1998 Chevy Truck 2500 won't start

Tiny
DLW0940
  • MEMBER
  • 1998 CHEVROLET TRUCK
I have a 3/4 ton 4x4 chevy truck that has 200,000 miles. I recently put an engine out of a wrecked 1999 Suburban that had 69,000 miles. It has run great for a year but in the past few weeks it would not start. The fuel pump was whining so I replaced it and it ran fine for a month or so but now it won't start again. I can get it to start with ether and it will run all day long but when you turn it off it won't start. I had it in a shop and all test ok, spark, fuel, and sensors. He thought it could be the computer but did not feel strongly enough that this was the problem to incurre the expense. Any ideas?
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Wednesday, May 16th, 2007 AT 8:22 AM

7 Replies

Tiny
AUTOPOP
  • MEMBER
Was fuel filter replaced?
I think you should check for fuel pressure and delivery volume.
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Friday, May 18th, 2007 AT 10:08 AM
Tiny
DLW0940
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The pressure and Volume tested OK. The fuel filter was changed about 11 months ago.
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Friday, May 18th, 2007 AT 10:10 AM
Tiny
AUTOPOP
  • MEMBER
Does your fuel injectors firing?
Is there check engine light on?
Let us know what you find out!
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Saturday, May 19th, 2007 AT 11:06 AM
Tiny
DLW0940
  • MEMBER
Fuel injecters tested fine. We have good spark, fuel, and compression. No check engine light. It just won't start. With ether it starts and will run. Shut it off and it won't start.
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Saturday, May 19th, 2007 AT 11:42 AM
Tiny
AUTOPOP
  • MEMBER
Separate the fuel line at the fuel filter and get about pint of fuel out and check for contamination.
Check fuel pressure regulator to make sure it is not stuck open.
Let us know what you find out!
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Tuesday, May 22nd, 2007 AT 7:39 AM
Tiny
DLW0940
  • MEMBER
The regulator is OK. All checks out. I am going to replace the computer to see if it fixes the problem. I do not like to do things this way but all our trouble shooting seems fruitless.
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Thursday, June 14th, 2007 AT 10:42 AM
Tiny
DLW0940
  • MEMBER
Finally got it to run. Even though the fuel pump was new, two weeks old when problem started, replacing it fixed the problem. Took it to the dealer and he found that when the truck set for a few hours the pressure droped to 0 when trying to start. Once it started it would hold 60#. If you cycled the pump about 30 times it would reach 60 and start. Replaced the fuel pump and all works well.
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Wednesday, November 28th, 2007 AT 7:27 AM

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