hesitation problems
#1
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so out of the blue today, my car started hesitating really bad. I would put the car at half throttle and it would hesitate for about 2 seconds and then throw me back in my seat like i was stomping on it and then it would cut back and do it again. it started getting really annoying. does anyone have any idea of what it could be? need help please
#2
TECH Veteran
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Well, let's see, you don't mention what year your car is, what mods it has (if any), whether it's manual or automatic, what gear and RPMs this happens at, whether it's throwing any codes.... not going to be getting much specific advice that way ![Winky](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_wink.gif)
Here are a variety of hesitation-related threads for you to get possible ideas from:
https://ls1tech.com/forums/pcm-diagnostics-tuning/211743-hesitation.html
https://ls1tech.com/forums/generation-iv-internal-engine/207113-hesitation.html
https://ls1tech.com/forums/pcm-diagnostics-tuning/165894-tip-throttle-hesitation.html
https://ls1tech.com/forums/new-ls1-owners-newbie-tech/180578-why-there-slight-off-idle-hesitation-fuel-injection.html
https://ls1tech.com/forums/generation-iii-internal-engine/179166-hesitation-knock.html
https://ls1tech.com/forums/new-ls1-owners-newbie-tech/173259-strange-problem.html
https://ls1tech.com/forums/generation-iii-internal-engine/169311-little-diagonosis-help-please-off-idle-hesitation.html
https://ls1tech.com/forums/pcm-diagnostics-tuning/120189-car-seems-have-no-throttle-response.html
https://ls1tech.com/forums/generation-iii-external-engine/71706-car-hesitates-surges.html
https://ls1tech.com/forums/pcm-diagnostics-tuning/181594-tuning-eliminate-cam-surge-hesitation.html
https://ls1tech.com/forums/fueling-injection/28494-i-have-problem.html
https://ls1tech.com/forums/generation-iii-external-engine/50309-hesitation-between-2000-3000-rpm.html
https://ls1tech.com/forums/generation-iii-external-engine/70067-another-hesitation-problem.html
https://ls1tech.com/forums/generation-iii-internal-engine/63681-help-me-out-weird-hesitation-motor.html
![Winky](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_wink.gif)
Here are a variety of hesitation-related threads for you to get possible ideas from:
https://ls1tech.com/forums/pcm-diagnostics-tuning/211743-hesitation.html
https://ls1tech.com/forums/generation-iv-internal-engine/207113-hesitation.html
https://ls1tech.com/forums/pcm-diagnostics-tuning/165894-tip-throttle-hesitation.html
https://ls1tech.com/forums/new-ls1-owners-newbie-tech/180578-why-there-slight-off-idle-hesitation-fuel-injection.html
https://ls1tech.com/forums/generation-iii-internal-engine/179166-hesitation-knock.html
https://ls1tech.com/forums/new-ls1-owners-newbie-tech/173259-strange-problem.html
https://ls1tech.com/forums/generation-iii-internal-engine/169311-little-diagonosis-help-please-off-idle-hesitation.html
https://ls1tech.com/forums/pcm-diagnostics-tuning/120189-car-seems-have-no-throttle-response.html
https://ls1tech.com/forums/generation-iii-external-engine/71706-car-hesitates-surges.html
https://ls1tech.com/forums/pcm-diagnostics-tuning/181594-tuning-eliminate-cam-surge-hesitation.html
https://ls1tech.com/forums/fueling-injection/28494-i-have-problem.html
https://ls1tech.com/forums/generation-iii-external-engine/50309-hesitation-between-2000-3000-rpm.html
https://ls1tech.com/forums/generation-iii-external-engine/70067-another-hesitation-problem.html
https://ls1tech.com/forums/generation-iii-internal-engine/63681-help-me-out-weird-hesitation-motor.html
#3
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sorry, my car is a 98 formula m6, lid, pacesetter lt's with true duals. this happens in every gear and at any rpm but i noticed it from idle (1000rpm's) to about 3000 rpm's and i cant tell if its throwing a code because im throwing a code for a coolant temp sensor that i havent been able to reset yet. then again this has happened once before and then quit and i drove it more tonight and it quit so i dont know what it could be
#5
Launching!
Join Date: Jan 2005
Location: Long Island, NY
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I have a very similar problem with a 99 Formula. Almost feels like the car is running out of fuel. However, if I accelerate hard, the car is fine so I know it's not a fuel filter.
Most likey that I've been able to deduce... plugs/wires, O2 sensors or MAFT
Most likey that I've been able to deduce... plugs/wires, O2 sensors or MAFT
#6
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Originally Posted by GoodlookinLS1
so out of the blue today, my car started hesitating really bad. I would put the car at half throttle and it would hesitate for about 2 seconds and then throw me back in my seat like i was stomping on it and then it would cut back and do it again. it started getting really annoying. does anyone have any idea of what it could be? need help please