Jeep Cherokee Forum

Go Back   Jeep Cherokee Forum > Technical Discussion > Grand Cherokee Tech
Register Forgot Password?
Search

Welcome to Cherokee Forum!
Welcome to Cherokee Forum,

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!


Reply
 
 
 
submit to reddit
 
Thread Tools Search this Thread Display Modes
Old 02-12-2010, 04:40 PM   #1
Newbie
 
Join Date: Feb 2010
Location: Brandon, SD
Posts: 4

View emrys_hawke's Photo Album My Photos
1995 Grand Cherokee
Default 1995 Grand Cherokee Engine Problem

Got a 95 grand cherokee. engine runs great if i got the gas down but wont idle at all. check engine light is on. took it to a shop and they said after scanning that the only problem was the batter wasn't holding a good enough charge. so bought a battery. problem didn't go away. alternator is good, plugs and wires are good. where should i look next? other symptoms are horrible fuel economy, soot coming out the exhaust, wont downshift correctly and sometimes will stumble when getting up to speed. all the electronics checked out....
emrys_hawke is offline   Reply With Quote
Old 02-12-2010, 06:33 PM   #2
Newbie
 
Join Date: Feb 2010
Location: NoVa
Posts: 13

View DemonGrinder's Photo Album My Photos
1993 Grand Cherokee
Default

soot coming out of the exhaust is usually a sign of too rich condition and you are dumping too much fuel which points to an air/fuel mixture problem or a sensor that adjusts these values. I would start with checking cooling temp sensor, there is usually a separate one for the engine computer which adjusts fuel mixture in conjunction with the oxygen sensors.

by the way, what engine do you have, and did they tell you any codes for the CEL ?
DemonGrinder is offline   Reply With Quote
Old 02-12-2010, 08:53 PM   #3
Newbie
 
Join Date: Feb 2010
Location: Brandon, SD
Posts: 4

View emrys_hawke's Photo Album My Photos
1995 Grand Cherokee
Default

It has the 5.2. The shop guy told me the code was 41. dont know what that codes for tho and cant seem to find a jeep code guide that i don't have to pay for
emrys_hawke is offline   Reply With Quote
Old 02-12-2010, 08:59 PM   #4
Caracticus Potts The Mod
 
Willys55's Avatar
 
Join Date: Jul 2009
Location: Greenville, NY
Posts: 4,058

View Willys55's Photo Album My Photos
96,95,94,93 Grand Cherokee
Default

code 41 is for when the alternator is not charging, and if the battery is run down the alternator is not ramping up the voltage. This can cause rough idle, stalling and internitting surge. Check that the coolant temp sensor is not shorted or open.
__________________
Brian Perrine will be in my memory Forever.....Good Bye My Friend

NEVER said I was perfect.....just helpful.... Never Use Post Count as A Knowledge Gauge

My name is Russ, my friends call me "Doc"
Willys55 is offline   Reply With Quote
Old 02-13-2010, 05:07 PM   #5
Newbie
 
Join Date: Feb 2010
Location: Brandon, SD
Posts: 4

View emrys_hawke's Photo Album My Photos
1995 Grand Cherokee
Default

the coolant temp sensor inside the overflow? And out of curiosity how does the coolant sensor effect the fuel? One more question... went to go check that sensor and the overflow is full of ice... Could that be causing the problem?
emrys_hawke is offline   Reply With Quote
Old 02-13-2010, 05:29 PM   #6
Member
 
zedpapa's Avatar
 
Join Date: Dec 2009
Location: san diego
Posts: 205

View zedpapa's Photo Album My Photos
1989 Cherokee
Default

when the engine is cold, the computer injects extra fuel much like a choke. when the engine warms up the computer can then run at the correct fuel mixture. if your coolant overflow bottle is full of ice, it could be that your ANTIFREEZE mixture is incorrect. i would suggest draining and filling with the correct mixture. < one thing i would check is the TPS(throttle position sensor). if that is incorrect or missing, it will cause the problems you are describing.

zedpapa
__________________
1989 cherokee 2dr w/2002 4.0, 1998 ax-15 w/ external slave, 3" lift 31x10.50x15 BFG A/T, ARB ZJ front bumper, WJ front brakes on 1994 XJ D30, WJ Steering, C8.25 w/3.55 and ZJ discs, Detours Tailbone, and a few other things here and there
COMING SOON: np242 and 4WD!
zedpapa is offline   Reply With Quote
Old 02-22-2010, 12:18 PM   #7
Newbie
 
Join Date: Feb 2010
Location: Brandon, SD
Posts: 4

View emrys_hawke's Photo Album My Photos
1995 Grand Cherokee
Default

k went through and changed the tps. put it on wrong the first time... adjusted it into the right position. Still has many of the same problems. Just for kicks i even replaced the ect (coolant temp sensor), but nothing changed. the only solution at all is i turned the idle screw up to prevent stalling... where should i look next? ive been told that mopar 318s are notorious for having vacuum leaks under the intake manifold... do i need to pull that all apart or is there an easier fix i should start with?
emrys_hawke is offline   Reply With Quote
Old 02-22-2010, 01:35 PM   #8
CF Veteran
 
ol"blue's Avatar
 
Join Date: Mar 2009
Location: Tenn. and Mich.
Posts: 28,056

View ol"blue's Photo Album My Photos
2004 Grand Cherokee
Default

You can check the codes yourself. Here's how. >-> http://jeephorizons.com/phpbb/viewtopic.php?t=2719
__________________
Dan
'04 Grand Cherokee SE: 4.7L V8 w/235 HP, 4X4
'04 Saturn Vue: 3.5L V6 w/250 HP, AWD

"...Never Use Post Count as A Knowledge Gauge." Willys55

CBW Member#97

If no answer, ask here>
www.CHEROKEETECH.com


RIP Carroll Shelby
http://www.carrollshelbyfoundation.org/
http://carrollshelbyfoundation.com/



If you're not breaking parts you're not making enough power!!!
"I NEED MORE TRACTION, NOT MORE BOOST"

ol"blue is offline   Reply With Quote
Old 02-22-2010, 01:35 PM
 
 
 
submit to reddit
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
1995 Jeep grand cherokee lerado HEATER ISSUE!!! jimmy5489 Grand Cherokee Tech 4 01-11-2010 06:06 PM
I need a engine!!! i need a v6 for my 1995 jeep cherokee scottieamo Wanted 5 10-30-2009 08:18 PM
OEM Fog Light Lens cracking - 1995 Grand Cherokee LTD trdehmer Grand Cherokee Tech 3 09-29-2009 12:31 PM
Engine start problem Grand cherokee 5.2 magellan Grand Cherokee Tech 4 09-24-2009 10:55 AM
V8 Jeep Grand Cherokee Magnum Computer (1995) jamaicanmecrazy For sale 0 10-08-2008 06:36 PM

Go Back   Jeep Cherokee Forum > Technical Discussion > Grand Cherokee Tech



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not 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 Off
Refbacks are Off



All times are GMT -5. The time now is 04:34 PM.


This site is in no way affiliated with Jeep or Chrysler.

Emails Backup