Jump to content

F.i. Question On A Car.


Recommended Posts

check for vacuum leaks. An egr valve that is stuck open will cause a rough/low idle. ( it would sound like it had a big cam in it.) also check to see if the IAC motor is stuck. (Idle Air Control)

That's what it sounds like to me or a clogged pcv valve or hose...

Link to comment
Share on other sites

tps(throtal position sensor)is on top of the throtal body there the butterfly thing is . to check it turn the keyin the on position but engine off . with a digital volt meter check the green wire with the positive and black wire in the negitive one . it should be around .997-.999 .

 

the iac (idle air control) is on the side on the egr plate behind the throtal body .take it off and clean it really well with carb cleaner and then shoot some wd-40 in there to keep it from sticking .

 

it sounds like the tps is to high

 

josh

Link to comment
Share on other sites

I'd bet on a vacuum leak or similar.

 

To reset the puter in any of these vehicles, you basically leave one of the battery terminals off for like 30 minutes or whatever. Maybe a little more.. i think 30 is probably plenty though

Link to comment
Share on other sites

 

the iac (idle air control) is on the side on the egr plate behind the throtal body .take it off and clean it really well with carb cleaner and then shoot some wd-40 in there to keep it from sticking .

 

I have to disagree with the location of the Idle Air Control on a GM. IAC is located in the throttle body or in your case the throttle bodies. If it is your IAC then take it out and check it over, clean and go from there. Then check for a vacuum leak(s), throttle body base gasket, intake gasket, vacuum line........

 

If you end up dumping money into fixing the cross-fire setup don't bother!!! Put your money towards a good intake and a 4barrel carb. The cross-fires are not known for their performance!!

 

I have an 82 Camaro that had a small block but now has a big block. I still have the small block Edlebrock Perfomer intake if you are interested. (not trying to rope into something...just letting you know)

 

good luck and keep the Chevy runnin :D

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
×
  • Create New...