Engine stalling - JeepForum.com

Reply
 
LinkBack Thread Tools
post #1 of 23 Old 04-09-2007, 06:41 PM Thread Starter
AL1951
Registered User
2003 TJ Wrangler 
 
Join Date: Jul 2006
Location: Kennesaw,Ga
Posts: 4
Engine stalling

I have a 2000 TJ 4.0/auto. It has recently starting stalling for no apparent reason. This happens regardless of temp, rpm, idling or moving (any speed). I have replaced the throttle positioning sensor and the MAP sensor. I have had a scanner on it several times, no codes. I have also checked the fuel pressure when "on" and when running. 43 and 48 respectivly. I checked the pressure after it stalled and got the same results. I am running out of ideas of where to check next.
Thoughts anyone?

Thanks

AL1951 is offline  
Sponsored Links
Advertisement
 
post #2 of 23 Old 04-09-2007, 07:54 PM
87warrior
Registered User
 
87warrior's Avatar
2003 TJ Wrangler 
 
Join Date: Sep 2004
Location: Junction City
Posts: 1,608
If I understand your post correctly, you state that the engine stalls randomly... While moving, stopped, accelerating, decelerating, etc.

Does it sputter at all? Always fire back up? Any hesitation? Any recent engine/eletrical mods. Did you use a new gas station? Does it feel any differant prior to the issue? Any recent wheeling? Do the gages do anything before/durring/after the stall? Have you reset the computer (who knows?)

Engines need 3 things to run: Fuel, Air, Spark.... We just need to figure out which one keeps disapearing (probably fuel or spark )

03 Rubicon(Rubicon build)
92 Comanche (92/99 Comanche Project)
86 Comanche (Heavy Four)
87warrior is offline  
post #3 of 23 Old 04-09-2007, 08:00 PM
bobbert350
Registered User
 
bobbert350's Avatar
 
Join Date: Mar 2006
Location: bucks county, pa
Posts: 2,929
Quote:
Originally Posted by 87warrior
If I understand your post correctly, you state that the engine stalls randomly... While moving, stopped, accelerating, decelerating, etc.

Does it sputter at all? Always fire back up? Any hesitation? Any recent engine/eletrical mods. Did you use a new gas station? Does it feel any differant prior to the issue? Any recent wheeling? Do the gages do anything before/durring/after the stall? Have you reset the computer (who knows?)

Engines need 3 things to run: Fuel, Air, Spark.... We just need to figure out which one keeps disapearing (probably fuel or spark )

yea that would defently help alot if you give a little more info.. also one more question does it stall when its wet or damp outside just another question?

88 jeep wrangler, 4.2, auto---cragar soft 8's, d35 locker, bucket seats with 5 point harnesses, warn bumper w/ grill gaurd, winch plate, kc daylighters, light bar, herc the interrior, rebuilt tranny (yay) with tranny cooler, winch and msd ignition, 3.5 inch fabtech lift, currie boomerang shackles f/r, weber carb...[B]

Why only go anywere fast when you can go anywhere
bobbert350 is offline  
post #4 of 23 Old 04-10-2007, 06:42 PM Thread Starter
AL1951
Registered User
2003 TJ Wrangler 
 
Join Date: Jul 2006
Location: Kennesaw,Ga
Posts: 4
It doesn't make any difference at what RPM or work load it is running, dry,damp,hot or cold. It just cuts out. There has been no work done recently. It doesn't give any noticable signs before stalling. Lights and gages stay on after stalling. No alert lights.
AL1951 is offline  
post #5 of 23 Old 04-11-2007, 04:57 AM Thread Starter
AL1951
Registered User
2003 TJ Wrangler 
 
Join Date: Jul 2006
Location: Kennesaw,Ga
Posts: 4
It doesn't make any difference at what RPM or work load it is running, dry,damp,hot or cold. It just cuts out. There has been no work done recently. It doesn't give any noticable signs before stalling. Lights and gages stay on after stalling. No alert lights.
AL1951 is offline  
post #6 of 23 Old 04-12-2007, 01:10 PM
JEEP97TJ
Registered User
1997 TJ Wrangler 
 
Join Date: Feb 2007
Location: MD/Virginia Tech
Posts: 1,579
I Just started having the same exact damn problem with mine!!, two weeks ago when it started. what a PITA. Check out my thread: http://www.jeepforum.com/forum/f9/jeep-won-t-start-400306/
compare symptoms, seems EXACTLY the same. All the lights and stuff stays on.....stalls out of nowhere....mines a 97, 4.0L auto also!! Took it to shop last thursday, ran a diagnostic test, no codes came up. Driving my Jeep like this really bit me in the *** last night. I haven't had any alert lights either!!! Ive been looking into the fuel pump/sending unit, but I havent been able to pinpoint the problem.
Read over my thread, please let me know if you figure anything out.........its been the same exact problem.
JEEP97TJ is offline  
post #7 of 23 Old 04-12-2007, 01:13 PM
Jerry Bransford
Administrator
 
Jerry Bransford's Avatar
2004 TJ Wrangler 
 
Join Date: Jan 2003
Location: Escondido, California
Posts: 64,976
Sure sounds like the Crankshaft Position Sensor is failing! Mounted next to the flywheel on the driver's side, the CPS provides the engine's master timing signal and without it, the engine will die.

Getting Savvy...

When you have a choice, buy American.
Jerry Bransford is offline  
post #8 of 23 Old 04-12-2007, 01:20 PM
JEEP97TJ
Registered User
1997 TJ Wrangler 
 
Join Date: Feb 2007
Location: MD/Virginia Tech
Posts: 1,579
Quote:
Originally Posted by Jerry Bransford
Sure sounds like the Crankshaft Position Sensor is failing! Mounted next to the flywheel on the driver's side, the CPS provides the engine's master timing signal and without it, the engine will die.

