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Unread 12-27-2013, 01:28 AM   #1
Spify
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1996 ZJ 
 
Join Date: Sep 2013
Location: Whiteman Airforce Base, Missouri
Posts: 17
My Jeep is a hole in my pocket. Please help!

Alright, Soooo. It all started with the red Grand Cherokee that I paid $1400 for off craigslist. I got it at 260k miles. She is now pushing 268k. I'll start out with the most immediate and annoying problem *the one that has emptied my pockets*

- Problem # 1

It stalls, like no tomorrow. It'll stall about 6-10 times every morning on my way to work a 12 mile commute. I'll be driving 55 mph then the engine just shuts off. No stutter or anything, no flickering lights; just as smooth as if I were to turn ignition off. Then recently, just last night, I was driving down the same road, the same speed, and the engine cut off RPM, went straight down to 0 and I kept my foot on the gas and the RPM went back up. It's like it was about to stall but it came back to life. I drove about 1 more mile then it stalled again forcing me to pull over like all the previous times.

Sometimes It will stall and start back up immediately then drive for a bit. Sometimes it dies while at idle as i am about to leave to go somewhere, or after it has been running or driving, (It is an automatic.) I bought it in August and didn't have any problems from it but lately here in Missouri it has been below freezing and i am having trouble.

Ever since I bought it, it's had two engine check light codes P0301, P0300 (it had them in August when i bought it, the stalling problems started in November)

- Thing's I've replaced:
Air Filter,
Spark Plugs,
Spark Plug Wires,
Distributor,
Rotor,
Crank Shaft Position Sensor,
Battery.

- Things I have ordered but not yet installed nor received:
Fuel Filter,
Ignition Coil,
Upstream 02 Sensor.

- Problem # 2

This seems to be a less serious problem but still a problem none-the-less. During my many stalling antics I have to pull over the shoulder of the road, well today the good ol' Missouri roads shone light down on me and provided me with nothing but a ditch to pull over into (and an approaching Semi-Truck from the rear). Desperate and annoyed I pulled over into the ditch, restarted the engine and waited for the semi-truck to pass. When driving out the undercarriage of the jeep scraped the side of the road *I could feel the resistance* It wasn't much but after I noticed a knocking sound coming from the Front Left Wheel, (This sound was experienced in the past but only during left turns)

When I got to work I took a peek under the Front Left Wheel to see the CV Axle Shaft's rubber seal was blown out (grease, and oil exposed) I received this information when I changed my tires at Wal-Mart back when I bought the Jeep in August, from my understanding it wasn't really a big deal. Upon Inspecting the axle I could see that the shaft itself was the rattling sound I had been hearing it appears that the shaft is just bouncing around instead of being connected like it should be. The rod that is wiggling around is the rod beneath the axle seal. You can see the Seal in this Ebay product http://www.ebay.com/itm/1999-2004-Je...-/390401917351 The rod inside the seal is bouncing around in that housing. I didn't even know what this part was or it's purpose until I researched it just now. I am hoping it doesn't need replacing as I refuse to visit a rip off mechanic, and I live in Apartments so I don't have anywhere to work on my Jeep but my parking lot. I am hoping maybe something is loose and can be tightened for this problem.

Anyways, I thank-you for reading, I am very desperate for some help here I don't know what to do. I was so confident and proud of my Jeep when I first bought it but now I feel nervous and afraid whenever I drive it. leaving work is always a cross-my fingers and hope kinda thing. Waking up to go somewhere is just as bad. I've been late to work about 5 times now because of this stalling problem and my supervisors are getting sick of it (I am in the United States Airforce) I want to fix this problem as soon as I can and I am investing a lot of time in it, However I don't have the experience or knowledge. If anyone can help that would be greatly appreciated.

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Unread 12-27-2013, 04:00 AM   #2
ZeeJay1997
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if the coil or o2 sensor doesnt fix it, try cleaning and strapping the PCM connectors and clean the PCM grounds. see #1 and 2 in the link below.

cant hep with the axle , sorry.
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Unread 12-27-2013, 04:01 AM   #3
Pugulis
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Sounds like a coil problem. After the install, update your status. Check all your grounds (i.e. battery, power block). As for the CV shaft. You can pick them up for 50 bucks and install yourself in under 2 hours. I don't know about Whiteman, but most military bases I've been on have a hobby shop to work on your car. They'll have all the tools you'll need for the job.
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Unread 12-27-2013, 05:05 AM   #4
coralman
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As far as jeep being a hole in pocket, all I can say is, once a hole starts it usually gets bigger! Stick with it, things will level out. Get your hands on a factory service manual, it will be your friend. They have them on ebay, http://www.jeep4x4center.com/knowled...ex.htm#service and at the linked site.
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Unread 12-27-2013, 05:22 AM   #5
AnotherRedZj
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Quote:
Originally Posted by Spify View Post
Alright, Soooo. It all started with the red Grand Cherokee that I paid $.............
STOOOOOOP!

Don't tell any more! I've moved past that and am at a better place know!

All kidding aside, listen to zeejay. He'll get that stalling issue figured out! And the cv is cake to switch out!

Love it or hate it... Welcomt to the club!

