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99 s70 volvo has an intermittent starting issue.
Borrow a code reader from an auto parts store (free) and see if any trouble codes show up (the device will have instructions and is easy to use). That should give you a clue to the problem. Problem could be sensors of some kind. If no codes, could be a clogged fuel filter -- when was it last changed?
1999 Volvo S70
on Feb 09, 2018
1999 S70 Turbo - radio went out then five warning lights came on. Radio went off and I continued to drive without issues other than warning lights. 60 mi later radio went off and speedometer dropped
On a web search I found several people that had similar weird dash lights/operation issues. Someone thought it might be a faulty ignition switch but that was not it. The success came as follows:
"Alright fixed the problem it was an electrical relay. If you remove the cover of the fuse box under the hood there are 4 large relays. two of them are unmarked as to what they are for but I disconnected them while the car and everything was running and it turned out that one was for the lights and the other was for the interior electrical components A/C, Radio, wipers, etc. I replaced the one that I needed and all is well now. Thanks for the help $20 for a problem that had me ready to sell the car."
Your issue may be similar .. a faulty relay in the fuse/relay box under the hood...which I think is just forward of the driver side wheel well. Usually there is a legion/map on the underside of the lid that tells you what each relay and fuse is.
Good luck on your troubleshooting
1999 Volvo S70
on Jan 13, 2018
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