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DME RELAY

gresley

gresley

PCGB Member
Member
Can the failure of this be intermittent ? I.e. can engine cut out and then restart 40 secs. later when turned over on starter.

You can guess why I am asking!

Andrew W.
 
On my 993 C4 I had a problem where the car would sometimes fail to start - turned over OK but would not fire. Only ever happened when starting - the car never cut out whilst running. The problem was becoming pretty regular and I replaced the DME (as this was a simple and low cost point to start) - since then (about a year ago) I've never had the problem. I also now carry a spare DME! So, it might be the DME might not be! But the cost is low and it's simple to change so it might just be worth replacing it even if it just eliminates that as the cause. If you have access to a diagnostic tester (eg Durametric) then it would be worth checking for any fault codes. If you haven't got access then call your local 'indy'. Hope the above is of some help. Regards Anton
 
ORIGINAL: gresley Can the failure of this be intermittent ? I.e. can engine cut out and then restart 40 secs. later when turned over on starter. You can guess why I am asking! Andrew W. 
Click to expand...
Yes indeed it can. If I was a betting man I would put a substantial amount of money on the DME relay as being your problem if that's your symptoms. The earlier 994 numbered item is the one that's prone to failure, I don't think the revised 993 numbered ones have been known to fail, so don't see the point in carrying a spare
 
I think you mean 944 numbered item, clyde.[8|] Have just replaced mine with a 993 numbered one which I’ve had (and it’s travelled around with me) since owning the car (as a spare).[;)] The original one was surprisingly a 944 numbered one... could’ve sworn I’d checked that ages ago.
 
Many thanks for supportive and informative responses. Have now had relay changed ( it proved to be a 944 relay ) and have done further 50 miles with no failure. Hopefully that will be the end of it. Andrew W.
 
Box left hand side under "boot" lid near hinge looking from front of car to rear. Is bottom left relay in box. Andrew W.
 
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