Hi everybody.
I have a 940 1991 Volvo and about a month ago it began stalling while driving in traffic, but once one the road side it would start up again.
Sometimes it
940 engine stalling
Based on my own experience... This is one of those intermittent problems that will drive you crazy.
Absent any other test information, I'm going to assume that your car is losing spark, and that the fuel system is probably working ok.
I'm not sure if this year model uses the same thing I'm talking about, but the first thing I'd replace is the ignition module located on the left front fender inside the engine compartment. It'll have two screws attaching it to an aluminum heat sink and a five or six pin plug attached to it. Small squarish module looking thing.
The only way to troubleshoot your problem (alone) is take a timing light with you (a cheap one) and the next time it quits, attach the power leads of the timing light to the battery, attach the sensor clamp over a spark plug wire and while holding the timing light (with trigger depressed) turn the engine over with the key. If the strobe light flashes, then your problem is fuel related and you may have a problem with a fuel pump instead.
But like I said, absent more definitive test info, the module that controls the ignition is the first thing I'd go ahead and replace. If it doesn't solve the problem, keep your old module in the glove box for a spare... and post back or start looking elsewhere.
A timing light is a cheap test instrument and is easy for anyone to use on the 'spot'... eg the side of the road when the problem actually happens.
Hope this helps.
Absent any other test information, I'm going to assume that your car is losing spark, and that the fuel system is probably working ok.
I'm not sure if this year model uses the same thing I'm talking about, but the first thing I'd replace is the ignition module located on the left front fender inside the engine compartment. It'll have two screws attaching it to an aluminum heat sink and a five or six pin plug attached to it. Small squarish module looking thing.
The only way to troubleshoot your problem (alone) is take a timing light with you (a cheap one) and the next time it quits, attach the power leads of the timing light to the battery, attach the sensor clamp over a spark plug wire and while holding the timing light (with trigger depressed) turn the engine over with the key. If the strobe light flashes, then your problem is fuel related and you may have a problem with a fuel pump instead.
But like I said, absent more definitive test info, the module that controls the ignition is the first thing I'd go ahead and replace. If it doesn't solve the problem, keep your old module in the glove box for a spare... and post back or start looking elsewhere.
A timing light is a cheap test instrument and is easy for anyone to use on the 'spot'... eg the side of the road when the problem actually happens.
Hope this helps.
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