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Question

Please help! Our 'P' reg Volvo 950 Classic Estate cuts out about 2/3 times per day, usually as you slow down for lights or an island. This is not a 'poor running' problem, but the mechanic changed the crankshaft sensor. It made the car run even smoother, but alas had no effect on the problem. The critical thing, and so far unexplained, is that NOTHING will get it started again EXCEPT for a wait of EXACTLY ONE MINUTE, after which it fires perfectly. I have had lots of wild theories like piezo sensors in the engine mounting brackets, but an now suspecting the petrol pump relay. Is this likely?

Submitted: 173 days and 14 hours ago.
Category: Volvo
Value: $17
Status: CLOSED
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Optional Information

Year: 1997
Make: Volvo
Model: 940 Classic Auto Est
Engine: 2316cc

Already Tried:
1) Replace camshaft sensor - no effect 2) Slapping the side of the ashtray holder (hoping to encourage the relays) worked perfectly once - started immediately, but not a reproducable remedy!!

Accepted Answer

Hello and thank you for your question...

Yes I would think your fuel pump relay might be a culprit here. In the US we did not have the 940 after 1994.... But you could confirm this somewhat by checking to see if you have spark, when the car will not spark. If you have spark, the stall was caused by fuel loss.

volvo's rule, spark first,fuel second. If you have spark, then its a fuel issue. If you have no spark, We can work on that too.

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Expert: Chris
Pos. Feedback: 100.0 %
Accepts: 697
Answered: 9/27/2009

Technician

20 Years Volvo experience, Based in Maine, Volvo certified Expert. expertvolvo.com

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