Jeep Cherokee Forum

Go Back   Jeep Cherokee Forum > Technical Discussion > OEM 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 09-07-2011, 09:54 PM   #1
Newbie
 
jnslick's Avatar
 
Join Date: Sep 2011
Location: Ohio
Posts: 14

View jnslick's Photo Album My Photos
1990 Cherokee
Default 1990 XJ, 4.0 4x4 auto, got a few problems.

I've had it about a month, and its been giving me nothing but problems, which i hate to say, because its my first jeep, and i've always been a fan. first and foremost, it overheats, and i can't figure out why. i've put a new waterpump adn thermostat on it, and replaced the serpentine belt and idler pulley, just in case. (they needed changed anyways) but here's the kicker, it doesn't burn or leak coolant, and it only overheats when its over 70 degrees out, otherwise its fine. its originally from maryland (i'm in ohio) would that have anything to do with it, being a change in altitude and temperature? also, when it gets hot, the coolant looks kinda foamy, i heard it may be a leaky headgasket, but idk.

Secondly, it dies on me from time to time, but only when i'm going really slow. like 15-20 mph slow. it has new plugs and wires, and the plugs are gapped correctly. it seems like its flooding out to me, but its MPFI...which i also found a little unusual in a 1990 Cherokee, something that old i figured would at the most have a throttle body.

next, pretty simple, how much of a headache is it going to be to switch out the tilt column i have now with a non tilt one? i'd imagine not too hard if they're from around the same year, but you never know.

also, the front end sways side to side when i go over a bump unevenly, part of the stabilizer is unbolted, is that the problem?

And, it has a tick/knock when its under any kind of load, and sometimes the oil pressure is at 60psi, sometimes its at 20...sensor going bad? hopefully not the oil pump going bad, that would really suck.

lastly, is any of the things above connected to why i have to crank it for 4-6 seconds before it finally starts, while holding it at half throttle?

any and all help will be appreciated

Last edited by jnslick; 09-07-2011 at 10:01 PM. Reason: adding details to title
jnslick is offline   Reply With Quote
Old 09-07-2011, 10:33 PM   #2
CF Veteran
 
Slick761's Avatar
 
Join Date: Jun 2011
Location: Nor-Cal
Posts: 2,857

View Slick761's Photo Album My Photos
1990 Cherokee
Default

Quote:
Originally Posted by jnslick
I've had it about a month, and its been giving me nothing but problems, which i hate to say, because its my first jeep, and i've always been a fan. first and foremost, it overheats, and i can't figure out why. i've put a new waterpump adn thermostat on it, and replaced the serpentine belt and idler pulley, just in case. (they needed changed anyways) but here's the kicker, it doesn't burn or leak coolant, and it only overheats when its over 70 degrees out, otherwise its fine. its originally from maryland (i'm in ohio) would that have anything to do with it, being a change in altitude and temperature? also, when it gets hot, the coolant looks kinda foamy, i heard it may be a leaky headgasket, but idk.

Secondly, it dies on me from time to time, but only when i'm going really slow. like 15-20 mph slow. it has new plugs and wires, and the plugs are gapped correctly. it seems like its flooding out to me, but its MPFI...which i also found a little unusual in a 1990 Cherokee, something that old i figured would at the most have a throttle body.

next, pretty simple, how much of a headache is it going to be to switch out the tilt column i have now with a non tilt one? i'd imagine not too hard if they're from around the same year, but you never know.

also, the front end sways side to side when i go over a bump unevenly, part of the stabilizer is unbolted, is that the problem?

