Could it be my fuel pump relay

JAY-TROWEL TURNUP KING

MEMBER
1993 CHEVROLET CHEYENNE
5.0L
V8
2WD
AUTOMATIC
169,000 MILES

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?

Saturday, March 25th, 2017 AT 10:08 PM

2 Replies

CATAFINA

MECHANIC
98 POSTS

Could be your Relay or the fuel pump inline fuse

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Sunday, March 26th, 2017 AT 12:33 AM

STEVE W.

MECHANIC
15,233 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.

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Sunday, March 26th, 2017 AT 5:34 AM