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Unread 08-27-2013, 12:33 AM   #1
TheAron67
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Is there a way to test a fuel pump?

Is there any way to test if a fuel pump is bad/weak without taking it to a shop? 1996 Grand Cherokee Laredo 4.0

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Unread 08-27-2013, 06:10 AM   #2
cruiser54
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Go to one of the big box parts stores and they loan out fuel pressure gauges.
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Unread 08-27-2013, 03:05 PM   #3
uberxj92
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You should hear it when you turn the key on.
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Unread 08-27-2013, 03:41 PM   #4
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Quote:
Originally Posted by uberxj92 View Post
You should hear it when you turn the key on.
How does that tell the OP whether his pump is bad or weak?
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Originally Posted by chris87xj View Post
If you own a Renix Jeep, you'll want to check this out. >

An index to over 25 write-ups can be found in Post #1.

Cruiser's Mostly Renix Tips
My Jeep Technical Photos

http://www.cherokeeforum.com/g/album/1725214
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Unread 08-27-2013, 07:34 PM   #5
uberxj92
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Sorry I usually go in steps. Like power to pump. Filter. Then test pressure. Was trained by my dad he has had machine shops in Florida for years. Lolhe can put his hand on a vehicle and tell you what's wrong. Lol no computers. Wish I could do that
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Unread 08-27-2013, 09:07 PM   #6
cruiser54
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Quote:
Originally Posted by uberxj92 View Post
Sorry I usually go in steps. Like power to pump. Filter. Then test pressure. Was trained by my dad he has had machine shops in Florida for years. Lolhe can put his hand on a vehicle and tell you what's wrong. Lol no computers. Wish I could do that
So we're back to post #2.
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Originally Posted by chris87xj View Post
If you own a Renix Jeep, you'll want to check this out. >

An index to over 25 write-ups can be found in Post #1.

Cruiser's Mostly Renix Tips
My Jeep Technical Photos

http://www.cherokeeforum.com/g/album/1725214
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Unread 08-27-2013, 09:55 PM   #7
uberxj92
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Well I guess you're right. Lots of fighting on this forum lol.
Good luck with your jeep I know how much it sucks when they're down.
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Unread 08-28-2013, 12:39 AM   #8
TheAron67
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What should the fuel pressure be? And whats "OP"?
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Unread 08-28-2013, 06:01 AM   #9
cruiser54
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Quote:
Originally Posted by TheAron67 View Post
What should the fuel pressure be? And whats "OP"?
OP is Original Poster.

I don't know for sure what the specs are on a Grand Cherokee.

Hopefully, someone ho knows them for sure wil chime in.
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Originally Posted by chris87xj View Post
If you own a Renix Jeep, you'll want to check this out. >

An index to over 25 write-ups can be found in Post #1.

Cruiser's Mostly Renix Tips
My Jeep Technical Photos

http://www.cherokeeforum.com/g/album/1725214
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Unread 08-28-2013, 07:21 AM   #10
uberxj92
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49 psi +/- 5
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