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Old 02-20-2008, 09:30 PM   #1
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Exclamation How flammable is a tj? (My jeep doesnt start)

b/c I feel like setting mine on fire right about now.


long story short, my jeep doesnt want to start now.


I havent ran the motor in about 1 month.
I charged up the battery and started it.
It had some ticking noise that dyed down after about half a minute.

It usually has some ticking noise comming from underneath the rear of the valve cover, but usually I really have to be paying attention to hear it since it's so low. This time it was louder but wasnt for long.

Then I drove it around the block. About halfway through I was giving some gas around a turn I the motor "stumbled" for a second and sounded like it wanted to turn off. I got back and parked it. It was idling fine and I turned it off.

I came back about 15minutes later and tried to start it. It cranked up and sounded like it wanted to turn off, then it did. I kept trying to start it and it did that a few more times. now it turns over and sounds like its going to start for a split second then turns off.

also, my driveway has a very slight slope. I put it in gear so that my jeep wouldnt roll but it started to roll very slowly and in pulses. its never done that before, the motor always holds it.

sorry for the long read, can anyone offer any advice on what to check?



I appreciate ANY advice,
Thanks,
-Matt

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Old 02-20-2008, 09:42 PM   #2
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Clicking noise? Have you looked at the distributor?

~Lev

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Old 02-20-2008, 09:50 PM   #3
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Clicking noise? Have you looked at the distributor?

~Lev
I have a 2000 tj with the "coil packs" instead of a distributor. (i think thats what they are called) I think the ticking is comming from the valvetrain. (?)

Thanks,
-Matt
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Old 02-20-2008, 09:55 PM   #4
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If you have a dist. take it off and look at the points and the rotor button. scrape off any corrosion on the points and if the rotor button needs replacing then get a new one. For my s-10 it was about 20 bucks for a button. Then try it
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Old 02-20-2008, 10:09 PM   #5
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I have a 2000 tj with the "coil packs" instead of a distributor. (i think thats what they are called) I think the ticking is comming from the valvetrain. (?)

Thanks,
-Matt
Gotcha
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Old 02-20-2008, 10:15 PM   #6
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yeah sounds like something in the valvetrain if it is moving when it is off in your driveway, but then again im not an engine expert
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Old 02-20-2008, 10:48 PM   #7
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Gummed up injectors?
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Old 02-20-2008, 10:48 PM   #8
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if its not holding in gear, you do have it in 1st or reverse rite?, then you have low compression for some reason. my guess would normally be vavle seals, after the thing sits for a month without oil they tend to dry up. as for the ticking you probably have a loose or bent/broken rocker. not a big deal but do fix it as it can get worse. it probably just ticked becasue of lack of oil. take the valve cover off and have a look. on an i6 motor being down one cylinder wont hurt to much all it will do is make it idle a little rough. pull the plugs and see if any of them are fouled. the gas gould have gone bad after a month and cloged the injectors too.
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Old 02-20-2008, 11:45 PM   #9
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now you said your batt died and you had to recharge it. now two times ive had my battery discoed and when i hooked everything up, my jeep wouldnt idle for shit. i had to pedal it to keep it running. i drove it around in gear and it would stall at stop lights. this went on for a couple days and now it runs great. you might just need to pedal it for a bit.
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Old 02-21-2008, 01:23 AM   #10
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now you said your batt died and you had to recharge it. now two times ive had my battery discoed and when i hooked everything up, my jeep wouldnt idle for shit. i had to pedal it to keep it running. i drove it around in gear and it would stall at stop lights. this went on for a couple days and now it runs great. you might just need to pedal it for a bit.
very true i didnt think about that. whn your bat dis your ecu needs to "relearn" th way your motor runs. now if you can only gt it startd.
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Old 02-21-2008, 01:41 AM   #11
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I had a Ford Explorer that did the same thing.

I agree with Rawkon, pedal it a bit and blow that crap out.

My Explorer wouldn't start for shitake. I tried for at least 15 minutes and I thought I was going to blow the starter or kill the battery.

When it did start, I floored it several times and it stuttered then it finally fired up.