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Unread 12-27-2013, 11:40 AM   #6
jeells
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is not your harness it is the pcm. This us whst you need to do and it will work. Take the antifreeze Reservoir out. Then unplug the pcm.next unbolt it ( 3 bolts), now you notice there it's two plates on the front, take the two torque screws out that everybody says to unscrew out all the way. Now u need to "carefully" pull off the covers. One of them has a plug inside that connects your harnesses . Be carfull with that when taking it apart. You will then see on that plug in part there is solder points on it THAT IS THE PROBLEM!!!! now re-solder on every single connection. It usually the one of the first 3 that lose connection. But just do them all. Then put hot glue over all your solder points. Put it back together and your stalling problem is over I guarantee. So do this before spending any money on a crank sensor or any other sensor. And you'll thank me !!! :-)
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Unread 12-27-2013, 11:43 AM   #7
jeells
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I'm telling you it's your problem ddff o what I said and your stalling problem will be fixed I promise.
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Unread 12-27-2013, 11:49 AM   #8
Oldfrog
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Quote:
Originally Posted by jeells View Post
is not your harness it is the pcm. This us whst you need to do and it will work. Take the antifreeze Reservoir out. Then unplug the pcm.next unbolt it ( 3 bolts), now you notice there it's two plates on the front, take the two torque screws out that everybody says to unscrew out all the way. Now u need to "carefully" pull off the covers. One of them has a plug inside that connects your harnesses . Be carfull with that when taking it apart. You will then see on that plug in part there is solder points on it THAT IS THE PROBLEM!!!! now re-solder on every single connection. It usually the one of the first 3 that lose connection. But just do them all. Then put hot glue over all your solder points. Put it back together and your stalling problem is over I guarantee. So do this before spending any money on a crank sensor or any other sensor. And you'll thank me !!! :-)
I've had 5 pcms in mine and not a one of them was the problem you described. I saw that youtube video, too....and have put an ohmmeter across all those connections. They were all good. No amount of wiggling changed the connections on a single pin.

There is, however, a good writeup here on JF showing how to reflow the solder on the main circuit board of the PCM...but it's not the connector you are referring to.

My best guess was that a bad upstream 2 sensor was taking out my PCMs.

Go through Zeejay's list. There are no shortcuts.
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Words of wisdom, Posted by Zeejay:
"..it's not air, it is the opposite of air... suckage so to speak."

Stalling? Work through Zeejay's list
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Unread 12-27-2013, 03:58 PM   #9
coralman
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Give credit where credit is due
http://www.jeepforum.com/forum/f13/9...tures-1303589/
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Unread 12-27-2013, 08:46 PM   #10
papitt
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.. Man I'm with you getting to work late sucks.. So I guess start out an hour earlier. Like was said ask about a shop on base to work in. And check for some help.. 2 hours should swap that CV OUT An maybe even 45 minutes if you can get a couple od soldiers to help that do know what they are doing . Read the service manuel .. take off wheel unbolt and remove / replace .. in reverse . Ya RIGHT .. bUT IF SOMEONE has done it that's about what they will say.
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Unread 01-02-2014, 12:33 PM   #11
Spify
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update: I recently replaced the fuel filter, coil and the o2 sensor before the cat and it is still stalling. Any other ideas? I hope it's not the PCM but I will be messing with that here in the near future. Another problem has reared it's head as well; my Jeep is an Automatic, It used to shift gears at 2k rpms now it's taking longer and not changing till 3-4k RPMs. This just started happening yesterday any ideas?
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Unread 01-02-2014, 02:15 PM   #12
Gearhead31
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Shifting issues.. The proper place to start is checking the trans fluid level on level ground while vehicle is warm and in neutral. It's very picky about being low or overfilled.

About the stalling - Others are saying PCM so I might stick with that route and try that first before trying to do every little thing that could stall a jeep.. Only things that come to mind are a clogged up cat, pcm issues, fuel delivery(either fuel pump, fuel rail or injectors are clogged/going bad) and a loss of compression(blown head gasket). That's the main things that would be left, so.. Keep trying to rule out the PCM first.
Best of luck getting it fixed!
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Unread 01-02-2014, 03:52 PM   #13
Jimmer
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There is a very good write-up on replacing the CV axles over in the WJ forum: http://www.jeepforum.com/forum/f310/...w-pics-377208/

I just did this repair over the weekend. If there is no rust on the vehicle, you have all the tools ready, and you have been through the procedure once already, you could probably do it in 15 minutes, but . . . without all those planets aligning, it could take considerably longer than a couple of hours. Neil Young said, "Rust never sleeps". If you have rust, start using the PB Blaster in plenty of time before you start the actual work.
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Unread 01-02-2014, 04:33 PM   #14
Gearhead31
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Quote:
Originally Posted by Jimmer View Post
I just did this repair over the weekend. If there is no rust on the vehicle, you have all the tools ready, and you have been through the procedure once already, you could probably do it in 15 minutes, but . . . without all those planets aligning, it could take considerably longer than a couple of hours. Neil Young said, "Rust never sleeps". If you have rust, start using the PB Blaster in plenty of time before you start the actual work.
THIS!!

Rust will easily turn a 5 minute job into a 5 hour job
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Unread 01-02-2014, 10:17 PM   #15
JS97ZJ
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Follow the steps in ZeeJay's write up in his sig.
If tapping or moving the plugs on the PCM cause it to stall your probably looking at a PCM.
If you can solder or know someone that can solder try this procedure


http://www.jeepforum.com/forum/f13/9...tures-1303589/


I've soldered up 4 PCMs to fix this stalling problem. Each was a success except for ZeeJay's.
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