Question about 2000 Jeep Grand Cherokee

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1999 jeep grand cherokee.uses alot of gas idals bad.new fuel filter.blowing black smoke.hit the gas.and it will get away from you...need help...

I put a new fuel filter on.new cam/speed sin.runs bad.but will run.hit the gas.and it will get away from you.blowing.alot of black smoke like alot of fuel being brunt.need help.wifes jeep.

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  • Jeep Expert
  • 150 Answers

Can be a bad O2 sensor. Check with a scanner which shows live data the 1-1 and 2-1 (upstream) sensors. Good sensors show a rapidly fluctuating voltage from 0.2 to 0.8 V. When the sensor has a steady voltage, then its most probably bad. There is no check engine light and no fault codes set?

Posted on Feb 03, 2015

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6ya6ya
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Posted on Jan 02, 2017

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

MrScary66613
  • 1990 Answers

SOURCE: 1999 Jeep Grand Cherokee Heat not working

Change your Thermostat.

Posted on Jan 17, 2009

  • 118 Answers

SOURCE: How can I reset my Factory Alarm on my Jeep it wont run

Alarm Module Reset Procedure
NOTE: This information applies to a Vehicle Theft Security System (VTSS) that was armed when the battery was disconnected and reconnected.
When the armed VTSS senses that the battery has been disconnected and reconnected, it enters its power-up mode. In the power-up mode the alarm system remains armed following a battery failure or disconnect. If the VTSS was armed prior to a battery disconnect or failure, the system will have to be actively or passively disarmed following a battery reconnection.
The power-up mode will also apply if the battery goes dead while the system is armed and battery jump-starting is attempted. The engine no-run feature will prevent the engine from starting until the alarm system has been actively or passively disarmed.
Passive disarming of the Vehicle Theft Security System (VTSS) occurs when the vehicle is unlocked using the key to unlock either front door or the lift gate. Active disarming of the VTSS occurs when the vehicle is unlocked by depressing the Unlock button of the Remote Keyless Entry (RKE) transmitter.
Once the alarm has been activated (horn sounding, lights flashing, and the engine no-run feature), either disarming method will deactivate the alarm.
Depressing the Panic button (if equipped) on the RKE transmitter will also disarm the VTSS, but the horn will sound and the lights will flash for about three minutes as part of the Panic feature. The horn and lights can be stopped by pressing any of the RKE transmitter's buttons or driving the vehicle above 15 mph.

Posted on Jan 28, 2009

  • 272 Answers

SOURCE: Black exhaust smoke from Jeep Cherokee 2.5 CRD

The smoke and the the bogging down are due to either too much fuel flow or to too little airflow. Your engine is flooding and running way to rich hence the low fuel mileage. Could be a faulty pump with too high pressure, bad or wrong sized injectors, (assuming they actually fixed the sensor problem) or airflow restriction,

Posted on May 08, 2009

  • 58 Answers

SOURCE: My jeep grand cherokee is smoking really bad.

Black smoke is too much fuel. Bad spark plug, or plugs, bad spark plug wire or wires, bad injector, allow engine to cool, pull the spark plugs. does one look bad? Replace one or all. Plug wires don't last forever. An injector can stick open an pass too much gas :)

Posted on Jun 06, 2009

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1 Answer

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Sounds like pluged air filter or the air vent going to your trottle is blocked. you dont have enough air.going in the intake.

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Hello,

There are 2 filters.
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  2. The second is in-line, above the front edge of the gas tank, inboard of the frame member. It is part of the fuel regulator/filter assembly.

Here's a diagram:
http://www.wjjeeps.com/misc/fuel_filter_wj.jpg

Take care.

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Our jeep grand cherokee has been sitting for a year and we recently installed a new battery. it cranks, but will not keep going. it has at least 4 gals. of gas in it. also, alot of white smoke blowing...


Hello
I would check the fuel pump relay
it is,,Right behind the battery under the hood. Pull off the black cover with two turn clips and it should be the second relay if you're looking at the car.

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Mar 05, 2010 | 1997 Jeep Grand Cherokee

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Were is the fuel pump on a 99 jeep grand cherokee, and is it hard to replace?


You will not like my answer.

The fuel pump is inside the gas tank.

You will need to drain the tank and drop the tank to gain access to the fuel pump via the top of the gas tank.

Mark sure your new fuel pump has a new screen/sock filter.

Change filter filter at the same time!

Jul 15, 2009 | 1999 Jeep Cherokee

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My 1990 jeep cheerokee oil smells like theres gas in it


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My jeep grand cherokee is smoking really bad. Black smoke and it also skips. What might this be?


Black smoke is too much fuel. Bad spark plug, or plugs, bad spark plug wire or wires, bad injector, allow engine to cool, pull the spark plugs. does one look bad? Replace one or all. Plug wires don't last forever. An injector can stick open an pass too much gas :)

Jun 06, 2009 | 1998 Jeep Grand Cherokee

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Black exhaust smoke from Jeep Cherokee 2.5 CRD


The smoke and the the bogging down are due to either too much fuel flow or to too little airflow. Your engine is flooding and running way to rich hence the low fuel mileage. Could be a faulty pump with too high pressure, bad or wrong sized injectors, (assuming they actually fixed the sensor problem) or airflow restriction,

May 08, 2009 | 2001 Jeep Cherokee

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there are alot of things that cause this same issue.

Feb 07, 2009 | 1994 Jeep Grand Cherokee

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