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96 Jeep Cherokee won't start in wet weather
02-03-2011, 03:08 PM
Post: #1
MyBB 96 Jeep Cherokee won't start in wet weather
My 96 Jeep 4.0 cranks but will not start in cold wet weather. After I use a hair dryer on the distributor & plug wiring it starts right up, but runs rough for a while afterwards. Should I replace distributor cap, rotor, plug wire(s), all of thhe above, or is it something else??
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02-03-2011, 09:48 PM
Post: #2
RE: 96 Jeep Cherokee won't start in wet weather
I'm thinking that a lot of that decision would depend on how much you want to spend, how much you like to tinker, and how many miles you have since your last tune up. The problem is most likely the cap collecting condensation and while you have it off it's a good idea to change the rotor. Changing those two things and trying it would tell you if that was indeed the problem or not. If you have a lot of miles on since your last tune up & you aren't strapped for the money, wires, plugs, a gas filter, and an air filter added to the list would give you a good tune up. You may even want to put it on a scanner to check for codes and then have the computer cleared. If you do get codes please record the NUMBERS and post them here for advice. So many people get told that they have an Oxygen Sensor code & they go buy an Oxygen Sensor. Then they find out they had a cracked exhaust and that is what the Oxygen Sensor was trying to tell them. If you aren't familiar with how the codes work you can spend a lot of time and money on the wrong things.

At any rate, please let us know how you do.
Thanks, Garner

Thanks for using the forum,
Garner

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02-03-2011, 10:04 PM
Post: #3
RE: 96 Jeep Cherokee won't start in wet weather
(02-03-2011 09:48 PM)Garner Wrote:  I'm thinking that a lot of that decision would depend on how much you want to spend, how much you like to tinker, and how many miles you have since your last tune up. The problem is most likely the cap collecting condensation and while you have it off it's a good idea to change the rotor. Changing those two things and trying it would tell you if that was indeed the problem or not. If you have a lot of miles on since your last tune up & you aren't strapped for the money, wires, plugs, a gas filter, and an air filter added to the list would give you a good tune up. You may even want to put it on a scanner to check for codes and then have the computer cleared. If you do get codes please record the NUMBERS and post them here for advice. So many people get told that they have an Oxygen Sensor code & they go buy an Oxygen Sensor. Then they find out they had a cracked exhaust and that is what the Oxygen Sensor was trying to tell them. If you aren't familiar with how the codes work you can spend a lot of time and money on the wrong things.

At any rate, please let us know how you do.
Thanks, Garner

Garner:
Thanks for the advice. It's interesting that I went out and bought a new Distributor cap and rotor this afternoon and will install tomorrow. The Jeep has 95,000 miles on it, and the plugs, wires and rotor were replaced at about 50,000 miles. The air filter was replaced several times, but the fuel filter was never changed.

Thanks again for the response,

Rich
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