Could it be my fuel pump relay

1993 CHEVROLET CHEYENNE
169,000 MILES • 5.0L • V8 • 2WD • AUTOMATIC
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JAY-TROWEL TURNUP KING
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  • 1 POST
I put a new fuel pump on truck drove it not even 2 miles and it killed on me and now it wont start its like its not getting any gas and I hear the pump cut on when I turn the switch and now I have 2 turn it a couple of times before it comes on what could it be?
Mar 25, 2017 at 10:08 PM
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CATAFINA
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  • 98 POSTS
Could be your Relay or the fuel pump inline fuse
Mar 26, 2017 at 12:33 AM
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STEVE W.
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  • 15,113 POSTS
When you replaced the pump did you also replace the connector pigtail? They were bad for loose connections caused by a failing pump heating the contacts because of the higher current draw.
A related issue is that the higher draw would also cause the pump relay to heat up and damage the connector.

If the pump is turning on for the 2 second prime but the engine won't run it's possibly a plugged filter, bad pressure regulator or even a bad oil pressure switch.

Start by running a fuel pressure test. Then try shooting a bit of starter fluid into the intake and see if it fires on that as a quick test for spark.
Mar 26, 2017 at 5:34 AM
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