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stalling at a stop, part 2 700

posted by  HowdyPete on  Fri Oct 22 07:52 CST 2004
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last visit: Mon Oct 28 10:03 CST 2013
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I have what I think is the same problem as in the previos post. I have a 1990 740 GL automatic. As I let off the gas and coast (no brake applied), everything is fine for about 3 seconds, then the RPMs drop. It happens at all speeds, but when slowing to a stop, the RPMs drop so low that the engine dies. At freeway speeds, the RPMs stay up, which I guess is due to the wheels speed sustaining the engine revs.

The problem is more pronounced when cold. The engine idles and accelerates very well, tranny fluid is clean and proper level. Couldn't find any obvious hoses disconnected, but I'm not Mr. Goodwrench.

Would the recommendations in the previous post apply here as well? Thanks!








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stalling at a stop, part 2 700

uid 14228's pic
posted by  ladeadhead on  Sat Oct 23 13:34 CST 2004
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last visit: Tue Nov 6 17:34 CST 2007
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Or if you are really unlucky, a cracked head is leaking coolant into your cylinders. Have you been going through some coolant lately? Take a look.

Eamon
--
'Where's your common sense?' 'It left me when I was 5' http://members.sounddomain.com/ladeadhead








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stalling at a stop, part 2 700

posted by  ndesouza on  Fri Oct 22 08:23 CST 2004
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last visit: Sun Mar 18 15:14 CST 2012
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Yes it would. Your problem is either (or both) a jammed Idle Air Control (IAC) or the Throttle Position Switch (TPS) not turning 'ON' when your foot is off the accelerator.

Noel








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stalling at a stop, part 2 700

posted by  HowdyPete on  Fri Oct 22 10:33 CST 2004
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last visit: Mon Oct 28 10:03 CST 2013
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Thank you!







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