1996 jeep grand cherokee laredo that won't start?

Question

someone please help me. i have a 1996 jeep grand cherkee laredo. i have had the transmission rebuilt,changed the dis cap,rotor button,crank sensor,ignition coil,and a new computer. it ran for about 300 miles. it just cut off as i was driving down the road. i had clicked the button to take it out of over drive as i was climbing a incline on the hiway.now wont start. it turns over like it wonts to but wont. it has blown a fuse in the box under the hood.it is fuse 20. it is a 20amp. when i changed it it blows as soon as i turn the key.i am at wits end. can someone please help me

Answer 1

Sounds to me like a wiring problem somewhere

Answer 2

sounds like maybe the fuel pump.but whoever done all that work should be willing to look at it for free in case the controller you bought is bad. does it crank and not start or does it do nothing at all? i think you should hear the fuel pump kick in when you start the car. an old tech trick is to have someone hit on the gas tank where the fuel pump is while someone tries to crank it. if its the fuel pump it may start then you will know for sure if its the pump. and a bad fuel pump will short the fuse if that's what the fuse is, you need to find out which fuse is blowing



it may have a short in the ecm or pcm harness or broken wire . it could have spiked and taken out the controller. that fuse dont read the fuel pump ( i think)

Answer 3

DO NOT PULL OFF THE FUEL PIPE AND CRANK THE ENGINE!! NO NEVER DO NOT DO THAT!! VERY DAMGEROUS!! It will spray fuel everywhere due to electric pump!

What does the 20 AMP fuse go to? What does it say it goes to. Find that and trace wiring. If part of transmission, perhaps damaged that took a while to wear through.

FYI. If you wanted to check the fuel, install a pressure gauge on the Test port on the fuel rail.

Good Luck

Answer 4

A fair amount of Cherokees of this vintage have the very problem you are describing here. Usually it's a failure in the windshield seal. Fortunately it is also usually an easy and inexpensive fix. Take a run down to your local auto glass shop and have them check it out. A simple reseal will solve the problem in most cases.

Answer 5

my jeep did the same thing turned out to be the sensor on the exhaust pipe under the passebger side door it was shorting on the heat pad under that side passenger

Answer 6

you have a direct short in your wiring or a problem with your new computer I would go buy a obd reader they are about $50 available at most parts stores and should tell you the problem other than that a mechanic good luck.

Answer 7

sounds like a fuel problem, is the fuel filter ok? check fuel pump also, pull the fuel pipe off the engine and get someone to turn the engine over with the key and see if you get fuel