And, it has a tick/knock when its under any kind of load, and sometimes the oil pressure is at 60psi, sometimes its at 20...sensor going bad? hopefully not the oil pump going bad, that would really suck.

lastly, is any of the things above connected to why i have to crank it for 4-6 seconds before it finally starts, while holding it at half throttle?

any and all help will be appreciated
1. Replace the pressure tank and cap... most likely cause of your overheating and foamy coolant. A system flush wouldn't hurt either.
2. The dieing I would say is possibly egr or fuel pump related... need more info on that.
3. Why would you want a non tilt column?
4. Sounds like something loose with the track bar or bushing.
5. Doubt its the pump and what kind of oil/filter also is it 20 at idle or in the rpms. A good seafoam treatment will probably help the ticking.
6. You should not need to hold the throttle to start it. This is probably related to the idle air control valve. Also may have something to do with it cutting out at low speed/rpm.
__________________
Chillin on a dirt road
Slick761 is offline   Reply With Quote
Old 09-07-2011, 11:07 PM   #3
CF Veteran
 
Firestorm500's Avatar
 
Join Date: Apr 2009
Posts: 3,487

View Firestorm500's Photo Album My Photos
1987, 1992, 2006 Cherokee
Default

Cranking for 5-6 seconds with foot off the gas is normal. Don't hold foot on accelerator pedal.

You need 10 PSI of oil pressure per 1,000 RPM. This is with oil at operating temperature.

I wouldn't change to a non-tilt column, but that is up to you.

Also this is a used, 21 year old vehicle. Expect that you will have to fix some things. When you get everything worked out, it will make a good vehicle.
Firestorm500 is offline   Reply With Quote
Old 09-07-2011, 11:16 PM   #4
CF Veteran
 
DFlintstone's Avatar
 
Join Date: Aug 2011
Location: Nor-Cal Coast
Posts: 7,338

View DFlintstone's Photo Album My Photos
90,84 Cherokee
Default

Because my check valve does not hold, if I turn the ignition on once or twice for a few seconds first, it starts on a 3 count instead of 6 or so.

Does it ever overheat when you are cruzen, or just around town?
__________________

87-90 Renix jeep owners. This is a link to great info! http://www.cherokeeforum.com/f23/tes...itings-136452/
The book's wrong! #1 is at 5:00, viewed from the side. 153624 clockwise.
I RECOMMEND 280 155 746 INJECTORS, FOR YOUR 87-90 JEEP. 4 holes are better than one, and they won't leak out the middle,(like stock injectors can)
"The problem is not that we have too many fools, it's that the lightning isn't distributed right." Mark Twain
DFlintstone is offline   Reply With Quote
Old 09-07-2011, 11:24 PM   #5
CF Veteran
 
Slick761's Avatar
 
Join Date: Jun 2011
Location: Nor-Cal
Posts: 2,857

View Slick761's Photo Album My Photos
1990 Cherokee
Default

On the steering column if it is loose there's a write up in technical write ups on how to tighten it.
__________________
Chillin on a dirt road
Slick761 is offline   Reply With Quote
Old 09-07-2011, 11:43 PM   #6
Junior Member
 
Join Date: Aug 2011
Posts: 39

View firefighter89's Photo Album My Photos
Cherokee
Default

If your in to it, its real easy to do a switch from the closed system to an open system. Just find a donor 92 or newer and get the radiator, t-stat housing, and about 10 feet of new heater hose. It worked great for me. My coolant bottle actually blew up under the hood. So it was get a new one or do the switch.
firefighter89 is offline   Reply With Quote
Old 09-08-2011, 01:44 AM   #7
Newbie
 
jnslick's Avatar
 
Join Date: Sep 2011
Location: Ohio
Posts: 14

View jnslick's Photo Album My Photos
1990 Cherokee
Default

Slick761 2, what all info would you need? i suppose the fuel pump is in good shape, it sounds strong when i hit the key. 3, i'd rather get a non tilt column and not have to worry about it getting loose again, also, i've already torn the lower sleeve off the column trying to get at the screws to tighten the tilt section, so its a matter of aesthetics now as well. 5, i'm not sure, i haven't gotten around to changing it yet, but its full, and the pressure varies on its own, it doesn't seem to be related to the RPMs at all. also, i'm sure running a higher octane would help the ticking as well.

