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Cutting out mystery W124 (Moved post)

isobars

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300SD'79, E300TD '95, 300TDT '82, 280CE '84, 250L '84, 300SEL LPG '91, 300D '80, 300CE '91, 300E '89
Hi All,

I’m moving a copy of this plea to this part of the forum because, a) It looks more electrical than engine now, and b) Wherever the end of my wit’s are, that’s where I am.

Just an update on the problem of a cutting-out 24v 124, last post link here:

http://www.mbclub.co.uk/forums/engine/83846-w124-300-24-runs-cold-start-then-dies-when-warm.html


The electrician was due round on Monday to diagnose, so on Saturday the garage charged up the battery, and the car started up like a gem. When the electrician came on the Monday, again, once the battery was re-connected, started up and ran for over an hour with no ill effects. However, having stopped it and left it overnight, it refused to start again. However, it will start for anything up to an hour after its first start.


Could this be an immobiliser issue, perhaps?

Does a reinstated current invigorate some relay?

It’s running for longer each time, almost like it’s trying to purge a problem- what am I saying?

Anyway, can this longer running eliminate a crankshaft position sensor problem, ie, if the sensor has gone, is it gone, or can it be an intermittent fault?

The ignition barrel has around three mm of play, could that be the easy answer??

Many thanks in advance for any advice.

Cheers,

Paul
 
I know it was mentioned in the earlier thread but have you eliminated the OVP relay as the cause? I had a problem whereby the engine would randomly cut out, warm or cold or would refuse to fire. No other symptoms, car ran as smoothly as always, hot or cold, engine turned over properly when trying to start but wouldn't catch. You could leave it for 10 minutes and it would start first time.

OVP was the problem.
 
Thanks for the advice.

Any idea how I would check the integrity of the relay??

Cheers,

Paul
 
Thanks for the advice.

Any idea how I would check the integrity of the relay??

Cheers,

Paul

Paul,

Apologies for the delay in replying. The fault was diagnosed by a mechanic, which I am not!!
 

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