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2000 T5 no start , starting after sitting overnight...

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
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1997 - 2004 C70

clifford06
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2000 T5 no start , starting after sitting overnight...

Post by clifford06 » Tue Apr 30, 2019 5:15 pm

Greetings .I'm back . Drove to work yesterday and ran fine ( 10miles ).. Drove home and made a 30 minute stop . Needed to cranks to start . Drove 9 miles and made a 5 minute stop . Would turn over but no start. Jumped fuel relay and still wouldn't start. Towed home. Restarted today with no problem . I suspect coolant temp sensor or cam sensor . Any thoughts ?



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Re: 2000 T5 no start , starting after sitting overnight...

Post by Klausc » Tue Apr 30, 2019 7:43 pm

The ECT sensor will not keep the engine from starting. An overheated fuel pump doesn't care if the relay is jumped, listen for the pump priming when you switch the key to posII.

There is just not enough data in your post to make an educated guess.


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clifford06
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clifford06

Re: 2000 T5 no start , starting after sitting overnight...

Post by clifford06 » Tue Apr 30, 2019 8:21 pm

Thanks for the reply. The no start issue has happened before a year or so ago. First time it was the coolant sensor with a code showing. The next time a year or so later, it was a bad fuel pump relay. I started carrying a jumper wire in case of this type of headache . The car sat for nearly 5 hours before being towed and attempted to be started at home, so the thought of a over heated fuel pump doesn't seem to be the cause in my thinking. It started on the first try after sitting overnight.



clifford06
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Re: 2000 T5 no start , starting after sitting overnight...

Post by clifford06 » Fri May 10, 2019 7:34 pm

What ohm range should a properly working crank sensor be in when testing with a digital meter ?



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Re: 2000 T5 no start , starting after sitting overnight...

Post by abscate » Sat May 11, 2019 8:49 am

Ch3ck fuel pressure at rail. ME7 needs 50 psi solid. Measuring it elimitates all the subjective guesswork and let’s ypu move on the diagnostic tree. A shot of ether is a cheaper way to determine fuel vs ignition problem.


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