I have a 1988 Jeep Cherokee 4.0. Motor replaced three years ago, but I have had this problem the whole time. It sometimes cranks and sometimes doesn't. If it wont crank, I can sometimes crank it with a little ether, other times it won't crank at all. I took it to the dealer a while back, and was told to replace the throttle position sensor. didn't work. injectors are good, always have fuel coming through, spark is good, coil is good. Tried cleaning out the throttle body intake really good. I have no clue what else to do. It will turn over but will not crank every time. It also can turn off if I slow down to turn or stop.
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Re: Jeep Cherokee won't start, turns off, etc.
Did you have the same cranking with no start problem with original engine or did the problem begin when you changed it? I would check codes if you have not already, and would also clean business end of idle air valve (next to tps) DO NOT turn the end plunger while cleaning or it may not seat properly. Do not loose the rubber "o" ring while working either!
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Not sure if I read your post right, but you have to have a hot wire to the ignition switch from the battery, independent of anything else on the car, before the switch will work. The CPS is a common problem on the jeeps, though. If bad, you may not get a coil signal.
That happen to me 3 days ago. The problem is on the ignition key. When you turn it to start the engine, once the engine starts, turn it back a little. is suppose to get back by itself but, get stuck because the cold weather.
Brakes are products that wear with time. Not avoidable.
Window motors or any other electrical item could stop working from the first day of replacement.
I don't remember any thermostat code working at the dealer.
I have been a Jeep person for 20 years. I love them.
when a cherokee have trouble starting i always go to the crank sensor first it on top of trasmission you crank the motor on the fly wheel you have accumulation of rust and before the crank sensor notice the engine turning it take a long time me i remove the crank sen sor visualy check if it crank i change it and i used some abrasiv sand paper or something like that i ask somebody to crank the engine i put the sand paper in the hole of crank sensor when the engine turn sand paper clean the flyweel be carefull for our finger after install the sensor and try it out good luck pierre