developed a low speed shudder around 38 to 40 mph. Replaced wires, cap, rotor, plugs, coil, and TFI control module. I have the timing set 14 degrees initial around 34 36 full. Re: '97 SL sputtering/misfiring when on the gas at low rpm while injector problems are a possibility, start with the easy stuff first. Included in the kit is an easy to connect 3 bar MAP sensor, which makes this product a perfect choice for modified 5. Idling isn't great. It feels like either a fuel problem or someking of timing issue? Possibly even spark plugs but the car is throwing no codes. + add to cart. (Of course) but it's just odd that this is just now happening. This issue is out of my league. 2015+ S550 Mustang Forum (GT, EcoBoost, GT350, GT500, Bullitt) - Mustang6G. Back off the gas and Rev's it runs on all 4. Idles fine also. Went out on a group ride with some friends and picked up a nail in my. The feeling is vey similar to the sensation of a tire out of balance. 0 liter HO motor. Check out this very low mileage adult owned 2002 Ford mustang GT Convertible with only 43,500 actual miles. How to Fix Engine Surging. It started about 2 months after I had the petcock diaphragm recall done when I ran out of gas and had to switch to reserve. Page 4 of 4. 0 4L Engine Modifications for Ranger, Sporttrac & Explorer Welcome to Ford40. Dieseling can occur in such engines. after doing that I now have a hesitation stutter that makes the whole car shake at low rpm and throttle at light load. These pulleys increase the power of your car by slowing down your power robbing accessories. I have started with the fuel system doing a pressure test and found the pressure regulator was bad. muscle car. After running the motor in stock trim, we replaced the stock heads, cam, and intake with the Edelbrock components. 0 v8, have a shudder at narrow rpm range 750-1000, especially bad on. Hey at low RPMs my car seems to sputter prety heavily at times, not always, then when i put it to the floor and it downshifts an goes up to higher 92 SOHC Sputters and hesitates at low rpmHELP PLEASE! - 3000GT/Stealth International Message Center. The RPM's just seem to hang and then very slowly rise till about 3000 then they shoot up at the same time my speed slowly increases however at first I lose a few km/hr and the motor seems as though its missing, this usually keeps up till I reach a speed of 50-80km/hr, it varies. i filled up with. bike sputters at low speed, engine sputter at low throttle, engine sputters at low rpm, engine sputters at low speed, engine sputters at low speeds, hayabusa sputtering, honda cbr600 spluttering in low revs, hyabusa sputtering at low rpm dangerous, m109r sputters at low speed, m109r sputters in gear, motorcycle sputtering at low rpm, motorcycle. Many thanks everyone. It started about 2 months after I had the petcock diaphragm recall done when I ran out of gas and had to switch to reserve. They are longer than kooks, which enhances the low + mid range tq. Which is why it would still run (no power) but still run from 4k to redline. 0 Mustang that has developed a high-load, low-RPM miss. I've put gas treatment in and if I keep a full tank it's fine, but once it gets around half a tank it sputters. This is a discussion on sputtering in low rpm range within the General Help forums, part of the LSx Technical Help Section category; +1 agree, fix first then update the rest if needed. 2005 GT sputters with 3rd gear hard acceleration Ever since I took my mustang to the race track I noticed on the way home on the highway while traveling around 60mph when I drop the car down into 3rd gear and hammer on the throttle the car will "hesitate" or "sputter" not sure if either of those are the rite two words but it feels like it is. Just finished rebuilding my motor. The first few times I rode it yesterday it didn't stall, but I noticed that it would sputter a little bit at low rpm (2-3500) when I cranked the throttle. A website dedicated to the Ford Mustang. 