Last post on Dec 05, 2013 at 7:03 AM
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#5048 of 5143 2004 Jeep GCL temp gauge high when heat is on
Jan 23, 2012 (6:53 am)
Our 2004 Jeep Grand Cherokee Laredo (V6) check engine light came on during our first cold spell about two weeks ago. Mechanic said he saw code for "heater failure" but kept it all day and it ran fine. Mechanic also said they checked it over and could not figure out why the light went on because it was running perfectly fine. All gauges were fine and no fluids leaking or low. Needed an inspection for NYS so I had to wait 30 miles and drove it 60 miles in a week with no problems. Had inspection done a week ago and it passed. Last week, noticed squeaky belt noise on idle at traffic stops a few times but chalked it up to extreme cold again as car ran fine. Today, put on heater and noticed a slight burning smell when I exited car. Got back in car five minutes later and noticed nothing leaking. Got back in car, turned on heat and noticed temp gauge just starting to creep from dead middle to slightly right but not higher. Turned off heat and it started to creep back down and stay left of middle. Now I am paranoid there is a problem. Does this sound all normal or am I correct in suspecting an issue?
#5049 of 5143 Re: 2004 Jeep GCL temp gauge high when heat is on [lijeepowner1]
Jan 24, 2012 (9:14 pm)
um yeah with the heater on that needle should NOT move! it is normal for it to do that when you run the a/c but not the heat, you need to have that looked at...and if he says its fine, slap him in the face and go to a new shop....
#5051 of 5143 93 grand cherokee mileage
Jan 28, 2012 (6:56 pm)
okay, so this will sound a little weird, but i'm gonna throw it out there anyway... i have '93 GC Laredo with the 4.0L engine and SelecTrac transmission, which i leave in 2WD 90% of the time, unless i'm off in the toolies. i bought the car in late 2007, and the first two years or so i had the car, it was getting something around 15mpg city, and 25-28 in freeway driving, but it idled real rough, stumbled, and sometimes stalled. the rough and stumble went away as soon as the throttle came off idle, and it ran fine as long as i wasn't stuck at a stoplight too long. anyway, i took it in in august of 2010 for repairs, they found a vacuum leak, which they fixed, and now the idle is much better - still not super smooth, but better. but my mileage now is down around 11-12 in city and 18-19 on the highway. my driving habits didn't change...
the fact that i was getting over 15 city/25 highway tells me the car is CAPABLE of that kind of performance. how would fixing a vacuum leak cause it to drop like that? more to the point, how can i get it back???
#5052 of 5143 Jeep Grand Cherokee 1997- Door locking problem.
Feb 01, 2012 (12:48 pm)
So i was givin a jeep to me from a friend last week, and been fixing this left and right on it. So my last problem that i cannot figure out to fix, is that my driver side door wont lock, (and the door actuator is dead i know i have to repalce but not worring about it now) it closes and stay closed but when i put the key into the door and turn it to lock it. it turns (but it bounces back a little bit, it doesn't feel it clicking when u make that full turn) but doesnt lock.. does anyone know of a DIY write up w/ photos plz if possiable. on how to fix this problem. or know what i need to replace to make this door once again lock.
#5053 of 5143 Re: 93 grand cherokee mileage [squirl033]
Feb 01, 2012 (1:43 pm)
The vacuum leak added more air to the engine creating a leaner air-fuel ratio. Result is better mileage but poor emissions. The rough idle was caused by the computer trying to adjust the emissions and not finding a setting, so it was doing a cha cha. I did the same thing on purpose to get mine to pass NJ emissions. Pulled a pair of vacuum lines for normal running and hooked them up to pass inspection.
#5054 of 5143 Re: 93 grand cherokee mileage [mikeyp53]
Feb 02, 2012 (9:14 pm)
that's a little like what i thought, but i never had any trouble getting it through emissions (though a leaner mixture usually helps). is there a way a shop or dealer can reprogram the computer to obtain better mileage? or do i just need to create an "artificial" vacuum leak to get that mileage again?
#5055 of 5143 Re: 93 grand cherokee mileage [squirl033]
Feb 03, 2012 (4:55 am)
A shop may or may not do it since it may be a violation. You can always ask. My inclination would be to pull a vacuum line again and try that for a while and see how the mileage and performance changes.
#5056 of 5143 Battery indicator drops when running Heat or Defrost
Feb 04, 2012 (8:14 pm)
Hello, first let me thank you for a place to ask a question. I have a 1996 Jeep Cherokee Country. I need some good advice because money is an issue, after just replacing a heater core and battery.
It has been sluggish to turn over, I thought perhaps because it was cold out.
I had my battery and alternator checked today. The Alternator was charging, but I had to replace the battery. It was old, so I thought nothing of it.
I started it tonight, and turned on the heat. When I am parked using heat it made the battery gauge drop a bit, while still parked I turned on defrost and it really dropped down to a little above 9. So I shut off the defrost, and drove- while driving I tried it again. It drops slightly below 14. Sometimes when i turn on defrost belt seems to squeak- if this matters. What is causing this? Is it safe? Any ideas?
#5057 of 5143 Re: Battery indicator drops when running Heat or Defrost [stevemarcellis]
Feb 05, 2012 (4:47 am)
A couple of ideas that may help, first of all if its cold and its sluggish to start, have you got the correct weight oil in the crankcase. That car is designed for 5W-20 oil. Oil gets thick when cold and will cause difficult starting. I have a 2011 Chrsler 200 and when it was 5 below zero, it was sluggish to start too. As far as the voltage drop, could be a few simple things. Are your battery connections clean and tight? They put in a new battery so was it done propely so that everything is tight? How are the battery cables? Any corrosion under the insulators will cause a draw. If it drops voltage with the heater on, could be a bad heater blower motor or you just need to oil the fan bearings. That sqeal you hear may be the fan bearings. Not unusual for that year of car to need a heater fan blower replaced. Hope this helps. None of these fixes are expensive.