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BrickSykes
Joined: 05 Jun 2008 Posts: 17
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Posted: Thu Aug 07, 2008 9:49 pm Post subject: RE: High Idle? |
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Okay. My '85 635CSi is running, though it requires more 'cranking' time than it should, I think. Once the engine catches, she runs fine, never missing, even after her four-year nap. Seems that one unusual facet is a somewhat high idle, though I've heard and read that this is not unusual. When warm the tach reads a hair beyond 1,000 RPM until I 'tap' the idle control valve with a screwdriver handle when it then noticeably drops to 850 to 900. While that is higher than it should be, do you guys think the (or one) culprit is the Idle Control Valve? Or, what else should I be looking for? Also, I have a dreaded electrical drain somewhere, probably door lock or windshield washer heaters, or some such. The battery flattens after two days without running. Any clues to all this? Thanks |
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bimmerjo
Joined: 24 Jun 2006 Posts: 389 Location: Aurora, Mo
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Posted: Fri Aug 08, 2008 8:35 am Post subject: |
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I would suggest cleaning it with carb cleaner (your ICV), it is probably a little gummed up from that 4 years of sitting. i had to do the same thing to mine. _________________
1988 BMW 635CSi - Black
1988 BMW 325iX - Grey - Soon will be black
1986 BMW 325ES - Black
2008 Kawi ZZR600 - Black
1977 Custom Deluxe - Red |
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BrickSykes
Joined: 05 Jun 2008 Posts: 17
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Posted: Sat Aug 09, 2008 7:26 am Post subject: RE: High Idle? |
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Yeah...That was the first thing I'd done. I was careful, too, since I'd heard it was somewhat sensitive. It might just be worn out. Thanks |
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edjack
Joined: 04 Feb 2002 Posts: 3887 Location: San Jose, CA
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Posted: Sat Aug 09, 2008 10:04 pm Post subject: |
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Typically, the first step is cleaning the valve. If that doesn't work, replacement is the next step.
The long crank time might signal a bad fuel pump. Might try changing the fuel filter first. Pressure test is in order. _________________
Ed BMW CCA member since 1987 (Nr. 62319).
'97 540i 6 speed Aspensilber over Aubergine interior. |
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BrickSykes
Joined: 05 Jun 2008 Posts: 17
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Posted: Sat Aug 09, 2008 10:46 pm Post subject: RE: High Idle |
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Yeah, Edjack, I even have a new filter I haven't installed yet...I'll do that tomorrow. Let you know back...Thanks |
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