Its blinking " brakes, ABS, and check engine" and makes a clicking sound when i try to start it, i have checked all the fluids in the car as well and they're all fine, but it still won't start?
First I suggest scanned the ECU in order to know what fault codes is stored there. HERE procedure.
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SOURCE: 1999 jeep grand cherokee / 4.0 L.
I had a skim module go out in mine in the ignition, and I have a 2001. It's a 100 part, and now it starts fine.
SOURCE: Starting Problem with 1994 Jeep Grand Cherokee
Assuming I understand your problem correctly, it sounds as if the car will only start once the check engine light comes on. The check engine light is controlled by the PCM (powertrain control module; or computer) which is also responsible for basically all engine operations including fuel delivery, ignition, emissions, and so on. If this light is not coming on, it means that the computer is not getting power. If the computer is not getting power then it won't start. The fact that you hear the relays click on when the light comes on is another indicator the the computer is not getting power as it also supplies power to the ASD (Automatic Shutdown Relay) which in turn supplies the power to the fuel and ignition systems. Check the ASD relay located in the power distribution center, if it is the same relay number as another un-important system, then swap it out to see if that helps. Make sure the plugs going into the computer are tight. The delay in the power going to the PCM sounds like a stuck relay, have someone tap the relays when the light is off to see if comes on. It is also possible that the PCM itself is failing.
SOURCE: 2001 Jeep Grand Cherokee code P1391
I would check to be sure that the timing chain hasn't jumped at all ..
SOURCE: 94 jeep grand cherokee laredo v8 5.2l automatic.
You can check fluid level by removing the rubber plug in the cover. Fluid is full when on level ground, it is just at the edge of the hole (or very close) if you are already getting noises out of there, you can remove the cover and inspect gears for wear or breakage. If you find a large amount of metal debris in the lube it tells you something bad is going on back there. Although rebuildable, it's not a home job...requires exact settings in order to operate properly. You can find good units far cheaper than even a gearset costs in any scrapyard. to match ratio, count the teeth on the ring gear and the pinion gear. the replacement MUST have the exact same number. Before swapping diffs, check all back there to make sure noise is not from somewhere else.
SOURCE: 2003 Jeep Grand Cherokee check engine light stays
go to autozone they will check codes for free
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