Firestorm500 I suppose its just a habit i've gained from my experience with other vehicles that had carburetors, i almost can't help but feather and hold the throttle. i know jeeps are good vehicles, i have seen them go upwards of 500k miles and not miss a beat when they're taken care of...but this one wasn't, it had the guts run out of it many a time before i got my hands on it.

DFlintstone When its over 70 degrees outside, it only overheats when i'm cruising down the road, it will sit and idle at cool temps for at least an hour (thats as long as i've tried it so far) but it starts overheating about 20 miles down the road, almost as if something is expanding in the radiator maybe, although it has good flow into the tank.

firefighter89 I had considered doing that, but believe it or not, its hard to come by a donor jeep in my area, most are either still daily drivers, or have already been scavenged for spare parts, so i would more than likely have to go with new parts, which will cost a lot more to do, though this tank has gotten close to exploding as well.

Is it normal for this year of cherokee to have the MPFI? or did someone do an engine swap with a newer block and intake and leave everything else?
jnslick is offline   Reply With Quote
Old 09-08-2011, 02:49 AM   #8
CF Veteran
 
Slick761's Avatar
 
Join Date: Jun 2011
Location: Nor-Cal
Posts: 2,857

View Slick761's Photo Album My Photos
1990 Cherokee
Default

Quote:
Originally Posted by jnslick
Slick761 2, what all info would you need? i suppose the fuel pump is in good shape, it sounds strong when i hit the key. 3, i'd rather get a non tilt column and not have to worry about it getting loose again, also, i've already torn the lower sleeve off the column trying to get at the screws to tighten the tilt section, so its a matter of aesthetics now as well. 5, i'm not sure, i haven't gotten around to changing it yet, but its full, and the pressure varies on its own, it doesn't seem to be related to the RPMs at all. also, i'm sure running a higher octane would help the ticking as well.

Firestorm500 I suppose its just a habit i've gained from my experience with other vehicles that had carburetors, i almost can't help but feather and hold the throttle. i know jeeps are good vehicles, i have seen them go upwards of 500k miles and not miss a beat when they're taken care of...but this one wasn't, it had the guts run out of it many a time before i got my hands on it.

DFlintstone When its over 70 degrees outside, it only overheats when i'm cruising down the road, it will sit and idle at cool temps for at least an hour (thats as long as i've tried it so far) but it starts overheating about 20 miles down the road, almost as if something is expanding in the radiator maybe, although it has good flow into the tank.

firefighter89 I had considered doing that, but believe it or not, its hard to come by a donor jeep in my area, most are either still daily drivers, or have already been scavenged for spare parts, so i would more than likely have to go with new parts, which will cost a lot more to do, though this tank has gotten close to exploding as well.

Is it normal for this year of cherokee to have the MPFI? or did someone do an engine swap with a newer block and intake and leave everything else?
Mpfi is normal. Higher octane won't help ticking, there are a lot of misconceptions about higher octane gas. If its pinging try the knock sensor on the side of the block. Fuel pumps in these sometimes go intermittent.... on the column I would use loctite, the write up in technical write up section walks you through t. If you can't find a donor jeep and you really want a non tilt column start checking.g online junkyards that ship. If it isn't the pump it could be egr or map. Also its always a good idea to clean and polish all grounds. If you have a multimeter use this http://www.lunghd.com/Tech_Articles/...iagnostics.htm and check your sensors. The egr solenoid may be acting up. Also be sure your charging system is in top shape. On the cooling yes you could convert to an open system but I find when properly maintained the closed system works well. Good luck.
__________________
Chillin on a dirt road
Slick761 is offline   Reply With Quote
Old 09-08-2011, 04:36 AM   #9
Seasoned Member
 
Mendax13's Avatar
 
Join Date: Jul 2011
Location: New Cumberland, PA
Posts: 488

View Mendax13's Photo Album My Photos
1995 Cherokee
Default

a common problem ive heard about and i believe has happened to my jeep a few years back before i got it was the radiator gets clogged with a sludgy silt or something. idk what did that. but it weve had alot of radiator problems so maybe isolated incident. just a possibility i suppose especially since its 21 years old.

