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Runs Rough until Warm
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BionicBalls  



Joined: 05 Jan 2009
Posts: 642
Location: Charlotte, NC

PostPosted: Thu Aug 30, 2012 10:12 pm    Post subject: Reply with quote

I'll check it. The car starts up great and runs perfect for about 30 seconds to a minute. So I'm pretty sure AAV is doing it's job. It's the 1 min to 5 min. range that is pissing me off.
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1980 924 NA
1982 931
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Julian  



Joined: 24 Jan 2011
Posts: 74
Location: Oxford Ohio

PostPosted: Thu Aug 30, 2012 10:45 pm    Post subject: Reply with quote

Another thing I remembered was I had to replace the fith injector with a used one.
I went through this hell for several months and found several changes the PO had made to fix the idle. Including ONE misplaced vacume line. Finally I have the engine figured out and am stuck with a small wiring issue.

Great learning process, but frustrating. When you find it, post it I'd like to add it to my collection of "another place to look"
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scm924s  



Joined: 22 Oct 2010
Posts: 296
Location: Gloucester UK

PostPosted: Sat Sep 01, 2012 5:24 am    Post subject: Reply with quote

The AAV should still operate from heat soak temperature from the engine if the power supply isn't operative, albeit not as effectively. Check it is operating by applying 12v to it for 20/30 secs.
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1984 n/a Ruby Red Metallic
1988 924S Guards red- sold
1986 924S Guards Red - sold
1984 n/a Black - sold
1980 n/a Le Mans#1 - sold
1980 n/a Le Mans#2- sold
1977 Martini - sold
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BionicBalls  



Joined: 05 Jan 2009
Posts: 642
Location: Charlotte, NC

PostPosted: Sat Sep 08, 2012 9:19 am    Post subject: Reply with quote

All fuel pressures are perfect, I've got spark. I tested compression: 215, 215, 215, 25.

That's the problem. Hoping it's just needing valve adjustment. Otherwise, I will be putting an LS motor in there.
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1982 931
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