Where is the Fuel Pump Relay located?

LUCY CORTéS

MEMBER
2014 JEEP GRAND CHEROKEE
5.7L
V8
4WD
AUTOMATIC
160,400 MILES

I can’t find the fuel pump relay on my vehicle listed above, Limited 5.7L Hemi. I have looked in the manual as well as the fuse box and I cannot find it. Please help.

Sunday, May 1st, 2022 AT 7:01 PM

3 Replies

KASEKENNY

MECHANIC
18,907 POSTS

The fuel pump relay on this vehicle is internal to the PDC and not a serviceable relay.

You can test the circuits like a normal relay, but the relay is inside the PDC.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Let us know what is going on with this one and if we can assist with what is needed as to the specific issue.

Thanks

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Monday, May 2nd, 2022 AT 5:53 PM

LUCY CORTéS

MEMBER
2 POSTS

When the car is cold and we try and turn it on, it cranks for about 5 seconds, or even longer and then it starts. The colder the engine is, the more it does it. It used to do it once in a while, now it’s every day.

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Monday, May 2nd, 2022 AT 9:00 PM

KASEKENNY

MECHANIC
18,907 POSTS

This could be fuel related, so we need to start by checking the fuel pressure in order to confirm this.

This means we need to hook up a gauge and then check the pressure when it is doing the long crank.

Here is a guide that will help with this:
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Let me know what you find with this. Thanks

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Tuesday, May 3rd, 2022 AT 5:14 PM