Question about Jeep Grand Cherokee

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Hit a hard pothole with 2003 Jeep grand cherokee laredo. Immediately stopped. Fuel pump inertia switch?

Wondering if hitting the hard pothole tripped an inertia switch for the fuel pump?

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Never heard of this switch in the fuelpump circuit. Remove the fuel cap and listen if you can hear the pump when you switch ignition on. The pump will run for 3 seconds when you don't start. Hitting the pothole can have dislodged many things, from relays and connectors to a line.

Posted on May 16, 2014

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Posted on Jan 02, 2017

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SOURCE: 1993 JEEP GRAND CHEROKEE LAREDO- TRUCK WONT

OK...I have a 93 outside...one diagram I have shows an ignition module next to coil...but there is none on mine, (4.0 engine)
Two items to check are crank sensor and cam sensor inside distributor. Test procedure can be found in just about any manual including haynes.
You will need a decent volt/ohm meter to do testing. You can also check codes by turning ignition switch on/off three times, leaving it on the third time. Check engine will flash code #'s (ex: one flash, pause two flashes= the number twelve.then followed by a longer pause then another set of flashes etc.)

Posted on Mar 05, 2009

fyrebyrd1
  • 121 Answers

SOURCE: diagram to remove and install a fuel pump on 1999 jeep grand cherokee laredo

I apologize for not being able to provide a diagram, and it's been a while since I've replaced a fuel pump in a Jeep like yours, however the fuel pump for that vehicle is located within the fuel tank. You will typically disconnect power from the battery,relieve the pressure from the fuel rail to the injectors. In most cases the test port on the fuel rail has a schrader valve "valve core" like a tire valve, which utilizing a rag to absorb excess fuel you can depress to relieve pressure. You will then have to detach the fuel filler tube and vent tube at the filler neck. With a floor jack supporting the tank ,there should be a couple of bolts holding either two straps around the tank or a large cover that covers and supports the tank itself ,that will need removal. Once you have removed these and you should be able to access the top of the tank. Bear in mind you don't put the fuel pump/sending unit wiring harness or the fuel and vent tubing under too much strain as you lower the tank. you should have enough room to disconnect this wiring and fuel tubing. the tubing will probably have a quick disconnect setup where it attaches to the pump assembly. Once you have the tank on the ground take a suitable (non sparking drift and hammer) to tap the retaining ring that holds the pump in the tank, around the openig to release it. The pump assembly will be spring loaded and the top may pop up out of the tank. Just be sure to protect yourself from any fuel that might spray up. To reinstall can be a slight chore sometimes, as the assembly is spring loaded. It usually goes in with just a slight amount of effort though. Remember to replace the fuel sock on the pump and o-ring seal around the top of the opening. You can purchase just the electric pump, but I'd recommend replacing the whole fuel pump assembly. It will cost more in parts, but longer part warranty and lesser chance of further damaging the assembly are the benefits. Naturally installation is the reverse of removal. I'd recommend a new fuel filter as well, or shortly thereafter. Chrysler factory replacement units recommend draining all the old fuel from the tank and replacing with new fuel (never done that, and with the price of gas, probably won't start) I have never seen an adverse effect from not doing so. I hope this posting has helped.

Posted on Nov 13, 2008

  • 3 Answers

SOURCE: 1997 Jeep Grand Cherokee 4.0L Fuel Pump Location

in the gas tank

Posted on Jan 17, 2009

  • 51 Answers

SOURCE: having a hard time removing the fuel filter.

get a press fit tool for gas line that removes the line .Mak sure you release the pressure in the line first .which is under the hood on the feul rail looks like a valve stem on a tire .watch your eyes when releasing pressure fuel well spray out hold a rag over it .there are different size tools to release the clips on the fuel filter make sure you get the right size .you can buy the all 5 of them fairly cheap all for under $20

Posted on Feb 16, 2009

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SOURCE: 1993 JEEP GRAND CHEROKEE LAREDO IM TOTALLY BAFFLED

Back up a minute...Do you have spark from the coil wire? (juice from coil) If so, change or check rotor and cap (wires do not all go bad at same time so unless they are wet, likely at least good enough to start engine)

Posted on Mar 05, 2009

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1 Answer

While driving 2001 grand Jeep cherokee laredo it started sputtering and stopped as if out of gas( it was not) and the check engine light came on. I'm thinking fuel filter or pump?


When they sputter it is mostly the fuel pump. One way to check is hit the bottom of the tank in the center. The vibration will jar the pump and most times they will start pumping again. This is not a fix, you still have to replace the pump. This is just an easy way to make sure your changing the right part.

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I was in a wreck where i was hit on the drivers side passenger door. Now car not getting gas. I have a 2002 jeep grand cherokee. I was told about an auto shut off and I need to resset it. Any ideas?


check to see if when u turn the key on if you can hear the fuel pump kick on (dont try to start) if u can hear the pump turn on its not the fuel shut off, if the pump is turning on i would check the fuel line to make sure they are not damaged or kinked and the fuel filter housing, also on the top of the motor where the fuel line come up to the motor there is a fitting under a cap that looks just like the valve on your tires turn your key on and u can push the center of that valve down and if u have presure it will sprey fuel be careful. hope this helps

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Hit pothole and my 1999 jeep cherokee sport shut down now it won't start replaced brain but it still won't start doesn't sound like it's getting any spark can you help?


check to see if your getting fuel. you might have tripped the collision shut off for the fuel pump. If your getting fuel then check the wires going to the coil packs

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1999 jeep grand cherokee laredo. transmission floor shifter button to engage and disengage hard to push in. now stopped being able to push in at all


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1995 jeep grand cherokee laredo. Gets the death wobbles when going 50 or faster and hit a bump. Have to hit the brakes to make it stop.


Front shocks/struts may be shot...not dampening the blows from the street.
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Also check alignment if it's only when you hit a chuck hole.

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My 95 Jeep Grand Cherokee Laredo will not start.


cj2176 is correct, we need a lttle more info. Sounds like it will need a new fuel pump or something related to it. Since it starts on starting fluid it has compression and air and spark, just no fuel. Fuel pumps can just stop working while driving, and if not working obviously will not start. No caodes will be set for a fuel pump not working. If it cranks but does not start have someone pound on the bottom of the fuel tank with a fist or small rubber mallet lightly (don't damage the tamk) while your cranking the engine. If it starts, the fuel pump module in the tank is bad.

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