1998 gmc sonoma will start then die


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Old 06-28-10, 10:21 AM
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1998 gmc sonoma will start then die

i am having issues with my sonoma. i have checked the fuel pump and replaced my inline filter. it starts and runs for half a second then dies. it is acting like it is fuel starved. any input on this would be appreciated. along with links for parts.
 
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Old 06-29-10, 10:48 PM
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A little vague but how did you check the fuel pump? Just because it "buzzes" does not mean there is enough pressure or volume.Which brings me to the next possibility the fuel pressure regulator.There is also a fuel pump relay that may be failing.With a fuel pressure gauge that goes to at least 75 psi hooked up to the shrader valve on the rail get me the pressure reading with the key on engine off.Then turn the key off and watch the gauge and let me know how much and how fast it drops off and where it stops at.I'll be able to help more with that info.
 
 

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