we finally got my turbo replaced and everything put back together. now when i start my car, it seems that i have a big vacuum leak because the car wont hold an idle. we tried adjusting the TPS and the BAC, but the problem seems to be happening before those systems even get a chance to help it. could anyone show me a picture of the vacuum hoses on the backside of the engine? if not is there anywhere that we can find a diagram of the vacuum system?

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is your tid cracked?

 

no, the TID is fine.

 

will yours rev up at all you hit the gas? i think i might have intake leaks too, mine wont hold idle and will not rev past ~1000rpms. i dont get it though b/c i removed most vacuum stuff and was very carefull putting it together.

anyways... vac diagram is in factory manual and i think haynes too. factory manual is at fc3s.org

or you could try using propane to find vacuum leaks...

 

You have an atmospheric BOV? If so your valve is set to loose, if not keep on keepin on!

 

nope, i got a oneway valve for the bov so i could vent it. so nix that problem. any other suggestions?

 

So you dont know for sure if its a vacuum leak?



Also check your PM's!

 

no i'm not sure if its a vacuum leak... but i thought that would be the source of my major idle problem. what else could it be?

 

Well if youre sure you checked the TPS and BAC correctly...I dunno. Ive got a copy of the 89-91 T2 FSM on CD. If you want to meet somewhere, its yours.

 

Make sure the intercooler hoses are tight.

 

lol yeah...those will kill a car dead in its tracks. I had a friends IC pipe pop off on his miata while he was on the AUto-X course.

 

yeah i had my intercooler hose pop off cause it wasnt tightened down enough. loudest ******* pop ever... i thought i blew my engine. i **** my pants and got out of the car. luckily it was just the hose and not an apex seal.