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Old 12-27-2011, 04:50 PM   #1
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Exclamation 1995 Jeep Wrangler won't start

Hello everyone!!! I need some help. For the past 2 weeks I have had some problems with my Jeep. Just some quick info first. I park it outside from about 5pm to 5am when I need to leave for work. It just all of a sudden quit starting when it started getting really cold at night but once the sun hits it around 10, when its no longer in the shade, it starts right up. This is what I have done since this has started. I put in a brand new battery and a new starter. It did great for a few days last week but then first thing this morning it didn't start. This is the only thing I can see, when it refuses to start I'm almost empty. Not dead empty, but close to. But when it is full or has plenty of gas, it takes a second to start but it does start.

Please help me if possible. I can't just be putting money into something that doesn't need to be fixed, as I have the battery and charger.

Its a 1995 Jeep Wrangler with 140,000 miles.

Thanks again

Jennifer

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Old 12-27-2011, 04:56 PM   #2
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Welcome! How cold? Is it below 32 degrees when it won't start? Just asking becuase there are capacitors that can freeze in the computer and cause that. As well, any moisture in a fuel line could freeze at 32 degrees. To start though, I wouldn't let it get under 1/4 tank and see if your trouble clears.

another key symptom of the computer ECU is that it will not turn on the fuel pump when the key is turned to ON. If you turn the key to on, then wait for 1-20 minutes and all of a sudden the fuel pump growls and your check engine light comes on (at that point it will start) then its def. the ECU. Is that what its doing or no? (Computer = ECU = PCM all the same thing. Electronic Control Unit, Primary Control Module, Computer)

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Old 12-28-2011, 06:19 AM   #3
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Didn't really say but from what I get, the engine is cranking, but not firing up, right? Confusing part is why you replaced the battery and starter if this is what is happening.

I'd be leaning towards the gas freezing up, especially when the tank is near empty, especially if you have water in the tank.
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Old 12-28-2011, 12:06 PM   #4
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Seven Services;

Thank you so much for your advice. It has been well below 32 degrees every evening. It was 25 degrees this morning when I couldn't sleep so I went outside, the Jeep has a full tank of gas and it started right up. It was way to cold to do what you said about the computer, but, I will try it tomorrow morning. I do have one question though, why would I have moisture in the gas tank? I'm just wondering on that. I personally have no idea why that would happen. First thing tomorrow morning I will do the second part of your request and see what happens and let you know. Thank you so much, you have no idea.

Shelby427;

If you read what I said, I said that the engine is not doing anything in the freezing mornings until the sun hits it. So I started with the battery and replaced that and it didn't work, still nothing the next freezing morning till the sun came up and warmed up the car, then I tried the starter. It started up with little trouble after that until Tuesday morning when I was below 1/4 of a tank of gas and wouldn't do anything again. Of course until after 10am.
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Old 12-28-2011, 12:20 PM   #5
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Welcome to my hell!...I have had this problem on and off since I moved to south dakota! This is what I have found...
(a)distibutor cap dirty, so i cleaned the 'posts' inside the cap, they get corrosion build up. i just use a screwdriver and chip the crap off.
(b) loose connection at the throttle body...I just took the plugs off the 2 sensors and re attached em
(c) fuel pressure regulator replaced...It's the little thing on the front of the fuel rail with the vacume hose attached. (about $60..wait till you know this is bad!)
(d) Right now I have found that if I just turn the key ON (not start, just on) Then Turn it off and then on to start ..it fires right up.
I would check the easy stuff first Like your FUEL filter...it's pretty cheap.(It is mounted infront of your drivers side rear tire...attached to the inside of the frame...behind a little 'metal cover' (i think the cover is held by 2 10mm bolts, and lots of dirt!)
I know this sounds like a bunch of crap to check, but every one of these has happend to me......and It's alot cheaper to check these first before you find out your fuel pump is bad...thats a pricey fix cause it's inside your 'tank'
It gets down to minus 40 degrees here and thats hard on the starter and elec system. so i know the feeling! ......I wish you good luck Jennifer!...............JJ
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Old 12-28-2011, 05:36 PM   #6
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Jerryjeep;

Thank you thank you thank you. I cut and pasted all your ideas and i'm going to try it out starting tomorrow. You have no idea how much you have helped me. I'll let you know how it goes.

Stay warm my friend!!!

Jennifer

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