1993 Chevy Blazer Fuel Pump

JRSION43

MEMBER
1993 CHEVROLET BLAZER

Electrical problem
1993 Chevy Blazer 6 cyl 180000 miles

The fuel pump continues to stay on when the switch is turned off which is causing the battery to drain. What should I check and/or change?

Thanks.

Thursday, July 8th, 2010 AT 9:33 PM

1 Reply

RICHZOMBIE

MECHANIC
173 POSTS

It sounds like your fuel pump relay is bad. Here is how to change it. The fuel pump relay is normally found on a relay bracket which is mounted to the left front fender in the engine compartment. Positioning within the bracket will vary according to model and application. Check for loose electrical connections; no other service is possible, except replacement.

REMOVAL & INSTALLATION

See Figure 1

1.Disconnect the negative battery cable.
2.Disengage the relay/electrical connector assembly from the bracket.
3.Pull the fuel pump relay from the electrical connector.

Fig. Fig. 1: Common fuel pump relay mounting

To install:

4.Install the fuel pump relay to the electrical connector.
5.Engage the relay/electrical connector assembly to the bracket.
6.Connect the negative battery cable.