Question about Jeep Cars & Trucks
Hi, i own a 1999 xj jeep cherokee auto 4 litre and what i believe is the engine imobilizer light came on one morning as i tried to start it to go to work, i cannot start it even though the engine turns over and none of the jeep dealers in the south queensland area want to touch it as it's duel fuel. it was running perfectly the night before the morning it stopped working, it is a very nice vehicle and an engine swap is looking like the only way to bypass the imobilizer and computer , i like the features that the car has got and really don't want to have to that avenue if possible. any sujestions would be greatly appreciated, thank, bryan.
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Posted on Jan 02, 2017
I'd suggest the ignition control module, however I'd have a certified mechanic check it out just in case...
Posted on Feb 01, 2009
P0303 Cylinder 3 mis-fire Possible causes misfire does not return,defective Camshaft Position (cmp)or CKP sensor,vacuum leak,defective ignition system.
Posted on Dec 12, 2009
This is usually how it happens with Electric Fuel pumps. They either work or they don't. When you turn the ignition to on you should hear the pump engage and pressure up. If you don't most likely your pump is faulty. You mentioned that it did this after a freeze. It is possible that you have a frozen fuel line, Supply or return, will also cause this problem. The best you could do is move the vehicle into a garage and warm it up above freezing to allow the lines to thaw. A lot of time we get moisture build up in a tank without even knowing it. Cold fuel is supplied to the motor through the pump but the return line returns warm fuel and in a cold environment this will or can cause condensation to form in the tank and lines. Also bad fuel from a station will cause this issue. It doesn't take much with all the additives they put in fuel today. They sell fuel additive that will remove this moisture if that is the problem. try warming the vehicle up and thawing the lines. If this proves to be the issue you'll need to drop and drain the tank and lines to clear the problem or try a fuel additive to remove the moisture.
Posted on Jan 21, 2010
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