Where is my fuel pump relay?

blue66tang

Founding Member

Jan 20, 2001

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Medford, OR

Oct 22, 2006

#1

• Oct 22, 2006

• #1

I am working on putting in a 89 5.0 into a jeep cj7, and foudn out tonight, after many hours of wondering and freaking out, that i dont even have a fuel pump relay. I have both engine harnesses out of the 89. I thought the fuel pump relay was up by the mass air meter, it turned out to be the WOT relay. So where the heck is the fuel pump relay and how do I hook it up. I am running a manuel trans with a Auto computer if that makes a different. I did fire it up tonight for the first time though, i ended up just hotwireing the pump for now. Everythign else whent pretty well till i gave up on the relay thing. Thanks

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

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Oct 22, 2006

#2

• Oct 22, 2006

• #2

The FP relay would have been in the harness that popped up under the driver's seat.

Here's a diagram of the FP pathway (upper left).

Good luck.

 

RYC CUKR

Founding Member

May 19, 2002

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Orlando

Oct 22, 2006

#3

• Oct 22, 2006

• #3

They only put the fuel pump relay by the MAF meter in the later years. I know 93 for certain cause that is where the relay is on my 93 but my 88 is under the passenger seat

 

C

caseywan

Member

Apr 7, 2006

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Chicago, IL

Oct 22, 2006

#4

• Oct 22, 2006

• #4

RYC CUKR said:

They only put the fuel pump relay by the MAF meter in the later years. I know 93 for certain cause that is where the relay is on my 93 but my 88 is under the passenger seat

Click to expand...

I have a 92 GT and mine is by the MAF.

 

blue66tang

Founding Member

Jan 20, 2001

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Medford, OR

Oct 22, 2006

#5

• Oct 22, 2006

• #5

No wondure i was so freaking confused. Thanks guys. ill have to get that all wired up. Anybody have any sugestions on how to make my fuel pump quieter. I have the msd high pres efi conversion fuel pump. I have it mounted just in front of the rear axle, and just under the feet of the passengers. I couldnt believe how loud it was inside the jeep.

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

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Oct 22, 2006

#6

• Oct 22, 2006

• #6

To reiterate, it is under the driver's seat (in case there was confusion).

For the pump, I've had some loud ones (mech to electric pump conversions and such) and often simply using some rubber-isolotors (read grommets) under the pump-to-chassis fasteners helped a bit.

Otherwise, creating a node/anti-node chamber can be expensive and frustrating.

Good luck.

 

RYC CUKR

Founding Member

May 19, 2002

1,437

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Orlando

Oct 22, 2006

#7

• Oct 22, 2006

• #7

Oops

For some reason I had the passenger seat on the brain.

Sorry for the confusion.