Recently my car started jerking a bit when Im decelerating and it gets below roughly 3k rpms. I can hear what sounds like the motor rocking in its mounts when it does it, but it stops totally when I give it just a little bit of gas. Anyone have this happen to them before?

 

yeah I have it happen in 5th gear... if i shift at 40 mph or lower. would like to know what's happening ;p

 

Do you have your foot totally off the gas, or partially on the gas?

Dale

 

I have this problem too with bad jerking when my foot is completely off the gas and slowing/coasting while in gear

 

TPS

your fuel is not cutting off properly, this suggests your ECU thinks your foot is still on the gas a bit

 

how would you go about fixing it? mine sometimes chugs when i'm on the accel too in 5th..

 

recalibrate your TPS

 

^^ how do you do that?

 

This makes sense, Ive had problems with my TPS before, thanks.

 

https://www.rx7club.com/3rd-generation-specific-1993-2002-16/fixed-my-idle-problems-backfiring-bucking-more-170731/

 

if it aint the tps check your grounds and possibly install a hyperground kit. I had that sae problem but promptly fixed it wit a $15 ground it off eBay.

 

dont look past a faulty clutch either the clutch was going out in my car and it bucked just like you explain....my engine was fine!

 

Most likely the narrow range TPS....BTW, doesn't anyone use their service manual anymore?

 

Service WHO? never heard of her.

When my TPS was bad, I had the same problem. I guess Ill just beat a dead dog and reiterate whats been said.

 

Thanks!

 

The motor rocking in it's motor mounts? Are you sure its not a bucking and not a jerking? When I had my TPS problem before I got my PFC, everytime around 2700-3200 I'd feel a fat *** lag or loss of power. Kinda like a "jerking" like what you said. But rocking in it's motor mounts... I've never felt anything like that before. Maybe you mean bucking?

Jeremy