05 GT 5spd 48,5XX miles is hesitating, sputtering at low rpm, normal driving, under a load between gears. The MicroSquirt® EFI controller is a great low cost option for use in modified 1986-93 Ford 5. Learn the basics and more. 10-05-10 05:02 PM by joeylyrech. It feels like it hits a dead spot. After about an hr driving it the sputtering was back. It seemed to idle fine but when I would try to take off, it I didn't rev it up and let the clutch out, it would sputter and sound almost like a speed triple. The front spindle are '98 Mustang GT. We welcome all owners and enthusiasts alike. It started about 2 months after I had the petcock diaphragm recall done when I ran out of gas and had to switch to reserve. Idles fine also. and the tranny is a very beefy C-4. This is a discussion on sputtering in low rpm range within the General Help forums, part of the LSx Technical Help Section category; Having idle issues, and my car is sputtering in low rpm range, my car sat up for about two months. Any one run into a similar issue? The fuel pump did not solve the sputtering. Replaced wires, cap, rotor, plugs, coil, and TFI control module. I have a 2000 3. Welcome to AutoMember! Stop by today to check out our Used 2012 Ford Mustang V6. Re: '97 SL sputtering/misfiring when on the gas at low rpm while injector problems are a possibility, start with the easy stuff first. my jet power module says it needs 93. N14 Red Top Sputters At Low RPM Discussion in ' I have a T2000 KW with a Cummins N14 Red Top that has been sputtering between 0 and 1500 RPMs here and there. com > Tags. I have an RM85 that I bought a couple years ago for my son, and it is not running cleanly this year. After installing the ignition coil it was “rev limiting” at about 4800 rpm’s, so I went ahead and replaced everything else on the list below, now it doesn’t. Motorcycle Sputtering At Low Rpm. The 2015 Ford Mustang has 28 NHTSA complaints for the engine at 18,294 miles average. There are some spots with some pin holes. There's lots of sputtering. As soon as it warms up, it starts to idle rough, between 500 and 750 RPM. Rigid_EVO 883 spits/sputters at full throttle low rpm Sportster Motorcycle Air intake, Carburetor, EFI, Fuel, and Exhaust. A rhythmic popping sound which is not as prominent as lean under power backfires. It was really noticeable under load at low RPMs but seemed to get better as the RPMs rose - it was probably still there but the engine tends too smooth out as RPMs increase making it less noticeable. The TPS has to be loosened so you can rotate it slightly. I've put gas treatment in and if I keep a full tank it's fine, but once it gets around half a tank it sputters. 8l v6 ford mustang project car This 2000 Mustang 3. Post by airplanetech11 » Mon Jun 30, 2014 6:02 am I had the same issue, mine was doing it at low RPM such as being at a stop light and also around 1800 RPM when in Overdrive and pressing the accelerator. The Centrifugal Supercharger Explained. Idles smooth no misses. I notice a coolant leak coming from either the water pump gasket or manifold gasket (light leak) now I recently started to experience a hesitation problem during accleration and loss of power. It was running like a beauty until one day I parked at walmart, went in to grab some stuff and then when I returned to the car, I noticed it was vibrating and sputtering at low RPMs. When warmed up the. 050- 212 degrees, lobe lift. You also have your idle set at 700 RPM, is this the idle speed your looking for? You have a 572 that runs in the 9s, 700 RPM seems a little low to me. So, my bike is rediculously fast, but it kinda sputters when riding at low speeds. com and affiliated sites. Welcome to AutoMember! Stop by today to check out our Used 2012 Ford Mustang V6. - Hesitation @ low RPM Throttling / RPM's drop off car almost stalls/ afr goes into 20s - Stalling at idle on occasion - Floored it takes the fuel but is running too lean for safe operation. It doesn't do it past 1/8 throttle and the bike does not stall or die just sputters a little like there is a delay. You may have a misfire, a vacuum leak, or a clogged/faulty idle air control valve. With our Mustang tool below, simply select a model year to get started. Sputters and kicks between 1200 & 1900 RPM under normal driving conditions. The engine is now a 351w producing about 400 H. Engine sputtering at low RPMs and loss of fuel mileage. Engine bogs down/sputters at low RPM's, why? The motor has around 33,000 miles on it. 1) Sputters frequently at low rpms from N to 1st and 1st to 2nd if at low speed. 