Sounds like its not the ECU afterall. I'd put a test-light on the power
feed to the Fuel Pump, and also to the +12 wire running to one of the
injectors. Tape the lights where you can see them while driving. If either
one of these go out or drop in voltage (dim) too much when the problem first
occurs, then you will have a better clue. The +12 injector feed should not
go away until the key is off, and the Fuel pump feed will only go off a
second or two after the engine stops running. (if it goes off as SOON as
the engine starts to die, then you'll know it's the fuel pump circuit and/or
relay)
Could just be a tiny little bit of corrosion on one of the relays.
-Phil
----- Original Message -----
From: "John" <peugeot505turbo@hotmail.com>
To: <peugeot-L@yahoogroups.com>
Sent: Tuesday, January 17, 2006 6:58 PM
Subject: [Peugeot-L] RE:1991 405 S will not stay running ... the plot
thickens
> Ok, so I pulled the codes today. Had 5 or six codes. So I cleared
> them and attempted to drive it. Got a block away and the light came
> on. Pulled a code - 52 - try another ECU. I had an ECU for an 89,
> and although I know I should not have done this, I pluged it in and
> the car ran fine. (I unpluged the idle control device.) So I drove
> it around for a while, maybe 40 miles or so. Check Engine light came
> on, checked the codes, 52 - try another ECU. Kept driving it to see
> what would happen, because it was running fine. The car stalled,
> would not restart, changed back the 91 ECU and it started right up!
> Drove around for a while, maybe another 40 miles, Light came on
> again, code 52 - try another ECU and 33 - Air flow meter. I cleared
> the codes, and it was fine the rest of the night. Any ideas?? Also,
> am I damaging anything by running the wrong ECU in the car? Another
> list member offered me a used one for a reasonable price, but A) I
> am not sure that is really the problem and B) if it is, I would
> really like to wait a few weeks, as I am still recovering for
> Christmas bills. Any thoughts or ideas??
> Thanks,
>
> John
> 1991 405 S 215,000 miles
>
>
>
>
>
>
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Received on Tue Jan 17 20:51:50 2006
