Turn the key from the off position to the run position(not all the way to start) when the system makes one beep turn it back to off. repeat three times. this will reset the obd II computer. if you do this correctly the odometer will read some words like reset or something
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Base (initial) ignition timing is NOT adjustable. Do not attempt to adjust ignition timing by rotating the distributor. All ignition timing functions are controlled by the Powertrain Control Module.Adjusting the timing on a Jeep Grand Cherokee requires special tools and an understanding of engine mechanics. Changing the timing on a Jeep Grand Cherokee with distributor-less ignition requires professional reprogramming of the powertrain control module. This guide covers Jeep Grand Cherokee models with distributed ignition only. you can go to this site and it will explain it. www.ehow.com/how_4521340_adjust-timing-jeep have a good day !!
ok look at your fuel filter .. see that hose that runs from that to your engine???? and next to that is another hose ???? that doesnt connect to the filter but leads away from your engine ?? that your return line..
All modern cars have this generic info light. You have several options:
1) Free (sort of) most oil change places can check it.
2) Buy your own OBDII scanner, about $100 bucks, works for all '96 and newer cars. Gives peace of mind that YOU know what is wrong even if you can't fix it.
3) Take to mechanic and hope they are honest and don't take you to cleaners.
Generally this light is tied to the emissions systems. Your car won't pass a smog check but it may run just fine. If you are capable check all your fluids especially the oil. Good luck.
If it was overheating at freeway speed then it is a clogged radiator. Another cause of overheating is a timing that is retarded. These can be caused by worn timing components etc, although a possiblity it is highly unlikely on your car.
hello rich if you dont own a obd2 code tester then you can take your jeep to any auto parts store like auto zone and thay will use there tester for free and tell you what the faults are on your jeep and how to fix it and if its a sensor or what ever there also have the parts you'll need to replace.thay also sale the testers if you want to buy one for future use thay can run any were from 60.00$ -150.00$ but i just have them use theres for free to check my car.