0 Mustang & Super Fords Magazine. We aim to be a friendly, educational community dedicated to everything about the Mustang EcoBoost. I just had the carbs rebuilt and put a new air cleaner on. So many possibilities of course, but again, start with the basics: Air/fuel/spark. Engine power loss and sputtering 48 Answers. My Mustang is spitting and sputtering in high gear low RPMs. High RPM really loads the bearings due acceleration and deceleration of the piston and con rod. Runs strong no coughs when mashed to the floor. Im actually nervous and infuriated that i spent money for a tune and my car is running ridiculously bad. A lot of times it just wont idle at a constant speed. If this is your first visit, be sure to check out the FAQ by clicking the link above. The engine is 175,000 miles and recently I have noticed during acceleration when at low RPMs, under a load, it sputters and in some cases backfires. Hi all! This is my first post other than pictures on this site. Sputter at very low rpm Okay so I'm having a problem with my 2006 ltr, when I give it about 1/8 throttle and hold it steady it sputters, it does it riding in all gears as well. I have taken the car in for a tune up, new plugs, checked the wires, cleaned the the MAF meter. A normal engine should pull about 20 in-Hg. Went out for an entire weekend and put together a string of low teens and high. It's time to start troubleshooting things like the throttle shafts, vacuum advance, brake booster, and BCDD actuator diaphrams. The Ford Mustang is an iconic American sports car that first debuted in 1964. The problem i'm having is that when its in low rpm's the bike kind of sputters. com and get the latest information, as well as detailed specs and features. was hoping someone may be of assistance here. The 2011 Ford Mustang has 4 problems reported for sputters and stalls while running. The engine is now a 351w producing about 400 H. The sputtering or backfiring is caused by too much air being sucked into the engine's cylinders in comparison to the amount of gas, which stops combustion in the engine momentarily. H22 will not rev above 3K RPM, and sounds like its gasping for air. Sputter, jerk at low rpm, slower boost help!! I\'m really getting pissed!! Just spent the last few wk ends (with little time I\'ve got) and replaced my fuel rail, upgraded to Nismo 555\'s 615cc, upgraded Z1 Chip, Whole new engine wire harness, new h. 427r Roush mustang loss of power and engine sputter. Also happens at low RPM. What causes an engine to sputter at high RPM? 11 12 13. It’s one reason why Kenne Bell never uses soft rotor coatings. Hello all, I am wondering if someone can help. Low idle and bad sputter Sounds like it wants to die but doesn't. Having an issue with my 07 ZZR600 at low speeds. Hey Everyone, I am having some problems with my 109. I need help with my 1999 3. engine bucking low rpm and throttle I posted this in the tdi 101 but got no chimes on it. The car was a little high. I hope someone can help me figure out why my 2007 1300R all of a sudden started sputtering when I gas it at the low to mid RPM level of each gear. I was low on gas so I thought this was the problem. if you start at the bottom of the list, you might get lucky and stumble onto the main problem but it's more likely that you won't. Sputter at low rpm/speed. There's lots of sputtering. Cap, rotor and wires have maybe 2-4 miles on them. 69 to one ratio overdrive ) in 4th maybe around 3200 ( guessing )( 1 to 1 ratio ) as it red lines at 6000 rpm doing 120 mph in 4th and the over speed govenor shuts the engine down at 6250 rpm ( like running out of fuel ) to prevent engine damage. You won't get smooth engine response below 3k rpm. Page 2 of 2 < Prev 1 2. Video, Talk about a Large Engine, World's largest Diesel Engine starting. To test the problem, the driver presses down on the gas peddle. Its a manual 04 Mustang GT with a V8. The engine would idle perfectly, but as soon as you put your foot on the gas pedal, the revs would drop from 800 to about 500 rpm, then slowly build back up then from 1000 rpm everything would be fine. I need help with my 1999 3. Ignition break up causes a misfire, and the power loss is usually milder and not jerky like that of a sputter. I was low on gas so I thought this was the problem. A car sputters when accelerating due to the fact air and fuel is not being properly mixed, therefore, forcing the car to run on unburned fuel. Normally occurs when traveling uphill, but has occured on flat roads in traffic (Not fun when said traffic is oncoming). Selling a drop in ready to go tr3650 swap will come with pedal aluminum drive