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700/900 Series General Forum for the Volvo 740, 760, 780, 940, 960 & S/V90 cars |
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Not start after getting hotViews : 1833 Replies : 31Users Viewing This Thread : |
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Jul 16th, 2018, 17:47 | #1 |
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Not start after getting hot
Hi,
My Volvo starts well when it's cold. However, after it runs in low gear for a while and runs in idle for an half hour, it does not start. If I allow it cool down while bonnet is open for roughly ten or fifteen minutes, gets start immediately without hesitation. My battery and spark plugs are in good condition. What could be the reason? Thanks
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Volvo 93 940 2.0T M46 First Owner |
Jul 16th, 2018, 18:37 | #2 |
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Lack of fuel pressure?
Read elsewhere on here that fuel can return past a worn non-return valve and starve the engine when restarting? My 940 Turbo used to struggle to restart after stalling (my fault, not the engine's - mainly when parking) when up to temperature. But a quick blip of the throttle as I turned the key made it start with no issues Cheers
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Jul 16th, 2018, 20:42 | #3 |
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Is your fusebox behind the ashtray? I think some early 940s had them there. If so, check the fuseholder for the fuel pumps fuse. On some of the 740s i had, this had got hot in the past and melted, causing burning of the contacts where the fuse fits in.
This could be a possible cause of your trouble, also have you access to an exhaust gas analyser and where does the temperature gauge sit once it has run for half an hour?
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Jul 17th, 2018, 06:07 | #4 |
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Thanks for the replies.
jonnyf90, do you refer fuel pressure regulator? Laird Scooby, yes, it's behind the ashtray. I checked but couldn't find anything wrong.
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Volvo 93 940 2.0T M46 First Owner |
Jul 17th, 2018, 09:01 | #5 |
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Does it cut out whilst driving or does it only have trouble starting after you turn it off?
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Jul 17th, 2018, 09:25 | #6 |
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Common problem when the crankshaft position sensor is defective
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Jul 17th, 2018, 12:51 | #7 |
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No, it runs flawlessly whilst driving, having trouble after turning it off...
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