amm check? CIS or Jetronic? - Saab 900 Bulletin Board - Saabnet.com
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amm check? CIS or Jetronic?
Posted by JohnB (more from JohnB) on Thu, 26 Oct 2000 09:03:17
In Reply to: my '85 900 is stalling when hot?, Veeate, Thu, 26 Oct 2000 02:25:44
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Try disconnecting the amm when the engine is doing this...shut then engine off, disconnect the amm, start it up.
If it runs better in limphome mode, chances are it's the amm.
OTOH, I once had a problem, car died on wifey and she got a ride home. I went to pickup the car and it wouldn't start, so I disconnected the amm and it started! Drove the car home 30mi from Baltimore MD and automatically ordered a used amm from Sweeney in PA...got the amm and went out to install it and it didn't fix the problem! So I looked around the engine compartment and found an intake hose (well, it was a turbo so you won't have pressure problems) had popped off the intercooler and was giving a massive vacuum leak...amm in limphome ignores vacuum and gives fuel based on rpm signal only.
So look around and check for vacuum leaks.
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