shaft short throw shifter 10 spline rst mecloud twin disk and 8 bolt mecloud billet flywheel both less that 3k miles trans has 100k miles same as car and can prove also comes with billet clutch quadrant fire wall adjuster and adjustable cable stock no pop outs no grinds no issues of any sort. 000 miles ( first owner ) Few months back I noticed that my Camry is sputtering on low RPM below 2000 ( but never when engine is cold ). to accelerate, requiring heavy throttle input to force a downshift and get moving. I'm presuming that this is because of the low rpm, but would like some input into it. if after this tank, the sputtering doesnt clear up, should i move to the next step and replace the plugs?. - Hesitation @ low RPM Throttling / RPM's drop off car almost stalls/ afr goes into 20s - Stalling at idle on occasion - Floored it takes the fuel but is running too lean for safe operation. Having an issue with my 07 ZZR600 at low speeds. When it dies does it seem like it's running out of gas, sputtering and such or does it just die? This sounds an awful lot like a problem I had with a car of mine a few years back - I'd be driving it and the engine would just die, but no sputtering or anything, like I turned off the ignition. We have the biggest selection of pre-owned vehicles for the cheapest prices. My 2003 ford mustang is sputtering and the check engine light is blinking no code Stuck manifold runners could provide lousy low rpm performance and perfect high. I had put fuel system cleaner in it earlier that same day. When I take the car out and step on it it begins to sputter once it reaches 5800 RPMs either in the low/high gears. 650 horsepower. 1st or 2nd gear. The 2001 Ford F-150 has 4 problems reported for bucks in overdrive at low rpm. Follow Torque News on YouTube, the ability to rev quickly and rev to 8200 RPM, the less you have to shift on a track the. But that was older tech, would think the newer stuff would catch it. MY 2001 FORD MUSTANG HAS A HESITATION WHEN TAKING OFF IT SPUTTERS ALSO WHEN GOING UP A STEEP IT JERKS - Answered by a verified Ford Mechanic. Then it runs well. 2k miles on the car. 0 4L Engine Modifications for Ranger, Sporttrac & Explorer Welcome to Ford40. 1965 GT & Pony Instrument cluster only. I raced my buddy the other day and when we raced, my car was pulling good until about 4000 rpm. it's a weird strange feeling. If your boat is equipped with the ESA module and two switches on the port side of the motor (shift interrupt and overthrow) then i would first check these out. Like when I take a sharp right corner and have to gear down into second, probably should gear down to first, then step on the gas again to accellerate. Discussion in 'Issues, Repairs, Warranty, TSB, Recalls' started by bigriver, Apr 27, 2018. Ranger & B-Series - 86 Ranger sputters and stalls, runs up and down at low rpm - My mother owns an 86 Ranger 2wd 2. Performance parts for your 2011-2014 Ford Mustang GT. Dieseling can occur in such engines. I replaced the spark plugs and the problem went away for about 500 miles, I didn't check the gaps. 2008 Ford Shelby Mustang GT500 KR, engine perspective, low RPM. It sputters/hesitates/misfires until I give it a good twist of the throttle. It is a 3 owner car and has never been involved. Re: Engine missing/sputtering under high load/low rpms This sounds EXACTLY like what mine was doing last year. after doing that I now have a hesitation stutter that makes the whole car shake at low rpm and throttle at light load. At one time it even seen to back fire. Selling a drop in ready to go tr3650 swap will come with pedal aluminum drive shaft short throw shifter 10 spline rst mecloud twin disk and 8 bolt mecloud billet flywheel both less that 3k miles trans has 100k miles same as car and can prove also comes with billet clutch quadrant fire wall adjuster and adjustable cable stock no pop outs no grinds no issues of any sort. Gasoline engines that are much smaller than the typical automotive engine are usually carbureted for economic and engineering reasons. What Happens When the Timing Is Advanced It has long been held, and demonstrated at the Club's Dyno Days, that advancing the timing to 13 to 14 degrees before top dead centre (BTDC) is a cheap way of achieving lower rpm performance in the Mazda MX-5 1. Nothing broke just minor scratches on left case and lower and mid faring because it was