RE: [DML] High !dle 3000 RPM!
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RE: [DML] High !dle 3000 RPM!



John & Chris,

 

As Johnny said that may not mean the ECU is bad. I?ve been meaning to reply
directly to your post but my free time is very limited at the moment. The
high idle cause is most likely a loose connection at the thermister, a bad
ECU or thermister in that order of probability. Using the test I gave Johnny
will help determine that more precisely. Hey Johnny thanks for the offer but
if I accepted everyone who has offered me free drinks for tech advice I?d be
too hammered to do anything else most of the time!

 

Rob Grady,

 

P.J.Grady Inc.

 

   _____  

From: dmcnews@xxxxxxxxxxxxxxx [mailto:dmcnews@xxxxxxxxxxxxxxx] On Behalf Of
John M
Sent: Tuesday, May 13, 2008 5:48 PM
To: dmcnews@xxxxxxxxxxxxxxx
Subject: Re: [DML] High !dle 3000 RPM!

 

Chris-This may not be true. 

I had a high idle problem after I changed my clutch and bled the 
slave. I found a great step by step troubleshooting guide for a 
high idle problem. When I unplugged my ECU the idle returned to 
normal. I thought I too found the problem so I called Rob and was 
ready to order a new ECU. Rob Grady, as always, came through for 
me. I tested my thermister, by taking an ohm meter and checking, if 
memory serves me correctly pin numbers 9 & 11 on the ECU plug. It 
showed an open circuit, BINGO. What I had done was bump the 
thermister plug loose when bleeding the slave. I reached my hand in 
between the intake (Valley of death) and pushed on the thermister 
plug. It fixed the problem. When you unplug the ECU I guess it 
bypasses the thermister so you can't really tell what is not working 
unless you ohm the pins. Before you do this, check to make sure 
your idle motor vibrates with the key on(but car not running). Many 
of the idle system components are inter linked and need to be 
systematically checked one by one. Once one checks OK, go to the 
next one, If they all check out, then it may be time to replace the 
ECU. I started with making sure my throttle plates were closed and 
systematically checked out each component. Good luck and feel free 
to contact me off line

P.S (Rob I owe you a few drinks at DCS-Thanks again for the TECH 
support)

John
3760 

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