• The site migration is complete! Hopefully everything transferred properly from the multiple decades old software we were using before. If you notice any issues please let me know, thanks! Also, I'm still working on things like chatbox, etc so hopefully those will be working in the next week or two.

Acceleration Stuttering?

M

MattF

New member
Recently my car has been kind of stuttering on acceleration. It also kind of jolts back while driving at a constant speed. Anyone have any idea? I already tried unplugging the MAF sensor, didn't work. Changed the fuel filter, air filter, oil and oil filter, plugs and wires. I'm all out of ideas except maybe a few other sensors but I don't know which ones it could be.

EDIT: The catalytic convertor has recently been changed for being clogged so I don't think that's the problem

EDIT: I'm driving a 2002 Grand Prix GT
 
Last edited:


Also I forgot to mention that I just had the catalytic convertor changed for being clogged so I don't think that's the problem.
 


When my cat was clogged I changed my filter and fluid that was about 9 months ago. There is about 170,000 miles on my car
 
It's not giving any at the moment, would it be worth it to look at the TPS/O2 sensors or does this not sound like them?
 
What do you mean by kicking and jerking? How are the shifts (hard/soft?) TPS would TYPICALLY throw a code, but not always. It can be checked using a voltmeter...should start out at .5v ish at closed throttle and gradually increase to about 4.5v wide open throttle. If the voltage drops randomly, you got a bad TPS.
 


I'll be driving and it will kind of jolt back for a second, as if the power being outputted by the engine dropped by like 75% but only for about half a second and then it kicks back up which kind of causes it to kind of jolt. I'll check the TPS with a volt meter and let you guys know, if I were to disconnect the TPS and it was malfunctioning would the car run more smoothly? Or would that not be a good way to tell if it's bad
 
That won't give you a definitive answer. Could be a crank position sensor dropping out too. Just thought about that. Might be losing spark for a sec until the computer picks it up.
 
I just checked the check engine codes and it says there's a bad speed sensor, could this be the problem?
 


You must log in or register to reply here.
Back
Top