Car jerks like fuel cut but dont think it is

[cashmoney811]

ok i have a 92 gsx was running great then one day just started to jerk. So its running 18 lbs boost but know as soon as i hit around 10lbs my arf goes to 10:1 and its like fuel cut but i logged my injector pulse and its not going to 0. another think is it doesnt happon all the time just most of the time. I did a boost leak test and the only leak i have is the throttle body shaft seal which has been leaking for some time. just need some ideas on where to start to fix this problem.

sombody said somthing about the tps but his reply is gone now dont know whats going on there. Anyways i checked my tps and the bottom of its broke right where the bolt goes so its sitting in there kinda at a angle.it was still working but maybe its reading wrong some times or something. ill be replacing it tomorrow hopfully thats my problam

 

[hondo0975]

I had a similar problem with my 1g. My car would idle fine an run good as long as i stayed out of boost . Under boost i would see a little puff of black smoke come out the tail pipe an car would start jerking. I found out that it was a bad coil ,not sure witch one because when i tested them they both tested good. Took a chance an put two new ones in an my problem was gone. As far as the tps goes when you put your new one on go to VFAQ an under the intake section there is a tps ajdustment info guide very simple to do, but im guessing you already knew that. Hope this helps an good luck.

 

[srt4thatazz]

Any updates? I had this problem once on my 91 Talon. I replaced the caps in my ecu and my issue went away.

 

[Eagle96TalonTSi]

Boost leak for some time? Maybe it has progressively gotten worse and worse, now its causing boost leak during a pull.

 

[hondo0975]

I know it's been awhile but was curious as to what fixed your problem?