A few days before, I filled up with Thrifty Gasoline and I think there was water in that cheap gas.

One problem: Cheap gas or water in your tank; I just pedaled it a bit in neutral and flushed the junk out.
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Old 02-21-2008, 06:42 AM   #12
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Fuel Filter??
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Old 02-21-2008, 06:55 AM   #13
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Fuel Filter??
X2 - how long has it been since you changed your fuel filter?

Could be bad gas too. I'd throw a can of dry gas into the tank, re-charge the battery and get some gas from a different station. With the ignition key in the "pre-start" mode, check to see if you have fuel pressure on the injector rail (open the cap on the Schrader valve and depress the pin). If you have fuel pressure the gas will release under high pressure (goggles are a good idea to wear for this test).

If you have fuel pressure, then it's most likely an electrical / ignition problem. If you don't have pressure, then there might be a problem with the fuel system (pump, filter)
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Old 02-21-2008, 10:26 AM   #14
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Remember now, the fuel filter on the TJ is part of the fuel pump. There is no in-line filter on the TJ.
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Old 02-21-2008, 10:33 AM   #15
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Disconnect your battery again for a half hour or so, let it, ecu, reset back to factory, you might have interrupted the ECU learning process. Also how much gas is in there and how old is it ? I had an annoying throttle problem on my XJ since the new engine went in last year, I figured TPS but it kept being put on the back burner, couple of weeks ago the alt went out and it sat over nite with the battery disconnected till the new alt went in. Reconnected, went thru the 'ran like crap' learning curve and lo and behold, the throttle problem is gone.
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Old 02-22-2008, 06:45 AM   #16
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Remember now, the fuel filter on the TJ is part of the fuel pump. There is no in-line filter on the TJ.
Good point. I have not serviced my '02 yet (my last Jeep was a '65 CJ6) .... Keep thinking I'll find the fuel filter hanging on the inner fender or frame rail somewhere...NOT!
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Old 02-22-2008, 07:18 AM   #17
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The ticking noise was probably due to heep sitting for a month, all the motor oil was in the sump, and when you first fired it up you heard valvetrain noise untill the oil pump was able to supply the entire motor with lubrication.


On the stumbling/ no start issue:

To isolate the problem, check for spark at your spark plug boot. If you get no spark, Things to check: distributor rotor/cap, coil, crankshaft position sensor.

If you get spark, then you know it's a fuel problem; Pump, pressure regulator, TPS, air filter, fuel filter etc.
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Old 02-22-2008, 12:50 PM   #18
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Thanks ALOT for all of the replies.

When It wasn't starting , It sounded like a car thats out of gas so I went down the street and got a gallon of gas for it.


at the beginning, after jumped the battery, I let it sit for about 15 minutes while I ate before I took it for a drive.

yesterday I disconnected the battery for 1/2 hr then tried to start it again, it didn't start.

it just cranks and cranks but never turns over for a couple seconds like it did before.


How do I check for spark?



(sorry for the badly typed post, im being rushed off the computer)
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Old 02-22-2008, 01:22 PM   #19
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also, I did the thing to check for coeds (press the odometer button the turned the key to the on position and let go) but no codes showed up
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Old 02-22-2008, 05:41 PM   #20
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also, I did the thing to check for coeds (press the odometer button the turned the key to the on position and let go) but no codes showed up
that wont work on your 2000 cause it has the obd 2 or w/e its cal;led you need a code reader....

did you try starting it and holding the gas pedal down a little bit? when my battery was dead for awhile the computer forgets how to idle it (thats what my service manager said at least) so when you crank it, idle it manually with your foot for about 3-5 min and then release to see if it stays on
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Old 02-22-2008, 07:15 PM   #21
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check spark by taking a spark plu off. have it in the wire with the plug off let the electrode toutch a ground (any metal on your jeep) and crank it. you should see the spark on the eectrode of the plug.

I say if you dont know what your doing take it to a mechanic.

if it were me Id make sure you got enough volts in the batterey. dont gas it keep cranking it. too much pedal may flood your cylinders and will not detonate.

there are many things to do for a "no start". you just have to isolate them one by one.

basic is spark and fuel.

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