Question about Jeep Wrangler

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Fuel pump relay fuse

I have a 92 wrangler 4.0 motor. Would not start. I could not hear the fuel pump cone on. I hit the tank with a hammer with the key on and I heard the pump start. So I had the pump replaced. The next day would not start, same thing as the first but hitting the tank did nothing this time. So the mechanic replaced the fuel pump relay and the rollover relay. I drove it home and went to start it and agin no start or fuel pump noise. I think the new pump is defective or bad connection, So I need help !!

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  • Ron Stephens Oct 12, 2013

    Apparently the wire connection under the plate or socket where the relays plug in were not making contact good enough to keep a constant connection. This was discovered and repaired, so far no more problems.

  • Ron Stephens Oct 12, 2013

    Not always is your problem two fold but it can be. So be diligent !

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  • Jeep Expert
  • 652 Answers

Check the asd relay and computer out puts make sure they are working

Posted on Nov 01, 2013

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4 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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alicantecoli
  • 22219 Answers

SOURCE: 1999 GMC Jimmy won't start.

firstly where is fuel pump relay as i have never seen a GMC jimmy sorry about that but have you ever seen a foden ?? well the first thing is to check the fuse,if fuse is ok which can be checked by looking at it as its transparent or a piece of wire with a light bulb .across the battery.to find the relay is easy if you dont know where it is,When this piece of americana decides to work just turn ignition on and listen for the click of relay ,then when it doesnt start listen for click again or rather an absence of a click,sounds more like a dodgy pump in the tank or the connections going to it.when it wont start try thumping the fuel tank with the ignition on and if it is a sticky pump you might hear it start then at least you will know where the fault is.Another fault that i have come across with relays is that where the relay is passing a heavy load then its possibe for the contacts to burn inside the relay.When this happens then if it is possible to seperate the relay cover and clean the contacts with a points file (remember them ) or a piece of fine emery paper if the cover breaks taking it apart then use a bit of black insulating tape to repair the cover.Thats assuming the pump is in the tank and not bolted to the chassis near the fuel tank but that design with external pump i havent seen on a europeon car for nearly 20yrs .

Posted on Nov 05, 2008

DAD5bbbbg
  • 111 Answers

SOURCE: 2000 Pontiac Sunfire Fuel pump not working

check and see if you have an emergency shut off in the trunk. it will be on either side of the finder wall. it is there in case you get in a accident. the button pops up. make sure the button is in all the way. that shut off might be your problem.

Posted on Mar 02, 2009

  • 10 Answers

SOURCE: 2007 Jeep Wrangler Unlimited Crank-No Start. Replaced FP.

Hey Tim take a look at this, will this help ?
SUBJECT:
No Engine Crank Or No Engine Start Due To Electronic Lockup Of The WCM / SKREEM
OVERVIEW:
This bulletin involves the replacement of the Wireless Control Module (WCM), and if
equipped, the replacement of the Electric Steering Column Lock (ELV). The WCM is also
referred to as the Sentry Key Remote Entry Module (SKREEM).
MODELS:
2007
SYMPTOM/CONDITION:
The customer will experience a no engine crank AND a no engine start condition. Also, the
remote keyless entry (RKE) system will not operate. This condition may be due to an
electrostatic discharge (ESD) from the ignition key into the Wireless Control Module
(WCM), causing the WCM to electronically lockup. This condition may occur more
frequently in dry and/or cold weather conditions where a sufficient electrostatic charge is
more easily produced. This condition is corrected by the replacement of the WCM
DIAGNOSIS:
1. With the condition present (i.e. the vehicle in the no crank / no start condition), connect
the StarSCAN® scan tool to the vehicle.
2. Turn the ignition switch to the “ON” position, and power up the StarSCAN®.
3. If the WCM is electronically locked up, the StarSCAN® will display the WCM as being
“off bus”.
4. If the no crank / no start condition is present, and the WCM is “off bus”, then reset the
WCM by temporarily removing the IOD fuse (with the key out of the ignition switch),
wait for 10 seconds and then reinstall the IOD fuse.
5. With the IOD fuse reset having been performed, verify that the vehicle will now crank,
start, and run.
6. If the condition is temporarily corrected by performing the above steps, and if the part
number of the WCM is earlier than the part number of the WCM listed in the part
reference table in the Service Bulletin Parts Required Section below, then perform the
Repair Procedure.

Posted on Jun 24, 2009

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