fuel pump.....

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Sep 20, 2009 | 07:51 PM

Cdy1

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Joined: Aug 2008

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fuel pump.....

on my 95. it just started doing this.. when i turn the key it wont prime and the code is 542.. secondary circut fault... if i hit the tank where the pump is it works... any ideas??

Sep 20, 2009 | 08:02 PM

muscletruck7379

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Joined: Apr 2003

Posts: 2,703

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From: Harrisburg, NE

sounds like a bad connection, time to start inspecting wiring and connectors...

Sep 20, 2009 | 11:49 PM

g_k50

Cargo Master

Joined: May 2004

Posts: 3,007

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The connection at the fuel pump/tank is dirty/loose. WD-40 on the electrical connection and secure by hand. Picture of connection is shown in MyGarage, DonKo, the picture with the hammer.

Sep 21, 2009 | 01:29 AM

aurgathor

Cargo Master

Joined: Aug 2004

Posts: 2,899

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From: Lynnwood, WA

How many miles are on the fuel pump?

I had 2 failures, one around 150k (end of life wearout) and one around 230k where an internal connection get corroded. Both required a tow, and I was lucky enough that neither failure happened more than 10 miles away from my home.

Sep 21, 2009 | 12:42 PM

Cdy1

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it has about 170k on it and i just ran the test again and its showing primary and secondary fualts... need a pump??

Sep 21, 2009 | 08:10 PM

greystreak92

Lead Driver

Joined: Sep 2002

Posts: 9,182

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From: Gateway to the West

Check the FP relay first. Primary circuit is the one that triggers the relay. Secondary is the one to the pump.

Sep 22, 2009 | 12:41 AM

Cdy1

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i did, i replaced the primary relay

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Sep 23, 2009 | 06:45 AM

RunNRhino

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Sounds like we're having related problems. The FP has been replaced and still does not prime - You can see the whole story inone of my two threads on the subject. I assume you already checked the inertia switch. I'm now to the point that I'm trying to figure out what is blowing the FP relay fuse. One of my son's friend (who put in the FP) believes something is shorting it out by grounding. This may be true since the battery is now dead - but that could also have been from when the were working on it and left door and the hood open for two days.