hi all i wonder if anyone can help i have just bought a 1990 turbo supra the problem i have is that it idles between 1200 and 1600 rpm

then when its warm it constantly drop s and raises itself between these figures

if anyone has any ideas it would be greatly appreciated

thanx dave

hmmm how bout a vacum leak check all the vacum pipes ect or faulty ide valve if it has one

There is a forum specifically for the mk3, I used to be on there when i had one of those cars and they saved me a hell of a lot of time and money with the advise i got.

 

I never had the problem your getting so wouldnt know what to suggest but I would deffo have another one of those motors if i could find a decent one, nicest car ive owned to drive and thats including the z!!

Check the air flow metre. Also the plastic on the metres crack now and then and give the metre the wrong reading. How well does the car rev. As said vac pipe could be loose or spit.

What ecu does it have?

im rubbish at this trouble is all tucked away its just spoilim the car its a pain in the ass

has it got an idle control valve. if so it would be my first point of call to locate and clean thoroughly! vauxhalls used to suffer from this exact problem and it was a dirty idle valve

You got any pictures of your mk3 mate? It's the only Supra I've ever liked :)

I have some where mate, will try and find them.