why my jeep grand cherokee 2000 turned of when am going to slow down or to stop , and it turned on when i start it again , i changed the fuel filter and i cleaned up the idle sensor i changed the coil and the 6 sparks but it seems that doesn't work . i but it on the scanner but no fault codes were stated any help please???

Asked by May 12, 2016 at 07:35 AM about the 2000 Jeep Grand Cherokee Laredo

Question type: Maintenance & Repair

why my jeep grand cherokee 2000 turned of when am going to slow down or to
stop , and it turned on when i start it again , i changed the fuel filter and i
cleaned up the idle sensor i changed the coil and the 6 sparks but it seems
that doesn't work . i but it on the scanner but no fault codes were stated any
help please???

4 Answers

5

Try checking your leads on your battery. This can always be a simple cause to your problem. I know Jeeps have been known to have wiring issues with this.

i checked the leads and everything was good , but i m still facing the same problem

5

Like I said it may be wiring. Just a bad wire maybe. There are many possibilities but if u have a full brand new battery it should at least start up if it was the alternator but maybe not.

Hi- had the same issue with my 2000, In my case, it would happen at various times and driving conditions. It drove me insane because it would be fine for weeks and then act up again. For me, it was a well hidden,corroded coolant temperature sensor that was the root of the issue. When the sensor was failing, it shorted the ecu's low( 5v) reference voltage system. When the reference voltage couldn't be properly read by the ecu - it shut everything down. Scan tools were of no use, because when the fault or short was active, the scanner could not communicate with the ecu either. If the fault was not active, it left no trace or memory of the incident. It was as if the ecu had a seizure. Seems like the higher engine rpm may have made a little extra voltage available to the system, keeping it running. Once at idle ( traffic light /stop sign) it would shut down. Point being - look for a faulty sensor, shorting sensor wire, or poor grounding. I went crazy trying to find my short, till one evening I happened to notice my temperature gauge bouncing around - jumping way too fast to be a coolant issue. Happy hunting.

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