[s-cars] No start 1992 S4

[Tom Green]

What Jerry said.  I would add that I believe he meant to substitute  
standard fuses of the same value for the CB fuses.  You don't want a  
larger fuse than the original 5 amp protecting the ECU.  I would echo  
the analysis that the most likely cause was the CB fuse opened and  
then reset.  This was probably not some spurious malfunction but a  
designed action that probably saved the ECU from damage.  I would  
recommend a thorough look for where the problem lies.  Perhaps this  
thorough wash job allowed water intrusion into the ECU or its  
connector causing the CB fuse to trip when the key was turned on?

Tom '95 S6
          '95.5 S6 avant
Knoxville, TN

On Wednesday February 29, 2012, at 7:20 AM,  
<jerryscott at wispertel.net>  wrote:

> Did you change the resetting fuses that are above the CPU, with  
> standard 15 amp blade fuses.  I had trouble with them and replaced  
> all three.  Before that I was having trouble starting in very cold  
> weather.  The later 95 models have the standard blade fuses.
>
> Jerry
>
>
>
> --- scarsgo at gmail.com wrote:
>
> From: Darin Nederhoff <scarsgo at gmail.com>
> To: "S-Car-List at Audifans.Com" <s-car-list at audifans.com>
> Cc: denisnl at infionline.net
> Subject: [s-cars] No start 1992 S4
> Date: Wed, 29 Feb 2012 07:06:56 -0600
>
> Hey gang, I'm posting this for a lister who is having trouble  
> posting....
> ------------------------------------------------------------------------------------
>
> Hi respected listers,
>
>
>
> Having been a long time owner of a RS2ed S4, I went to help a friend  
> who?s
> 1992 S4 wasn?t starting. It ran fine the day before, washed it and  
> the next
> day wouldn?t start. Engine turns over but does not catch. I figured  
> the CPS
> as the most likely culprit. Went to pull the codes with a VAG-COM, and
> could not establish communications with the ECU. Hmm. Tired the HVAC  
> and it
> responded just fine.
>
>
>
> I went to check the fuses for the ECU thinking one of them had gone.  
> Nope,
> all were intact. Went back to the VAG-COM, and presto, I can  
> communicate
> with the ECU. Car starts up pretty much right away. The only thing I  
> can
> think is that the ECU was hung, and pulling the fuse ?rebooted? it.  
> Now my
> friend wants to know how this happened, and could it happen again? I
> suppose it can happen again, because it did.
>
>
>
> I don?t remember reading anything like this over the years or did I  
> miss
> something? Ideas?
>
>
>
> Thanks in advance for any help.
>
> Regards, Denis
>
> denisnl at infionline.net
>
>
> -- 
> Darin Nederhoff
> http://S-CARS.ORG/site