Jeep Grand Cherokee - Recent Questions, Troubleshooting & Support


does your car have DRL option (canada) daylight running lights?)
my answer will be, non export jeep. USA jeep, no one ever says !!!!
the tail lamps are not brake lamps.
they are independant.
there are many parking lamps , and the tails are that.
do all parking lamps fail>? see FSM page 8w50-2
the tails run directly to the park headlight switch pin, marked park.
which gets power from fuse 34
the same switch and pin runs all other park lamps and same fuse 34.
so if the fuse is good, then all lamps are burned out , nah.
or the switch is bad, and can due to so many lights for so long.
if lamps are not dim then here is no short, so must be an open
Fuse 34 tops list , use an ohmeter to test the fuse. or replace it
as , they can get hair line cracks. inside fues
0 ohms = good, infinity = bad fuse.

1997 Jeep Grand... | Answered on Oct 15, 2018


sounds like you should check your thermostat,head gskts. water pump. If it' overheated that many times you are probably looking at resurfacing heads if they are still good, and replacing head gaskets and waterpump etc, might be easier swapping egj. out

2004 Jeep Grand... | Answered on Oct 13, 2018


I would check the transmission fluid level and color, should be a nice clear red color. You may need to have the filter replaced. Possibly some internal transmission problem also.

2002 Jeep Grand... | Answered on Oct 09, 2018


Does it have headlights ? Clean battery terminals first, charge battery if needed, jump start it across the terminals of the starter with key on. Could be battery terminals needs cleaning, battery, or starter ?

Jeep Grand... | Answered on Sep 30, 2018


You need to pressure test the cooling system. Unless you had the heads magnafluxed or inspected very carefully, there could be minute cracks causing the problem.

This is the #1 problem with any engine where boiling takes place due to the expansion power that steam has the capability of producing.

The cylinder walls could also have cracks in them, there could also be a freeze plug that is leaking slightly, causing the engine to overheat as it can't build the proper pressure.

sometimes it's a better move to get a low mileage used motor, than to attempt to repair one that has high mileage and this type of suspected damage.

good luck

2000 Jeep Grand... | Answered on Sep 30, 2018


Since you have already changed everything that you have, I can not think of anything new that might cause your Jeep to overheat. Are you going by the meter in your vehicle or doing separate temperature measurements? I had a defective temperature gauge that caused me to chase my tail till I did separate measurements.

2000 Jeep Grand... | Answered on Sep 30, 2018


Are you sure the radiator fan is kicking on?

That vehicle has a known problem with fan relays....

2000 Jeep Grand... | Answered on Sep 30, 2018


first place I'd look is around the perimeter of the heads (I assume you mean head gaskets?) Make sure you haven't inadvertently gotten a wire pinched in between the head & block somewhere.

1994 Jeep Grand... | Answered on Sep 30, 2018


This sounds like it is your ignition module not sending message o your computer letting know that the key is in the ignition and the car has been started. Replace the ignition module

1995 Jeep Grand... | Answered on Sep 30, 2018


Hi.

If fuel pressure is low and you have already replaced the fuel pump, then the problem is usually the fuel pressure regulator. The pressure regulator is in same assembly with fuel filter. The assembly is located to the fuel tank, bolted to the truck's frame. The pressure is tested connecting a gauge like this : Set Sealey VSE952 to the port on the fuel rail. The pressure on Grand Cherokee must be around 49 psi plus or minus 5 psi. If engine runs but pressure is below 44.2 psi , check for a blockage in fuel supply line between fuel rail and fuel pump module (e.g.kinked line). If the line is not blocked, replace fuel pressure regulator and filter. Test pressure with and without fuel cap on.

Another test to be done is reading pressure, then shutting the engine off with the gauge connected. If pressure goes down too quick, then the regulator is defective. After 5 minutes the pressure should not go below 24 psi. If it does replace the regulator.

If regulator is OK check for leaks at the injectors that can cause fuel pressure drops.To check for injectors leakage clamp off the rubber hose of the pressure gauge tool between fuel rail and the port. If pressure staysr above 24 psi and before was dropping, then a fuel injector or the fuel rail is leaking.

Below a diagram representing the fuel rail and test port. The engines from same years like your six cylinder have the port and rail in the same position.


ginko_260.gif



Regards.

Ginko

1999 Jeep Grand... | Answered on Sep 30, 2018


Is it fuel injected or carb??? Try holding the gas pedal to the floor while turning the jeep over. This sometimes makes gas pump thru to the cylinders. Have you changed the fuel filter???? I know alot of jeeps have a fule filter with a bypass back to the tank, and sometimes the filter will be bypassing to the tank instead of the the motor. Check it out?????

1997 Jeep Grand... | Answered on Sep 30, 2018


The smell is way to much fuel in the exhaust and the catalytic converter is overwhelmed, it will overheat and quite possibly start the truck on fire if you don't fix the over fueling problem.

2000 Jeep Grand... | Answered on Sep 30, 2018


Have a voltmeter? stop guessing, use the meter. same time and $$$$
starter? but what are the symptoms. ?????? no start sure. but
1: dead starter (not a sound)?
2: solenoid on starter click?
3: dead solenoid?
4: some times starts if i wiggle A/T shift lever? PRNDL bad.?

my guess, is the relay was good. all a long ?
if the old relay was burned to a crisp in inside (did you look) then
the starter can be shorted. they can in fact short.

we use to simple and cheap tools, a voltmeter and ammeter
The key switch energizes the relay.
the relay has a coil. if the coil goes to 12v, (meter across coil)
then the relay is energized. (cranking)
if that works we look at the relay output. (solenoids can short too)
use the volt meter.
if the voltage at battery sags below 10v. the battery is bad. or the starter is shorted.
we use an ammeter to see that short.
100- 200 amps (no engine stated but is covered in the FSM)

here is a voltage plot.
if you watch current it it goes to 500amps and the solenoid just bangs
the starter is shorted.

test 1:
voltmeter to battery neg lug (black meter lead)
meter on 20vdc range (battery with meter there,,reads 12.6vdc.)
red lead to starter solenoid small wire, key line (sT) i call that.
I turn the key to ST position.
the solenoid ST pin (small) goes to what voltage. key held there.?
no wire pulled, this is a live test.
we do that first.

2006 Jeep Grand... | Answered on Sep 29, 2018


P0134....O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)


P0135....O2 Sensor Heater Circuit (Bank 1 Sensor 1) heater in the O2 sensor has packed up first sensor before the cat

Jeep Grand... | Answered on Sep 21, 2018


Most likely the dimmer switch. Loose connections from the harness connector to the switch can melt the connectors which would cause a poor connection and be the source of the flicker. You may be looking at a combination switch and wiring problem.

1997 Jeep Grand... | Answered on Sep 21, 2018

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