gravel. (Huge Mustang fan, but lovin' this car!). Discuss 87 mustang low rpm shudder in the alt. 2015+ S550 Mustang Forum (GT, EcoBoost, GT350, GT500, Bullitt) - Mustang6G. With its small port heads, short duration cam and long runner fuel injection manifold the 5. The car began sputtering/missing again while in gear. Acceleration is good up to about 5k rpm, then after that point it sputters and misses a lot, all the way up to redline. i filled up with. The best way I can describe noise is a metal sounding repetitive clacking that only happens when driving slow at lower RPMs (1500-2000 or so) and when taking off slowly. My car had almost no horsepower and I couldn’t get over forty (uphill, maybe 10). We are the premiere place for 1st gen and 2nd gen Dodges as well as a great source for newer models as well. that can happen @ low rpms from a stop, especially w/ double pumpers i've read, because so many guys bolt em on cause they are great for a really built motor, so yeah, check the metering rods, maybe get some smaller ones?. 65 rally-pac - hooded style - 6000 rpm - v8 chrome hoods/bezels. Learn more about Dodge Ram Pickup 3500 at the Edmunds. Which is why it would still run (no power) but still run from 4k to redline. 5/1 compression with a msd 6a and a blaster 2 coil with street pro billet distributor topped off with performer 650 carb. sputters at cruising speed (86 5. When the engine was at low rpm and I was accelerating (floored) it would sputter and run rough until I got to higher rpm, then run fine. See our New Carburetors - Quadrajet Rebuild Kit Jet Spacer Hose Pump. Your symptoms -- running lean, worse at low RPM -- suggest an air leak into the manifold. It started to sputter and could barely get up to 5000. Twice now my check engine light has come on and it would sputter at any rpm with the light on. com checks with auto manufacturers and their representatives to confirm the accuracy of the data, it makes no guarantee or warranty, either expressed or implied with respect to the data presented here. If I accelerate past 1500 the noise goes away. So by operating at low rpm/high mp you are close to peak energy input into the 6th order absorbers. I have a 1987 ford mclaren mustang which the idle surges and occassionally stals and sputters @ low rpms in gear - Answered by a verified Ford Mechanic. Mostly at highway speeds, accelerating. net Mustang Forum forums, you must first register. I discovered that one of the manifolds was cracked so I installed shorty headers. Hi Ben,try 69 primary main jet,134-39 secondary plate,65 power valve,discharge nozzle. ive had this old legend for a long long time and i just couldnt get rid of er so i decided to finally fix it up a bit i did a complete rebuild on tranny. As I rode further and got on the freeway, it was sputtering notable in any gear, any rpm that was constant. See our Intake manifolds - Ford. It stutters pretty bad on low rpm take off from a stop. if you start at the bottom of the list, you might get lucky and stumble onto the main problem but it's more likely that you won't. Amazon Affiliate Link to 20-Piece Ratcheting Wrench Set: https://amzn. The 2001 Ford F-150 has 4 problems reported for bucks in overdrive at low rpm. Learn the basics and more. Other modes are Normal and Track. Sputter at low rpm/speed. High rpms low speed spitting and sputtering - After I shift gears rpms rise like it wants me in 3 gear @ 20 mph spits and sputters or stalls out × We use cookies to help our site to work, to help us understand how it is used, and to tailor advertising on this and other sites. When warmed up the. If doing so makes the car stop sputtering, there is a problem with fuel delivery. But when the accelerator is pressed to rev up, then the engine is. You are dumping a lot of fuel into the cylinders, and because of the low rpm, and the overdrive (drag) gear you are in, the excess fuels ignites and causes the backfire. I was low on gas so I thought this was the problem. I have an 88 mustang with a new cam, springs, coil, distributer, fuel pump, spark plugs, wires, timing chain and I'm having a sputter problem if I go over 3500 rpm and if I keep pushing it it will backfire. My 96 GT has an anoying habit of sputtering at low RPM. The best way I can describe noise is a metal sounding repetitive clacking that only happens when driving slow at lower RPMs (1500-2000 or so) and when taking off slowly. 