Question about 1992 Buick Roadmaster
The oil pressure sending unit will be the problem for that primes the pum when you turn the key to the on position. You will hear the fuel pump running for 5 seconds when doing that. If the pump is running when you have the key turned to the ON position the fuel pump relay is the problem. The relay will be located under the hood on the firewall. When purchasing one buy one at a GM dealer & not an aftermarket one. Same with the pressure switch too
Posted on Jul 11, 2010
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Posted on Jan 02, 2017
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