Last post on Nov 27, 2013 at 8:36 AM
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Jeep Cherokee, SUV
#2477 of 2589 Overheating Question
May 26, 2009 (6:26 am)
My boyfriend and I are having a bit of an arguement that I would like someone to settle. I have a 1994 Jeep Cherokee with 237,000 miles on it. I have lovingly taken care of it for 10 years, but it is getting a little feeble. About 4 years ago I had to replace the entire cooling system (water pump, radiator, clutch fan, thermostat and housing and all the hose lines), I did it myself in the front yard, so I have an intimate knowledge of how it all works. Last summer I had some overheating issues and had to replace the clutch fan again and since everything has been fine.
Fine, until my boyfriend drove it for several hours coming home from vacation (OBX to Maryland). We were loaded to the roof and had two large kayaks on the top, one of the largest loads the Jeep has ever had to haul. My boyfriend likes to drive as fast as possible, so I'd say between 80 and 85 MPH, he also made it down shift to pass other vehicles at this speed. Needless to say, it got too hot. He says there is something still wrong with it. Is there, or is he expecting too much from a 1994 Cherokee? I usually drive it at about 65 MPH and never have any problems. Not even in stop and go traffic where the engine is not getting
#2478 of 2589 Re: Overheating Question [jeepgirl3]
May 26, 2009 (10:07 am)
he also made it down shift to pass other vehicles at this speed
Redlining is probably not a good idea!
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#2479 of 2589 Re: Overheating Question [jeepgirl3]
May 26, 2009 (3:19 pm)
my opinion,he was running her hard,and the extra load-along with climbing grades hard,made her get hot..
--did it hurt it?,or is it still running-the way you normally drive it?
-downshifting for power is better than "lugging" the engine..(from a old bus driver running the las vegas run many times)..saw many "city drivers" try todrive the desert grades in drive,while i had to downshift-and would burn up their motors!..
-downshifting isn't nesiserially bad,but watch the tackometer-and don't "redline"-especially an old,tired engine..you gotta be easy on old stuff-if you want it to last..it'd be like taking a old horse-loading it down,and expecting it to run the kentucky derby!
i agree with you..take it easy on old gear-if you want it to last!!
#2480 of 2589 Re: Overheating Question [jeepgirl3]
May 28, 2009 (1:06 am)
I have a 2001 Cherokee with 158,000 miles on it. Like you, I have tried to take good care of it. After taking such good care of yours, how did it feel to see it being brutalized by your boyfriend? Keep that dude out of your Jeep.
#2481 of 2589 2001 Jeep Cherokee Aniv Engine Idle Problems after Rebuil
Jun 01, 2009 (1:03 pm)
Hello...I am new to this group. I have a 2001 Jeep Cherokee 4.0 4X4. I just had the engine rebuilt by NAPA. The new engine is installed and connected. I started it up and it was idling rough. I noticed some vacuum leaks on the injectors so I replaced all of the O-Rings. That seemed to fix some of the problems. I checked the onboard computer and there are not error codes. The engine sounds great when you run in above 1000 RPM. It just when it idling is when it is rough. There are no air leaks. All of the sensors are connected. Before the engine died(before it was rebuilt) it ran and idles normally. Does anyone have an opinion?
#2482 of 2589 Re: 2001 Jeep Cherokee Aniv Engine Idle Problems after Rebuil [yeats66]
Jun 02, 2009 (6:37 am)
Still sounds like a vacuum leak of some sort.
#2483 of 2589 Re: 2001 Jeep Cherokee Aniv Engine Idle Problems after Rebuil [lildavidjax]
Jun 02, 2009 (5:26 pm)
I have triple checked numorous times...i thought there may be a leak on the manifold but there was not. Any other suggestions?
#2484 of 2589 Re: 2001 Jeep Cherokee Aniv Engine Idle Problems after Rebuil [yeats66]
Jun 02, 2009 (5:31 pm)
I suggest a quadruple check on the vacuum lines. Maybe one of the check valves on the valve cover is reversed?
Usually a rough idle will eventually be chased down to a vacuum line either partially connected, disconnected, or connected to the wrong place.
#2485 of 2589 AC on 1988 Jeep Cherokee 4.0 ltr
Jul 02, 2009 (4:29 pm)
I have a 1988 Cherokee that needs to have the AC charged, but I am calling around to find prices for this service and cant tell what kind of AC fluid I need. Does anyone know if it is R12 or 134A in this model?
Jul 06, 2009 (4:56 am)
A decal on your radiator support or the firewall should tell you what kind of refrigerant it takes. IF it's R12 it will need to be retrofitted for R134A. No way around it. It's law.