My 1991 volvo stall alot, with the car running i removed the fuse for the fuel relay, in the fuse panel, the car shuts off ,i replaced the fuse then restart the car, the car runs fine for several weeks. then problem reoccurs with stalling will driving. i let the car sit for a couple of minutes, restart , and car will go for appx. 5 minutes the cut off again. when i remove fuse and reinstall ,car is for for a week or two then stalling starts again. my question, where is the 25 amp fuses located under the hood
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In my experience this has been one of two things. The first and most common is a faulty fuel pump relay. (located above the fuse panel behind the ashtray) or a short somewhere in the coil/ignition system.
Here's a technique that works for me. Locate the fuel pump relay, in the fuse and relay panel. Pull the fuel pump relay and look at the bottom of the relay. You will see that the cover can be removed by carefully prying it off using a small flat blade screwdriver or an x-acto knife. Once the cover is removed, reinstall the relay. Have someone start the car while you watch the contacts on the relay. If the contacts close, the relay is OK. If you turn the key to on without starting the car, you car close the relay manually. (You can use your finger to close the relay. Listen carefully, at the fill tube with the gas cap removed. If the fuel pump is getting power you will hear the whine of the motor. If not then check the fuel pump fuse first then the 12 volts at the connector on top of the fuel tank. I've had a problem such as you described, where the car will start but stalls if you try to give it gas. I found that some GM's use a small (2 inch)section of rubber hose to connect the pump to the steel fuel line inside the tank. The hose splits which allows enough fuel to reach the engine, but not enough to run it under any load. The fuel filter should be replaced if it is suspect, but probably isn't your main problem. Hope this helps! Dano
Check the fuel relay in the fuse box they tend to burn out after a few years.. To access it. Remove the plastic cover by the cigarette lighter and remove the screw. Then remove the panel. This the big white relay on the left numbed 119 or 135. Replace it and see if this helps.
Fuel pump relay for V70 is behind the upper fuse box panel inside the engine compartment. Remove 4 Torx screws in fuse box housing, remove the panel, and voila, relays. Fuel pump relay is red and numbered 103