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1990 Volvo 760 Question: volvo no start; sputtering and stalling

 

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Visitor, 2.3L 4 Cylinder Turbo, Forestville, CA, July 30, 2010, 21:36

I am having problems with both of my Volvos, a 1989 760 turbo wagon which I just bought, and a 1990 740 turbo wagon that I have owned for several years. The 760 was well maintained and has 202,000 miles. It ran perfectly for the month I have owned it. Then, last night, I drove it to the post office, and turned it off. Five minutes later, I went to leave, and it wouldn't start. It cranks over, strong battery, good fuel pressure, power to the coil, but no spark. My boyfriend works on cars, but can't figure out where to look next.
In a stroke of great timing and coincidence, the 740, which has frequently been used for my newspaper delivery business, has begun to sputter and stall after driving fine the first 20-60 minutes. It gets progressively worse until it can barely go a few yards, and finally, fails to start until it has rested for a few hours, when the cycle repeats itself.
I am desperate to get at least one of these cars back on the road ASAP so I don't lose my job.

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  • Answer #1

    Bret Bodas from RepairPal Test Shop, August 02, 2010, 08:44
     Master

    If you have fuel pressure and spark, then it's possible the fuel injectors are not opening. There is a relay that supplies power to the injectors that often fails. It's one of the black relays attached to the shock tower in the engine compartment. (There are two, one for the injectors and one for the radiator fan). Have your bf check to see if the injectors are getting power and try swapping the relays if they aren't.

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