05 inches in diammeter and laced thru. Re SU needles -- The 3 screw round tops used on 72's came with N-58 needles in automatics and slightly richer N54's in 4 sp cars. His initial take is it sounds more electrical than fuel related. gradually reved up to 1500 rpm, and then attempted to rev up rpm's to plane. I shift into first at a normal rpm, and the car is sputtering and spitting, then after like 3k rpm, its as strong as ever and roars thru the rpms. Crane Camshafts for your 1994-2004 Mustang GT at RPM Outlet. Page 4 of 4. The guy never said anything about it having an issue. Presenting ams w available for purchase today online!. It only happens in low RPM, which is the range I'm stuck in driving through my neighborhood in the morning. It seems like I have a loss of power when accelerating and driving around 50-60 mph at ~2k rpm. So by operating at low rpm/high mp you are close to peak energy input into the 6th order absorbers. It was caused by valve float. The stang is still sputtering but this time is on idle-The car shakes and vibrates aggressively much more than it even with the cams I have-holding the throttle pedal down I hear the car miss firing and struggling to maintain that set rpm Does this sound like an igition coil issue?. 1 Track-tested at more than 200 mph top speed. Any idea why?. pick up, runs great , no problems, but when I switch gears and the RPM's are low it makes a sputter sound, almost like an exhaust leak. 96-00 Mustang Billet Aluminum Underdrive Pulley Kit; 1 Hour Install; Retains the stock belt size; Machined from Billet Aluminum. Follow Torque News on YouTube, the ability to rev quickly and rev to 8200 RPM, the less you have to shift on a track the. Could the cat be the problem? It is only low rpm sputter. It starts running rough going rumrumrumrumrum and wont accelerate. You want your a/f to be around. like you said when you start off it feels like 3rd gear. tends to be worse when low fuel or idle at stop. Idles smooth no misses. When I stopped to check it out I also thought I'd go ahead and fill up with gas. Car "sputters" wont climb when accelerating, not showing up on mechanics diagnostics (1991 Nissan Maxima) The First 2-3 Months It Drove Fine But For All I Know This Problem Existed Before I Bought It, As This Problem Is So Intermittent. I had a 98 Ford, 5 spd manual, that started higher rpms, and the catalytic converter was clogging. if I feather the gas you can really feel it. After doing a bunch of reading on this issue, I figured I will post my situation and see if anyone has a clue cause I'm over it. It seemed to idle fine but when I would try to take off, it I didn't rev it up and let the clutch out, it would sputter and sound almost like a speed triple. The inaugural year for the SVT Mustang Cobra, 1993, was also the last for the Fox-body Mustang. I put new spark plug wires on, new rotor and cap, and new spark plugs and it still cuts out at high rpms. I have an early 1970s lincoln 460 in my 1977 f250 truck. 2002 Mustang GT Misfire at low RPM and Idle I just had the motor rebuilt to withstand a KB supercharger. I just had the carbs rebuilt and put a new air cleaner on. The guy never said anything about it having an issue. Any way, I'm noticing that in low RPMs (not stupid low by the way, like <2,200) when accelerating I'm hearing a slight rattling/grinding noise. Engine sputters at 4000 rpm. Any thoughts or s. As such, the 1993 is the only Fox-body Cobra produced. com ® is an online automotive complaint resource that uses graphs to show automotive defect patterns, based on complaint data submitted by visitors to the. Re: '97 SL sputtering/misfiring when on the gas at low rpm while injector problems are a possibility, start with the easy stuff first. Hesitation on low RPM mustang 5. 7 hemi 3 speed auto that developed a low speed shudder around 38 to 40 mph. It might start to sputter when it hit's 3500-4500 when I try to wind it out that's when it starts. 8 v6 m90 swap high rpm sputter Douglass H. I've been combing these forums for help with a rough idle and sputter at low RPMs. 05 Mazda 6s, no mods, I have all the sudden got a sputter at Idle and Low RPM with no CEL. 65 rally-pac - hooded style - 6000 rpm - v8 chrome hoods/bezels. I'm installing a 4160 Holley with an electric choke on my 67 Mustang 289, and looking. When the car starts it idles fine at about 1000 RPM.