Idle problems

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Idle problems

02-28-2009, 10:14 AM

Post: #14

jondee86 Offline

Posting Freak

Posts: 947
Joined: Apr 2007
Reputation: 1

I have been interested in this "loping idle" phenomenon for some time,
and have yet to figure the true answer.

Basically, although cleaning or replacing the thermostatic cold start idle
up valve appears to help a lot of people, it is only part of the cause.
There is no way the capsule can expand and contract fast enough to be
the whole cause.

The true cause appears to be a combination of fuel cut switching, ECU
sub-idle "anti-stall" response, and MAP sensor reading. The fact that
you can stabilise your idle by disconnecting the MAP sensor tends to
confirm its involvement.

Have you checked for a major vacuum leak, such as a missing nose
insulator on one of your injectors ??

Cheers... jondee86

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Messages In This Thread

Idle problems - filh - 02-21-2009, 10:57 PM

[] - tolisspi - 02-21-2009, 11:44 PM

[] - filh - 02-22-2009, 01:00 AM

[] - gtsr54321 - 02-22-2009, 06:44 AM

[] - jondee86 - 02-22-2009, 10:30 AM

[] - Ivan141 - 02-22-2009, 11:53 AM

[] - filh - 02-22-2009, 03:38 PM

[] - The Doctor - 02-22-2009, 04:01 PM

[] - Sanity Clause - 02-22-2009, 07:55 PM

[] - filh - 02-23-2009, 01:00 AM

[] - filh - 02-25-2009, 12:36 AM

[] - Sanity Clause - 02-26-2009, 06:41 PM

[] - filh - 02-28-2009, 01:01 AM

[] - jondee86 - 02-28-2009 10:14 AM

[] - parrot - 02-28-2009, 01:10 PM

[] - Sanity Clause - 02-28-2009, 02:26 PM

[] - filh - 03-01-2009, 02:24 AM

[] - parrot - 03-01-2009, 03:21 AM

[] - jondee86 - 03-01-2009, 04:16 AM

[] - JonnyAE86 - 03-01-2009, 05:21 AM

[] - filh - 03-01-2009, 07:57 PM

[] - jondee86 - 03-02-2009, 01:39 AM

[] - filh - 03-05-2009, 01:26 AM

Suddenly, it all makes sense :) - jondee86 - 03-05-2009, 10:02 AM

[] - Snejk - 03-06-2009, 06:34 PM

[] - filh - 03-11-2009, 01:54 AM

[] - alimonos - 03-11-2009, 10:20 AM

[] - filh - 03-12-2009, 01:14 AM

Bouncing Idle - shawnho - 03-30-2009, 07:45 AM

Re: Bouncing Idle - jondee86 - 03-30-2009, 08:43 AM

[] - filh - 03-30-2009, 01:43 PM

Bouncing Idle Fixed - shawnho - 04-01-2009, 04:03 AM

[] - filh - 09-16-2010, 10:44 PM

Ghost in the machine :) - jondee86 - 09-17-2010, 12:03 AM

[] - filh - 09-21-2010, 10:57 PM

[] - max_ae86 - 12-23-2010, 10:18 AM

[] - max_ae86 - 12-24-2010, 09:33 AM

[] - max_ae86 - 12-25-2010, 08:05 PM

[] - max_ae86 - 12-26-2010, 05:16 PM

[] - Hachi - 12-26-2010, 05:27 PM

[] - Ivan141 - 12-26-2010, 06:15 PM

[] - Hachi - 12-26-2010, 07:59 PM

[] - jondee86 - 12-26-2010, 10:16 PM

[] - max_ae86 - 12-26-2010, 11:11 PM

[] - max_ae86 - 12-26-2010, 11:34 PM

[] - Hachi - 12-27-2010, 02:34 AM

[] - max_ae86 - 12-27-2010, 10:03 AM

[] - max_ae86 - 12-27-2010, 10:58 AM

[] - irishtwincam - 01-13-2011, 12:49 PM

[] - max_ae86 - 01-13-2011, 01:23 PM

[] - max_ae86 - 01-13-2011, 01:34 PM

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