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Amedee
Amedee, Jeep Technician
Category: Jeep
Satisfied Customers: 26463
Experience:  ASE certified Technician advanced level specialist. Wisconsin certified emissions state inspector
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99 grand cherokee 4.0 liter. battery was dead and jumpers

Customer Question

99 grand cherokee 4.0 liter. battery was dead and jumpers were hooked up backwards. replaced battery and now engine cranks but wont start.
Submitted: 2 years ago.
Category: Jeep
Expert:  Amedee replied 2 years ago.

Hello! This is caused by a blown fuse. Maybe several fuses. It could be any of the fuses under the hood or inside the vehicle.

Customer: replied 2 years ago.
fuses all good
Customer: replied 2 years ago.
is there fuseable links?
Expert:  Amedee replied 2 years ago.

Ok, good, check to see if the engine is missing spark or fuel.

Customer: replied 2 years ago.
not at car now. wanted to figure out a plan on what to check tomorrow
Expert:  Amedee replied 2 years ago.

Ok, the plan would be to check for spark and fuel. Also, check to see if the computer is awake with the key on.

Customer: replied 2 years ago.
how do i see if its awake? plug in scan tool?
Expert:  Amedee replied 2 years ago.

That or check for 5 volts at the TPS with the key on.

Customer: replied 2 years ago.
ok thanks i let u know what happens
Expert:  Amedee replied 2 years ago.

ok

Customer: replied 2 years ago.
went to check out car yesterday. when ignition is turned on cooling fan comes on and keeps running. key light on dash goes off and turns back on and stays on and also alot of relays in power center are buzzing
Expert:  Amedee replied 2 years ago.

Does the TPS have 5 volts going to it with the key on?

Customer: replied 2 years ago.
its being towed here today.
Expert:  Amedee replied 2 years ago.

ok let me know!

Customer: replied 2 years ago.
4.54 volts at tps. plugged scan tool and says serial link external failure
Customer: replied 2 years ago.
buddies car he replaced pcm from junk yard yesterday. had pin# ***** my scan tool said it successfully programmed it.
Customer: replied 2 years ago.
asd relay buzzing
Expert:  Amedee replied 2 years ago.

How can the PCM be programmed if there's no communication?

Customer: replied 2 years ago.
it gave me correct vin# ***** said it was sucessfull in programming. it lets me read and erase codes
Customer: replied 2 years ago.
tried to reset skim and says no communication
Customer: replied 2 years ago.
s***** *****ght is on
Customer: replied 2 years ago.
fuel gauge not working and volt meter not working also
Expert:  Amedee replied 2 years ago.

You might just have a badskim module

Expert:  Amedee replied 2 years ago.

Skim module

Customer: replied 2 years ago.
where is it located and what does it look like?
Expert:  Amedee replied 2 years ago.

I will send you a picture when I get off work

Customer: replied 2 years ago.
thanks
Expert:  Amedee replied 2 years ago.

Here is a picture.