Question about 1982 Volvo 240 Series

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Fuel pump problem?

1982 Volvo 245 GL - There's a new whirring sound coming from the bottom middle of the car (in-tank fuel pump?) when the key is turned to the ACC position. The engine starts to knock and conks out when I try to drive it. Is there any way I can troubleshoot the problem before I have to call the pros?

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You actually have two fuel pumps - one in the tank (booster pump) and one under the car (main pump). The noise is probably the main pump cavitating due to the boost pump not working. Check your fuse box for the in-tank pump fuse being burnt, check the fuel relay to make sure it is clicking, and then check your boost pump to make sure it is working. If all those are okay, maybe you have a leaky hose introducing air into the system before the main pump causing the noise. Just my 2 cents...

Posted on May 16, 2010

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  • Alpino_321 May 20, 2010

    Thanks for the tips, sturmin! The noise is coming from whichever pump is accessed from the removable plate in the storage area (it's a wagon). Do you know if that would be the main pump or the booster pump?

  • sturminator1 May 29, 2010

    Could still be either. If the main one is REALLY noisy, the sound could travel. Probably the best way is to just get under the car and listen to the main pump there. I have read that you can also take off the gas cap and listen to the in-tank one there. I have been getting really good at taking my in-tank one out lately...

  • Alpino_321 May 29, 2010

    Thanks again, I'll try both of those.

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