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  #1  
Old Jan 25th, 14, 07:20 AM
91 Z28 91 Z28 is offline

 
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Location: Newfoundland, Canada
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Default 91 Z28 issue

I recently picked up a 91 Z28, 305 tpi, the car starts fine and idles perfectly but when I put it in gear it stalls, I'm thinking it could be the egr valve, what do u guys think?
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  #2  
Old Jan 25th, 14, 08:39 AM
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ZZ430DropTop67RS ZZ430DropTop67RS is offline
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Don
 
Join Date: May 2001
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Default Re: 91 Z28 issue

You might try looking at the IAC (idle air control) valve. The pintel can clog. Very common. Clean the tip and the passage in the throttle body with carb spray.

Also the throttle blades themselves.
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Last edited by ZZ430DropTop67RS; Jan 25th, 14 at 08:53 AM.
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Old Jan 25th, 14, 09:06 AM
91 Z28 91 Z28 is offline

 
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Default Re: 91 Z28 issue

Thanks, I'll give that a try
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  #4  
Old Jan 25th, 14, 09:20 AM
Obsessive Camaro Disorder Obsessive Camaro Disorder is offline
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Jason
 
Join Date: Oct 2011
Location: Iowa
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Default Re: 91 Z28 issue

i had a bad ignition module that acted similar. you can have it checked at a parts store.
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  #5  
Old Mar 6th, 14, 01:45 PM
91 Z28 91 Z28 is offline

 
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Default Re: 91 Z28 issue

I had the car running last night and just let it idle to see if it would she a cel, it didn't but after so long idling it just stalled, it started right back up and idled for another while before it stalled again, anyone have any idea what could be wrong?
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Old Mar 6th, 14, 02:10 PM
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Everett#2390 Everett#2390 is offline
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<Jake 68's Rule
 
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Default Re: 91 Z28 issue

Temporally install a fuel pressure gauge on the rail fitting just to see if f/pump is still working.
Could either be the pump overheating with less than a 1/4 tank of fuel or the f/pump relay having burnt contacts internally due to the current drawn overheating the closed contacts.
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Old Mar 6th, 14, 07:31 PM
Obsessive Camaro Disorder Obsessive Camaro Disorder is offline
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Jason
 
Join Date: Oct 2011
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Default Re: 91 Z28 issue

Quote:
Originally Posted by 91 Z28 View Post
anyone have any idea what could be wrong?
what have you tried so far? Did you take the ignition module to be checked?
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Old Mar 11th, 14, 03:56 PM
91 Z28 91 Z28 is offline

 
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Default Re: 91 Z28 issue

I have been working a lot lately and haven't had any time to spend at the car, hopefully gonna get at it the weekend.
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  #9  
Old Apr 7th, 14, 06:34 PM
Obsessive Camaro Disorder Obsessive Camaro Disorder is offline
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Jason
 
Join Date: Oct 2011
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Default Re: 91 Z28 issue

Get things worked out?
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