side note. : theyre not probems, it's personality. =)
__________________
Mendax13 is offline   Reply With Quote
Old 09-08-2011, 05:10 AM   #10
CF Veteran
 
JeepCoMJ's Avatar
 
Join Date: Nov 2008
Posts: 2,000

View JeepCoMJ's Photo Album My Photos
1987 Cherokee
Send a message via AIM to JeepCoMJ
Default

The overheating is either because of a bad coolant reservoir/cap (unlikely, because it is a closed cooling system, and that would cause a leak), or because you have an air pocket in the head.

To rectify this, park the vehicle on a hill, with the nose facing down hill, and wait until the vehicle has cooled down.
Remove the coolant sensor, which is located at the driver's rear corner of the head, right next to the valve cover. be prepared to put it right back in, and be sure your coolant reservoir is full. doing this will cause the air pocket to bleed out.


The occasional dying sounds to me like a sensor issue. Clean the IAC (Idle Air Control), which is a tube shaped sensor located on the throttle body.
Also try adjusting the TPS (Throttle Position Sensor), which is also located on the throttle body.

Lastly, check the CPS connector (Crankshaft Position Sensor, located directly behind the intake manifold), also check the CPS wire that runs down to the actual sensor, which is located on the bell housing on the drivers side. make sure it's not burnt or melted.
The CPS is also a known issue to cause slow starts and intermittent dying when it gets old and doesn't have proper resistance (continuity) in the wires and sensor itself anymore.


I don't know why you would want to switch a tilt column for a non-tilt, seeing as you can position it in the same spot a non-tilt would be in. If it's because it wobbles, they're fairly simple to repair, and it only costs around $30 in tools and a bit of loc-tite to fix. Look around here using the search feature to find out how to rebuild the column, or google "gm saginaw tilt column".


The ticking sounds to me like loose torque converter bolts. Easy fix
1. Remove inspection cover (2x18mm bolts with nuts, 2x13mm bolts)
2. Have someone use a breaker bar with a short well 19mm to turn the harmonic balancer (big pulley on front of motor that's mounted directly to the crankshaft) back and forth, while you look up into the bell housing at the bolts that are on the flex plate.

3. If loose, remove the torque converter bolts one at a time, immediately reinstalling after applying loc-tite to each one. There are 4 of them, and they are 15mm. you will need a second hand for this, to have someone turn the harmonic balancer thus turning the flex plate so that you can get to each of the torque converter bolts.


The front end sway sounds like a bad track bar, accompanied by the steering stabilizer not being bolted in properly, and (if my assumption about your loose column is correct) a loose steering column.

Good luck, pm me if you need more help...I can walk you through some of this via phone if you need since I'm off work with injury at the moment.

-Pat
__________________
Project 3800
1986 MJ - 3800 camaro powered, 5 speed 4wd
Utility MJ
1987 Comanche 4.0 w/ .030 bore, cam, '01 intake, borla header, 62mmTB. auto, full H.O. '99 conversion, 4" lift, d30/d44, 3.55's, 31x10.50 dayton timberline a/t's
JeepCoMJ is offline   Reply With Quote
Old 09-08-2011, 12:27 PM   #11
Newbie
 
jnslick's Avatar
 
Join Date: Sep 2011
Location: Ohio
Posts: 14

View jnslick's Photo Album My Photos
1990 Cherokee
Default

here's a couple pictures, just an idea of what i'm dealing with, the picture of the suspension is what i'm wondering about, whether its causing the sway, and the picture of the engine, well thats just to see if everything looks normal under there. also, here's a video,http://youtu.be/WEs8Gtxi4LA i just started it when i took this video, it sat all night so i know its cool, and you can hear another one of the ticks i just noticed, but i think its just an exhaust leak...? i don't really have the time to get into anything else right now, but i'll get a driving video on my way to work this afternoon so i can better explain the ticking/knocking under load.
Attached Thumbnails
1990 XJ, 4.0 4x4, got a few problems.-dscf0106.jpg   1990 XJ, 4.0 4x4, got a few problems.-dscf0107.jpg   1990 XJ, 4.0 4x4, got a few problems.-dscf0105.jpg   1990 XJ, 4.0 4x4, got a few problems.-dscf0104.jpg  
__________________
It is what it is.
jnslick is offline   Reply With Quote
Old 09-09-2011, 01:10 AM   #12
CF Veteran
 
