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maireeka
Joined: 29 Aug 2004
Posts: 299
Location: North Alabama
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 Posted: Thu Dec 23, 2004 3:44 pm Post subject: engine dying out |
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I know it's a vague question, but can anyone tell me a few things that could be going wrong if:
upon startup, the car always dies if its not given some gas for at least a minute or two
sometimes it doesnt want to go when i'm starting up in first
I think the latter may be because I'm starting the car in third gear. It's only happened a couple of times, and I'm not used to manuals or this car's crazy gearbox where 1st gear is in the top middle position instead of top left.
patrick
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1977 Porsche 924 red and READY! |
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Smoothie
Joined: 01 Jan 2003
Posts: 8032
Location: DE (the one near MD, PA, NJ)
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| Posted: Fri Dec 24, 2004 12:21 am Post subject: Re: engine dying out |
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| maireeka wrote: | | upon startup, the car always dies if its not given some gas for at least a minute or two |
If everything else is right (valve timing, ignition timing, good fuel, good compression, correct air:fuel mixture and idle setting, fuel pressure,etc.), then my first choice would be a problem with your AAV (auxiliary air valve) - it's supposed to be opened when cold to raise the idle speed, providing more air and fuel during warm-up. Second choice would be the warm-up regulator (WUR) that provides more fuel, enriching the air:fuel mix during warm-up. The AAV can be checked by removing, placing it in a freezer to see that the valve opens and removing it to warm air and applying 12 volts to see that it closes when heated. The WUR is tested on the car with a CIS tester.
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'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox |
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maireeka
Joined: 29 Aug 2004
Posts: 299
Location: North Alabama
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| Posted: Fri Dec 24, 2004 3:00 am Post subject: |
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thanks a lot, now i have a list of things to check! 
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1977 Porsche 924 red and READY! |
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Joes924Racer
Joined: 03 Nov 2002
Posts: 11964
Location: Oregon, Denver Colorado native!
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| Posted: Sat Dec 25, 2004 8:43 am Post subject: |
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 Hows it going Pat.
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1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo. |
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maireeka
Joined: 29 Aug 2004
Posts: 299
Location: North Alabama
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| Posted: Sat Dec 25, 2004 9:06 am Post subject: |
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It's OK, I think it may be just an idle that's too too low. I've been getting a lot better at the stick etc, but it's been too cold to check any of the stuff smoothie mentioned.
I found out it was probably the idle when I finally got the tach hooked back up and it was reading like <500rpm at idle. I think it should probably be closer to 750-1000, so I'm going to tweak the screw next time I'm out messing with the car. I also realized that I've been driving it at like less than 2500 rpm all the time because it's so loud and I wasn't sure what it sounded like at higher revs. Now that I know what the engine's doing, I can drive a little happier.
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1977 Porsche 924 red and READY! |
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