SOURCE: 2000 jeep grand cherokee limited starts in 3rd gear
oil pressure problem should be checked independently of other problems...Use a good accurate mechanical gauge to check. If pressure is good (no less than 15psi at idle hot (I prefer to see at least 20) check dash grounding, block ground and if OK, change sending unit. Dash and body ground can influence operation of shift and body control modules so indirectly your problem may or may not be related, depending upon what you find while testing. And it could turn out to be a defective module! They are expensive and just plugging new ones in may work, but then again, it might not. I might be totally incorrect on this...that's the value of actually being there instead of doing this by "remote control".
If you read the numerous posts pertaining to all vehicles, you will see that you are not alone with electrical problems...As long as the engineers who design this stuff, keep using "modules" to replace ordinary simple and reliable systems, we will continue to have these problems. Do some testing and I'm sure you will find a solution! (I'm still waiting for someone to make a program for a PC that will give a complete readout of every system in a vehicle, including exact faults instead of general system "suggestions")
Good luck
SOURCE: Very rough idle on 2002 Jeep Grand Cherokee Limited Edition V8
If you haven't changed the plugs or had the fuel system cleaned, now would be a good time to do it. The number 1 culprit for rough idles is dirty injectors or plugs. You can try an injector cleaner in a can (or bottle) for under $10 and see if it helps, and then work from there. If there isn't any improvement then if you are able to, check the plugs for any gunky buildup and if you find a bad plug, make sure you replace them all (or have them replaced) at the same time.
SOURCE: need a wiring diagram for 2002 jeep grand cherokee
Review this links:
- WJ Section 24 Heating Air Conditioning ewj24 (page 32 and next)
- WJ Section 08w Wiring Diagrams ewj8w
* page 19 Index
* page 221 Blower Motor - Diagram 8W-42
- Blower Motor Repair
I hope help you with this (rated this help) Good luck.
SOURCE: my heater will not get warm on my 2002 jeep grand
these jeeps are famous for bad actuator motors, these are small motors used to control the heater door, you may have a bad one that controls the hot and hot door, it may be stuck on cold. also make sure your coolant is full , i dont see any other problem that would cause this, a bad thermostat would give some heat, it may take a while but you would get heat,i would first check the coolant level then check the blend door operation to see if motor is bad. hope this helps.
Testimonial: "thank you i will try the door. thank you so much for your help. "
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