MDD0101

hey i just got a 1989 GTU for 1500 with 140,000 miles on it. the car drives fine but when it idles it bounces a lot, especially right when i start it. once it warms up it gets a little more steady..but i dont know whats wrong with it. any help would be appreciated...im new to the forum and to rx7s. thanks

alwayssideways

if it revs up to 3000 and then drops down slowy ,, thats a typical rx7. accelerated warm up process.. if its all over the place. then it could be a leaky injector. or something along those lines

MDD0101

ok thanks a lot.....what else could it be? i wanna just replace or fix everything that could cause this

WonkoTheSane

iTrader: (2)

Word on the street is that Grounding can cause stuff like that, check all the engine grounds and such, or maybe even add your own to chassis. See if that helps, I know more grounding never hurts, anyway

MDD0101

thanks...anymore help would be greatly appreciated

Aaron Cake

iTrader: (1)

90% of the time, idle problems are caused by vacuum leaks and/or a bad or misadjusted TPS.

MDD0101

how can i find out what the problem is?

MDD0101

nevermind..i looked in the faq.

but now how would i go about figuring out which one of these problems im dealing with?

WonkoTheSane

iTrader: (2)

^^^^
Aaron Cake is one of those you listen to here If he says something, There's a good place to start

MDD0101

the whole engine compression thing is kinda scaring me tho..im hoping its not that.

FC-chan

fix the grounds and adjust tps first, they're easy. fixing grounds did lots for my car.

MDD0101

how do u fix the grounds? and where is the TPS?

alwayssideways

take some sand paper ,, take off one ground. scuff the mounting surface and the terminal.. bolt the ground back on and move onto the next one .. thet reminds me thats something i should do to

MDD0101

wow..i just searched grounding and the results that ppl got impressed me...im gonna do that tomorrow.

FC-chan

and for the tps search "tps adjustment" and use aaroncake's directions.