Re: [DML] High !dle 3000 RPM!

["John M" <giantscorner@xxxxxxxxx>]

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         

--- In dmcnews@xxxxxxxxxxxxxxx, Chris Shepherd <chrisau79@...> wrote:
>
> Try disconnecting your ECU. Black box with two plugs under the 
drivers side tray behind the seat. Pull both plugs and start the 
car. If it goes back to a good idle then you know what to replace.
> 
> Robert Hlavacek <bob.hlavacek@...> wrote:          
> When I started my D on Saturday, the idle went to 3000 RPM and 
wouldn't come down.  Tapping on the accelerator didn't work, looking 
at the throttle with the air cleaner off everything appeared OK.  I 
couldn't find anything wrong that I could see on the engine.  The 
accelerator cable came all the way back to the idle position, still 
3000-3500 RPM.  I had to drive it about 15 miles and it wasn't fun 
when I had to stop.  I resorted to shutting it off at lights.
>  
> Does anyone know what's wrong or what I might check to fix the 
problem?  The idle has always been fine with infrequent "hunting" 
for idle but that was only like 700-900 RPM and not often.
>  
> Whatever ideas you might have for me to look at, I'd appreciate 
it.  Thanks!
>  
> Bob
> 10961
> 
> [Non-text portions of this message have been removed]
> 
> 
> 
>                            
> 
> 
> Chris
> 06301
> Find me on Google Earth
> 45°43'03.24"N 123°53'45.81"W
>        
> 
> [Non-text portions of this message have been removed]
>



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