Question about Volvo 240

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I have a 1991 Volvo 240 wagon that intermediately shuts off while driving. When it does shut off the lights on the dash turn on(don't know if that piece of info means anything). Also most of the time when I try to crank it back up immediately after I pull over it takes a while before it wants to run again. Anyways the funniest thing about it to me is that it runs good like a champ-until it shuts off at random. I've checked some of the fuses that where underneath the dash at the drivers side door-they looked good, and I haven't been able to figure out where the fuel pump relay is on the vehicle but I'm guessing that it's in fair condition. The fuel filter has been replaced but the pumps have not been replaced. I've also thought about checking some of the ignition system components but i don't know if that would help with diagnosing the problem. My first question is that: Is there a solution to the intermediate shutting off that will fix that problem for good? My second question is that: Is the problem some where in the Fuel System, In the Ignition System, Or Both?

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Sometimes the wires that go to the dist behind the cylinder head break loose from dist and short out on dist body. also there is a single fuse on left[as viewed from drivers seat] inner fender near the top. its in a holder with a rubber cap over it. the fuse holder gets hot and the connections in it melt and cause problems loke yours. if you pull the fuse and see heat damage sut out the fuse holder and splice in a new one.make sure the replacement has the same guage of wire or bigger on it.

Posted on Sep 11, 2010

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240 volvo wagon. occasionally as I am driving, the car hesitates as if it is about to cut off. Almost like fuel or ignition is shutting off. Replaced fuel filter with hope that was problem but that did...
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I and another guy disagreed the other day on the easiest way to access the relay. He says it is easier to remove the glove box. I thought it was easier to drop the felt liner below the dash and lay on my back on the floor and reach up. Either way works.

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WILL NOT START ALL THE TIME
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