HELP! car jolts everytime i shift gear... Faulty TPS?

[kim0663]

Ive got a 91' Trueno, 20v silvertop. Done around 170xxxkms now,

When you press the gas, it hesitates at a certain point (its around like as soon as i start pressing the gas) and then goes okay after that. So everytime i change gear, the car sort of jolts and then goes.

Didn't mind too much about it b4 but im guessing this can't be good for fuel .

Im thinking about cleaning the Throttle bodies to fix it? If anyone else knows the cause of this, please let me know so i don't waste my time on trying to clean 4x throttles

[kim0663]

anyone ?

[DexGT]

your rear engine mount could be stuffed , it would cause results similer to what you have . try moving the motor by hand at the top ,this should give you an idea of whether to investigate further

[TRD_ZERO]

Could it not be the same problem with most blacktops ....that little flatspot during acceleration.

[FULLOC]

my girls new silvertop levin does the same. was thinkin grubby throttle body too but if anyone has a good suggestion il give it a go.

[GDII]

My car did that. But its not a silver top. Just a 2E carb. I replaced the leads and went fine after that.

[79rolla]

fule filter? had problens worse then that on the 4k... just a shot in the dark...

[kim0663]

hmm leads eh...?

Well im gonna rip out the throttles tomorrow and give em a good clean first because cleaning them costs alot less than ht leads

Might even take out the fuel filter and give em a good blast with the air gun too.

will post how things go.

[ae86_gtz]

do a diagnostic test and see if you get anything. knock sensor does that kind of.

[lucasthefallen]

you cant clean the fuel filter you wolly

[GDII]

hmm leads eh...?

Well im gonna rip out the throttles tomorrow and give em a good clean first because cleaning them costs alot less than ht leads

I got them really cheap It was the last thing on my list to try and get it running properly.
But obviously mine isn't EFI so it might not be that.

[tsoob]

lots of different ideas again fullas, its gonna be process of elimination,

my car once had a problem like this it was the factory intake pipe had a large split in it and needed replacing, we used duct tape and it was ok for a while. also can be any one of the other things mentioned here or even something else.

[RS13]

I realise you've got quads, but my 16V did that, almost as soon as your foot touched the gas pedal, it would give a little "kick", then drive as normal, turned out I'd pulled a vacuum line off the throttle body accidentally. I too thought it was a buggered engine mount, even rang around getting quotes in the hundreds of dollars for a new set! lol.