5.3 liter Chevy Fuel Problem - Engine Troubleshooting


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5.3 liter Chevy Fuel Problem

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bdez4
New User

Sep 28, 2010, 1:52 PM

Post #1 of 4 (7308 views)

5.3 liter Chevy Fuel Problem	Sign In

I've got a 2002 Chevy 1500 LS 5.3 ltr. 4x4 ext. cab. 77000 miles I am having a fuel problem Friday i drove over 200 miles and then on Saturday i drove 160 miles and truck died on highway. Thought it was the fuel pump and still may be. On Sunday after i hauled it home I started it and it idled for a couple of minutes then would die. I checked all the fuses that had anything to do with fuel checked the relay all seam good. Monday I changed the fuel filter and it ran i drove it for about 5 minutes and it ran good until I pushed throttle down about half way it would then start to die I would let off and would run fine. Then let it idle for about 5 minutes in the driveway. I then drove it about 7 miles at about the 5th mile I floored it and it ran just fine. But about a half a mile from home it died. Today i was told it may be the fuel regulator I pulled the vacuum line off and no gas came out and was told if no gas comes out it is good. I thought that if a fuel pump is bad it is bad do they get weak? Or is there something else that may be causing this problem?

Thanks

Brandon

(This post was edited by bdez4 on Sep 28, 2010, 1:54 PM)

Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Sep 28, 2010, 2:48 PM

Post #2 of 4 (7298 views)

Re: 5.3 liter Chevy Fuel Problem	Sign In

You did everything but the one test you should have started with. Use a fuel pressure gauge and measure the fuel pressure.

Here are the specs

Measure with the Key On Engine Off with the fuel pump commanded ON.

Vin (V,T,U)
Fuel Pressure (gasoline) 55-62 psi

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.

bdez4
New User

Sep 29, 2010, 3:42 PM

Post #3 of 4 (7288 views)

Re: 5.3 liter Chevy Fuel Problem	Sign In

Checked it and it had 25 psi. looks like i need a pump

Thanks

Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Sep 29, 2010, 4:19 PM

Post #4 of 4 (7284 views)

Re: 5.3 liter Chevy Fuel Problem	Sign In

Yep, if you checked it right.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.

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