I have a 95 jeep cherokee, straight 6 cyl. engine, 4 speed auto trans, AC, 2 WD , with car alarm (viper 100, i bought it used this way) What it does is stall unexpectedly. It can stall
3 times a day or not at all for a 100 miles. Ignition power is totally gone. sometimes it also "twitches". ignition interrupts briefly (less than a second) and if you`re still rolling and the trans still in gear it will go on just fine. Other times you have to restart the engine.
sometimes it will restart right away, sometimes it will crank but not ignite for up to 20 min. , sometimes it wont even crank (turn over). I have visually checked all the wiring i can get to, I have tugged on wire harnesses, i have shaken the car while running, drove over bumpy roads to try to make it fail, I have checked all sensors one can check with ohmmeter.I sent the computer in to test, it tested fine. There is no difference in going uphill, hot day, cold day, cant find a character situation it breaks down in. what troubles my brain is the different fail symptoms in trying to restart it, sometimes it wont crank over for hours, then suddenly everything works fine. I`ve disconnected the car alarm, even though there is what looks like a factory anti theft installed also.
I`ve had it diagnosed at an automotive shop, it didnt fail for the day they had it, so no results.
I am currently clueless, any help will be greatly appreciated
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