Thats a new suggestion----any other info/symptoms on that??
Replacement Part??
anything??
JEEP97TJ is offline  
post #9 of 23 Old 04-12-2007, 01:38 PM
alvinl
Registered User
 
alvinl's Avatar
1998 TJ Wrangler 
 
Join Date: Dec 2006
Location: St. Louis, Missouri
Posts: 919
I just had the crank position sensor replaced on my '98 TJ. It's kind of pricey, but fixed my problem. Sounds like your problems are similar to what I was experiencing. Here is the thread I created about my problem.

http://www.jeepforum.com/forum/f9/sudden-loss-power-392618/
alvinl is offline  
post #10 of 23 Old 04-12-2007, 01:51 PM
JEEP97TJ
Registered User
1997 TJ Wrangler 
 
Join Date: Feb 2007
Location: MD/Virginia Tech
Posts: 1,579
That is interesting. What I find weird is that with such a similar problem--engine cutting out---I have read about 'solutions' which include : TPS sensor, O2 sensor, Fuel pump/sending unit, fuel lines, and now CPS. Gonna drop it off at the dealership tonight, see if they find anything---they better. I just want to be able to drive my Jeep again.
JEEP97TJ is offline  
post #11 of 23 Old 04-12-2007, 02:46 PM
Jerry Bransford
Administrator
 
Jerry Bransford's Avatar
2004 TJ Wrangler 
 
Join Date: Jan 2003
Location: Escondido, California
Posts: 64,976
I would just buy the CPS at the dealer and install it myself. It's only held onto the flywheel housing with a single bolt (two bolts on the 5-speed tranny version) and it just plugs in. The dealer will charge you an arm and a leg for diagnostics, the part, and the labor.

That your engine suddenly dies without warning is the symptom that lead me to the CPS. Those other items you mention would not generally cause intermittant complete engine stoppages.

Getting Savvy...

When you have a choice, buy American.
Jerry Bransford is offline  
post #12 of 23 Old 04-12-2007, 05:00 PM
JEEP97TJ
Registered User
1997 TJ Wrangler 
 
Join Date: Feb 2007
Location: MD/Virginia Tech
Posts: 1,579
I Searched Advanced Autoparts, they had quite a few to choose from, the second link has what I guess I would be looking for with the Automatic Trans. It isnt nearly as expensive as a fuel pump/sending unit assembly & installation. But, since the check engine light came on and stayed on when the engine would shut off and ignition still on, I think the dealership might be able to bring up a code. If theres no code, I will definitely think about ordering a new CPS, it'd be great if they would just find a code and repair it.

http://www.partsamerica.com/ProductL...osition+Sensor

http://www.partsamerica.com/productd...pe=762&PTSet=A

Mr Bransford, you do not believe that a faulty fuel pump/sending unit would cause the engine to stall out without warning? How about especially (as of yesterday) during hard turns (especially left hand turns)?? I am not sure if theres a correlation, but I remember reading another thread about the engine cutting off on turns
I appreciate your suggestions
JEEP97TJ is offline  
post #13 of 23 Old 04-12-2007, 05:05 PM
Jerry Bransford
Administrator
 
Jerry Bransford's Avatar
2004 TJ Wrangler 
 
Join Date: Jan 2003
Location: Escondido, California
Posts: 64,976
The CPS has a bigger history of failing than the fuel pump does... which is not to say the fuel pump could not be failing. I can say this... replacing the CPS is sure a lot easier and less costly than replacing the fuel pump assembly.

Getting Savvy...

When you have a choice, buy American.
Jerry Bransford is offline  
post #14 of 23 Old 04-12-2007, 05:09 PM
JEEP97TJ
Registered User
1997 TJ Wrangler 
 
Join Date: Feb 2007
Location: MD/Virginia Tech
Posts: 1,579
Agreed. Just searching out my options. Taking the Jeep (or attempting, since its at the shop which was conveniently at the bottom of the hill which my jeep cut out on last night) to the local dealership. They will waive the cost for a diag test if they find something wrong, so we will see. Next step is ordering a CPS then, not expensive, and i guess simple to install---do you have to remove anything to get access to the bolt, or just pop the hood up, unplug, unbolt, and put it in?
Thank you.
JEEP97TJ is offline  
post #15 of 23 Old 04-12-2007, 05:13 PM
Jerry Bransford
Administrator
 
Jerry Bransford's Avatar
2004 TJ Wrangler 
 
Join Date: Jan 2003
Location: Escondido, California
Posts: 64,976
The only thing semi-difficult about replacing the CPS is getting your arm and socket wrench up to where it is. It's HIGH up on the driver's side of the bell housing, and you get at it from the bottom. It's definitely doable though.

Getting Savvy...

When you have a choice, buy American.
Jerry Bransford is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
Engine stalling, No check engine light gpdaddyo1 TJ Wrangler Technical Forum 1 04-06-2011 09:11 AM
Engine stalling redmen07 TJ Wrangler Technical Forum 0 09-07-2008 02:10 PM
Engine Stalling TSEJEEPERS YJ Wrangler Technical Forum 3 06-13-2004 04:52 PM
Engine Stalling JeepTodd YJ Wrangler Technical Forum 1 10-22-2001 06:09 AM
Engine Stalling Nine5YJ YJ Wrangler Technical Forum 2 03-10-2001 12:45 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome