Last post on Nov 27, 2013 at 8:36 AM
You are in the Jeep Cherokee and Jeep Grand Cherokee
What is this discussion about?
Jeep Cherokee, SUV
#1521 of 2589 Re: Overheating Jeep Cherokee 1990 [usalbert]
Jul 06, 2005 (8:45 am)
I have a '90 2dr. Is your system closed pressure system? I'm pretty sure it is.
Make sure the radiator cap is on tight and leave it alone.
Get a large bottle, like a windshield washer fluid bottle.
Cut the bottom out.
Turn the bottle upside down into the reservoir bottle of your jeep.
Fill the reservoir up with antifreeze (while using the washer fluid bottle).
Get someone to start the motor.
The motor will suck the antifreeze in so KEEP THE ANTIFREEZE UP.
The motor will get up to temp and suck the antifreeze in, having the fluid bottle filled with antifreeze will keep from getting air pockets in the block.
This is going to take some time and a lot of patience.
Do this until the thermostat maintains running temp, 190-210 depending on thermostat.
Once you maintain temp, put the reservoir bottle cap on tightly.
Don't worry if the bottle expands, the cap will releave any pressure and then it will seal. DON'T OPEN THE RESERVOIR CAP UNLESS THE BLOCK IS COMPLETELY COOL!! Opening cap will make you loose it's pressure (pressure system, get it)
The next morning, after the block is cool, check the level of antifreeze. If it's still low, add some and put cap back on.
NEVER ADD COOLANT WHILE BLOCK IS HOT OR IT WILL ALL KICK BACK OUT THROUGH THE CAP LATER (it sucks I know, I had an over heating problem for almost 3 years before I did this)
What happens is for one reason or another, air gets in the line or block. Once it's trapped in the block, it's very hard to get rid of.
In the case of my '90, I had a hose leak. When I replaced the hose, it got air in the system. I replaced the thermostat with a 185 degree, new water pump, new hoses, new bottle, new cap, etc etc. Nothing helped. Took it to TWO jeep dealerships and almost a $1000 later, same problem. I finally found a mechanic who was very familiar with the issue and showed me what i described to you above.
He solved the problem the first time!!! I was amazed, shocked, and pissed off at those "5-Star" dealerships.
Once you get that system straight, don't ever let anyone take that bottle cap off ever. Only you take the cap off and only take it off when it's cool.
Something else happened to my '90, my radiator went bad. The plastic neck on the upper hose cracked and broke completely off!!! What a mess. That pressure system blew off the coolant out. It happened on the interstate, by the time I made it to the shoulder, all the coolant was gone. All gone! I had to buy a new radiator of course. I found a place on line, radiatorbarn.com. I bought (get this) a ALL metal, 3 row (oem is 2 row) for less than a replacement from Advance or Napa. It was a direct fit, no mods. It costs $140 delivered. So, if you ever have that issue, check it out.
Hope I helped. I got on here to ask about a problem I'm having with my '99 XJ.
I'm having a metal clanking sound from my passenger front hub. Everything is tight. When I turn sharp, it acts like it's in four wheel drive even though it isn't.
Any help on that?
#1522 of 2589 1999 Cherokee Front Passenger Hub Clanking Noise
Jul 06, 2005 (8:50 am)
I'm having a metal clanking noise in the front passenger hub.
I notice it most when I hit bumps of course.
Something else I notice is that when I turn sharp, it feels like the front tires slip, almost as if it's in 4 wheel drive, but it's not.
I looked for joint problems, anything leaking or rubbing, but no sign.
It's getting worse and I'm afraid it will leave me stranded.
Anyone had this issue?
#1523 of 2589 Re: Questions about new Jeep Purchase... [jeepandy]
Jul 06, 2005 (12:52 pm)
1. Yes, the mileage does goes up as the vehicle is towed.
2. Mileage depends on many factors. What's your driving style? Does it have the factory size tires on it? Has it been lifted? What's the axle ratios? Make sure none of the brakes are dragging to start. I have a completely stock '01 XJ with 70k miles. My normal daily commute covers roughly 85 miles with about 75% being open highway using cruise control. I usually get between 19.5 and 21 mpg.
3. Jump over to the Jeep Wrangler thread. Ask a fella with the screen name of "tsjay". He can tell you how to get the build sheet for your XJ.
#1524 of 2589 Spark plug upgrade on a 99XL 4.0 Q's?
Jul 06, 2005 (9:03 pm)
My Jeep only mechanic. Says changing to a different spark plug other than the factory champion plug will cause the check engine light to go off, and potentionaly cause other problems? ? I've had 3 sets of plugs, in 10K, most likely do to a REALLY bad fuel pump ( Just fully replaced ), and to much combustion chamber cleaner. I have always used Split Fires, or other high end plugs on other vehicles. Is what he says true? I would like to get longer life, performace, and gas milage. With out any check engin problems etc? Has any had any success?
#1525 of 2589 Re: Overheating Jeep Cherokee 1990 [worleyguy]
Jul 07, 2005 (10:53 am)
ThanK You very much! my overheating problem finally is fixed! now! my turn light signal and my ac are no working! cero, nada, there may be losse wire or something! do you now anything about this?
#1526 of 2589 Possible purchase of 2001 jeep cherokee sport..any comments?
Jul 07, 2005 (12:26 pm)
I'm about to purchase a 2001 jeep cherokee sport 6 cyl, 4wd with auto tran. It has about 60k for mileage. Having never owned a jeep before, my question is the reliabilty of these vehicles. Also what should I be aware of for previous problems with this make and model from 2001?
#1527 of 2589 Re: Spark plug upgrade on a 99XL 4.0 Q's? [thorsnake]
Jul 07, 2005 (4:41 pm)
Spark plugs causing the SES light to come on????? Come on. The only way that I can see that happening is if you install literally the WRONG plugs. Ones that may be too cold, or hot, short, long, wrong seating surface, etc.....
If anyone here has first hand experience with this, I'd love to hear it.
#1528 of 2589 Re: Possible purchase of 2001 jeep cherokee sport..any comments? [bripam]
Jul 07, 2005 (4:51 pm)
That's exactly what I have. I bought my first Jeep, a '95 Wrangler, back in September of '03. It was nothing more than a toy for me as I offroad it. Well, I fell in love with it and the Jeep bug bit. Now I have my '01 Cherokee Sport. It's my daily driver. It had 60k miles on it back in February, now has nearly 71k miles. I bought it for three reasons:
1. I completely understand the "Jeep Thing"
2. I love the classic lines of the Cherokee. Most people can't tell a '91 from an '01. Since they didn't change much, parts are super easy to find.
3. That 4.0L engine is absolutely bullet-proof. I have many Jeep friends that have well over 200k miles on their 4.0's. My wife works with a person that has an older Cherokee, not sure what year, that has just over 275k miles on it.
Since '01 was the last year the Cherokee was produced, many of the bugs had been long since worked out. I honestly am not aware of any particular downfall of this model. Infact, with me getting around 20 mpg out of mine, the only thing I can think of that even could be a turn-off is its truck like ride and handling. But then of course, I've always had trucks, so it's no big deal to me.
My wife also fell in love with Jeeps. Last month my wife traded her Windstar for a Grand Cherokee. Folks, I'm in Jeep heaven!!!!
#1529 of 2589 Re: Questions about new Jeep Purchase... [mullins87]
Jul 07, 2005 (5:46 pm)
mullins87... Thanks for the info about my new Jeep. To answer your questions: about my driving style... I drive very carefully and try to get the best mpg I can. The tires are 235/75 R 15 and I believe standard size is 215/75 R 15. It has not been lifted, and I don't know what the axle ratio is. Haven't noticed any dragging brakes. I have put a bottle of Techron in the gas tank to clean the injectors so maybe the mpg will go up. We made a quick trip of about 150 miles yesterday and used less than 1/2 tank of gas.
Is there a way to change the timing (maybe advance a little?) to get better mpg? I did this on a '74 Vega that I once owned and it got 34 mpg on the highway.
#1530 of 2589 Re: Questions about new Jeep Purchase... [jeepandy]
Jul 08, 2005 (6:36 am)
With regard to your MPG question... I get around 17 city, 22 hwy (I drive conservatively). When my (lead foot) son uses my '99 4x4 XJ. He gets 15 city. I run my stock tire size at 36 psi all around. This helps.