You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!
This hasn't happened very often (about three times in the last two months or so), but sometimes after I accelerate away from a stop and then lift off the gas, the engine will momentarily rev a little higher, even though I've lifted my foot off the gas. The car drives perfectly fine other than that. Anyone know what might be causing this?
This ad is not displayed to registered or logged-in members. Register your free account today and become a member on Mustang Forums!
it could indeed be a dirty/sticking TB. if it continues after cleaning, i would look into replacing the TPS sensor.
i had some odd throttle behavior that was fixed by replacing this. takes 20 min and $70
__________________
05 GT Prem,5spd,JLT2 w/Bama race, 4.10s, Steeda UDPs, Street Scene Gen 1 bodykit, Eibach prokit springs, hoodpins, Hurst shifter,O/R-H, various other appearance mods, Boomtube Crew Exhaust Clip
I had this problem a few years back shortly after installing my JLT-II. It didn't happen all the time and wasn't bad enough to warrant fixing it at the time. I then installed a Bama tune and started getting a severe lope at idle - I cleaned my throttle body and MAF and never had either problem again.
__________________
06 GT Vista Blue 64Ws Manual
Sequentials, 50F/35R Metallic Tint, JBA Shorty Headers, JBA Exhaust, BamaChips Tunes, JLT-II CAI, Hurst Shifter, Roush Front End
I bought my 07 used with 14k miles and it does it more often than not. I thought is was me. Everything is stock as far as I know and it seems to do it more when it's colder out. The other thing I noticed is a slight hesitation in accelaration when first starting it after it has sat awhile. It still has the orginal filter which looks pretty clean.
Nope, no aftermarket TB. Just a C&L cold air intake.
Could this be from a dirty TB?
Sounds just like an issue I was having. When I looked at the TB I found quite about of carbon build up around the butterfly valves. Cleaned infront and behind the valves and instantly noticed a better idle and elimination of rpm surging I was getting.
Scott
__________________
'05 GT Auto - Steeda CAI w/ high flow elbow and Precision Autosports Tune
BBK Shorty Headers, Bassani o/r x, JBA Axelbacks
18" shorty antenna, GT500 Spoiler, Strut tower brace, CHE LCA's, BMR adj panhard
279.03 rwhp 297.18 rwtq (93 octane)
1/4 mi - 13.42@103.95mph
DA Corrected 13.04@106.46
I get that often when i shift quick. I thought it was a lag in throttle/fuel injection resulting in a little more combustion when i press in the clutch. I guess i will have to check my TB. But the front of my tb looks clean.
__________________
2007 White Mustang GT
HID kit 6k, Steeda UDP, K&N FIPK Cold Air Intake, SCT x3 Canned Tunes, Magnaflow Cat-Back Exhaust, Magnaflow Catted X-Pipe, Prothane Motor Mount, Steeda Strut Tower Brace, Stillen Adj. Front and Rear Sway Bars, Steeda HD Panhard Brace, Steeda Billet LCA, Clear/smoked front and rear sidemarkers, LED turn lights, SHR Tru-Billet FD, JBA Shorty TC, APR Perf GTC-200 CF Wing, Steeda CMDP, APR Dry Carbon Mirrors, Mishimoto Alum. Radiator, TEIN FLEX Coilovers
I had this problem a few years back shortly after installing my JLT-II. It didn't happen all the time and wasn't bad enough to warrant fixing it at the time. I then installed a Bama tune and started getting a severe lope at idle - I cleaned my throttle body and MAF and never had either problem again.
+1
I had idleing problems, as well as what the op mentioned. Cleaned all the electronic connectors to the TB/intake and the MAF sensor, and everything was fine.
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company
Engine revs after taking foot off gas pedal...
