Question about Chevrolet 1500

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1998 chevy 1500 pick up. good fuel pump, new fuel filter,fuel relay good. starts good, dies instantly. what to check next.

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If your fuel system is all correct and working it needs to be an ignition problem-and the usual suspect is the crank sensor, which coincidently does not set a CEL-so, since it is very inexpensive (usually less than $50) and not difficult to change int a 350, take a chance there-you could try to remove the connector and clean off the connection first-worth a shot.

Posted on May 26, 2011

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It has to be eighter electical of fuel related. And even if the fuel pump is working under some condutions this year chevy is knowen to have a problem with the wireing to the pump. The wire was not a resistance wire and tended to over heat .The new pumps came with a replacement wireing harnest that was a couple feet long and did not plug into the old pump connector so it had to be cut out and the new harnest needed to be installed . Idon't know what you did but this may be your problem But if the pump and filter are new and your sure your getting a spark win the engine is turning and you know the relay is good and by the way this fuel system uses the oil pressure sending unit as a back up for the power to the fuel pump . It runs off fuse #9 and splits gose to the relay and also to the oil pressure unit so it will run even if the relay is bad . The sending unit would be another thing i would look at . Ihave wireing schamitcs for this vehicle if you want I thinks its fuel can't say for sure but check your electrical if its not that its fuel .

Posted on May 27, 2011

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