tornprince's Avatar
 
Join Date: Apr 2011
Location: ellington, missouri
Posts: 1,291

View tornprince's Photo Album My Photos
1990 Cherokee
Send a message via Yahoo to tornprince
Default

i don't know much but, the second pic, thats suppose to be connected aint it? i mean, i have the exzact same year and model as that one, and mines connected. not very well, feels as if its gonna roll if i drive over a gnat.
alot cleaner than mine is under the body and hood.
__________________
my jeep doesn't get "stuck", just temporarily stopped.
tornprince is offline   Reply With Quote
Old 09-09-2011, 01:14 AM   #13
CF Veteran
 
Slick761's Avatar
 
Join Date: Jun 2011
Location: Nor-Cal
Posts: 2,857

View Slick761's Photo Album My Photos
1990 Cherokee
Default

Quote:
Originally Posted by tornprince
i don't know much but, the second pic, thats suppose to be connected aint it? i mean, i have the exzact same year and model as that one, and mines connected. not very well, feels as if its gonna roll if i drive over a gnat.
alot cleaner than mine is under the body and hood.
That's the sway bar, yes it should be connected. If you're gonna get new end links might as well get discos.
__________________
Chillin on a dirt road
Slick761 is offline   Reply With Quote
Old 09-09-2011, 01:40 AM   #14
Newbie
 
jnslick's Avatar
 
Join Date: Sep 2011
Location: Ohio
Posts: 14

View jnslick's Photo Album My Photos
1990 Cherokee
Default

Quote:
Originally Posted by Slick761 View Post
That's the sway bar, yes it should be connected. If you're gonna get new end links might as well get discos.
Discos?
__________________
It is what it is.
jnslick is offline   Reply With Quote
Old 09-09-2011, 01:42 AM   #15
Newbie
 
jnslick's Avatar
 
Join Date: Sep 2011
Location: Ohio
Posts: 14

View jnslick's Photo Album My Photos
1990 Cherokee
Default

Quote:
Originally Posted by tornprince View Post
i don't know much but, the second pic, thats suppose to be connected aint it? i mean, i have the exzact same year and model as that one, and mines connected. not very well, feels as if its gonna roll if i drive over a gnat.
alot cleaner than mine is under the body and hood.
under the hood didn't look that good when i got it, i've taken a power washer to it to get all the oil off the block, it was caked on there about 1/8in thick all over
__________________
It is what it is.
jnslick is offline   Reply With Quote
Old 09-09-2011, 01:42 AM
 
 
 
submit to reddit
Reply

Tags
1990 cherokee xj, overheating, stabilizer, stalls out, steering column
Go Back   Jeep Cherokee Forum > Technical Discussion > OEM 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
1990 cherokee smog problems xXWhiteXjJeepXx OEM Cherokee Tech 34 06-05-2013 07:02 PM
1990 XJ, Fuel problems. Yocornflake OEM Cherokee Tech 2 08-12-2011 12:33 PM
1990 jeep cherokee shifting problems gates_77_gmc OEM Cherokee Tech 3 02-15-2011 07:37 AM
1990 4.0 engine problems please help 90xj,99xj,92mj OEM Cherokee Tech 9 09-30-2010 07:26 PM
1990 cherokee problems cherokee77 OEM Cherokee Tech 30 03-06-2010 03:23 PM


All times are GMT -5. The time now is 06:56 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
This site is in no way affiliated with Jeep or Chrysler.

Emails Backup