Date: Wed, 9 Sep 1998 17:13:11 -0700
Reply-To: Don Kane <dkane@MAIL.ARC.NASA.GOV>
Sender: Vanagon Mailing List <Vanagon@vanagon.com>
From: Don Kane <dkane@MAIL.ARC.NASA.GOV>
Subject: Re: AC & Idle Stabilizer
In-Reply-To: <199809091913.OAA25917@riptide.wavetech.net>
Content-Type: text/plain; charset="us-ascii"
At 02:11 PM 9/9/98 -0500, Budd Premack wrote:
>I have the same 2000 rpm idle that Mark Schrope had (List posting 7-23-98)
>when I switch on my a/c. Has it been determined that the cause is the idle
>stabilizer contol unit (by the right tail light) failing to properly close
>on idle?
snip
>
>Is there any other reasonable cause beyond the idle stabilizer control
>unit?
>If this is the prime suspect, is replacement the only option?
>
>TIA for everyone's help.
>
>Budd Premack
>86 Syncro, 73 Super
>Minneapolis, MN (Land of Sky-Blue Waters)
>
Budd,
I found a post from Jim Davis from about a year ago where he details taking
the unit apart and replacing the bad components. I haven't tried this, but
it sounds like it worked for him.
here is the post,
Don Kane
>----
>Recently I related the story of my 87 Syncro suddenly developing a +4,400 RPM
>idle. I traced this to the Idle Control Module located forward of the
>right/rear taillight. The dealer said list was $208. I called several
>wreckers and was quoted from $80 to $20 for this item. I bought the $20 one
>and it arrived yesterday.
>
>Meanwhile I was pursuing repairing the bad module. Inside the module I
>discovered two components that were suspect. The first one, a voltage
>stabilizer transistor was definitely fried. I found (from my 88 Vanagon
>module) a company logo: SGS in tall narrow letters pushed up against
>eachother & other numbers were BD 438 and 9 741. I found that an ECG or NTE
>185 was a replacement component for it. The other component was a rectifier
>diode that had some signs of being overheated but was not overtly fried as
>the other component had been. The diode had the numbers GP15G-7001 and GI
> 8641. I thingk the GI is for General Instruments. Well, found that it
>could be replaced with an NTE 125 or ECG 125.
>
>Yesterday, I installed the two new components and the bottom line is that
>after poping the module back in, my van idles normally again! :)
>
>Cost?
>NTE185: $2.25
>NTE125: $.88
>
>Total: $3.13 + tax
>
>Compared to dealer list, I saved about $205. - that's 98.5% less!! :) :)
> :)
>So now I've gone from needing a new module to having a spare for future use.
>:)
>
>Jim Davis
>87 GL Syncro
>88 GL Wolfsburg
>
| 
