20 Most Recent 2005 Jeep Grand Cherokee - Page 4 Questions & Answers

Assuming the water is getting hot, (you could touch the hoses to make sure), then it is the controls, the vacuum the controls use, the vacuum servo that operates the valve, or the valve itself.
It is easiest to start with the last, because you can watch it move from the engine compartment, as someone else turns the temp switch high and low.

1. Disconnect and remove the negative battery.
   CAUTION After disconnecting the negative battery cable, wait 2 minutes for the driver-s/passenger-s air bag system capacitor to discharge before attempting to do any work around the steering column or instrument.
   
2. Drain the cooling system into a clean container for reuse.
3. Remove the instrument panel by performing the following procedure:
   1. Turn the steering wheel in the straight-ahead position.
   2. Remove the knee blocker from the instrument panel.
   3. Remove the steering column; do not remove the air bag module, the steering wheel or switches from the steering column.
   4. From under the driver-s side of the instrument panel, disconnect the following items:
      
      Instrument panel wiring harness connector from the 100-way wiring harness connector at the left side of the inner panel. Side window demister hose at the heater/air conditioning housing demister/defroster duct on the driver-s side.
      
   5. Remove the glove box.
   6. Reaching through the glove box opening, disconnect the following items:
      
      Two halves of the heater/air conditioning system vacuum harness connector. Instrument panel wiring harness connector from the heater/air conditioning system wiring harness connector. Instrument panel wiring harness connector from the passenger-s side air bag module wiring harness connector. Side window demister hose at the heater/air conditioning housing demister/defroster duct (passenger-s side). Two halves of the radio antenna coaxial cable connector. Two instrument panel wiring harness connectors from the passenger air bag ON/OFF switch wiring harness connector. Passenger-s side air bag ON/OFF switch wiring harness from the retainer clip on the plenum bracket that supports the heater/air conditioning housing just inboard of the fuse block module. Two lower passenger-s side air bag module bracket-to-dash panel nuts.
   7. Remove the upper cover from the instrument panel.
   8. Remove the 3 instrument panel-to-door hinge pillar screws.
   9. Remove the 4 upper instrument panel-to-dash nuts.
   10. Using an assistant, remove the instrument panel from the vehicle.


4. If equipped with air conditioning, discharge and recover the air conditioning system refrigerant.
5. Disconnect the refrigerant lines from the evaporator. Plug the refrigerant openings to prevent evaporation.
6. Disconnect the heater hoses from the heater core tubes.
7. Disconnect the heater/air conditioning system vacuum supply line connector from the T-fitting near the heater core tubes.
8. In the engine compartment, remove the 5 heater/air conditioning housing-to-chassis nuts. If necessary, loosen the battery hold-downs and reposition the battery for access.
9. Remove the cowl plenum drain tube from the heater/air conditioning housing stud; it-s located behind the cylinder head on the cowl.
10. From the bottom of the heater/air conditioning housing, remove the floor duct.
11. On the passenger side, remove the heater/air conditioning housing-to-plenum bracket screw.
12. Pull the heater/air conditioning housing down far enough to clear the defrost/demist and fresh air ducts, then, rearward far enough to clear the mounting studs and the evaporator drain tube to clear the dash panel holes.
13. Remove the heater/air conditioning housing assembly from the vehicle.
14. Remove the heater/air conditioning housing upper case.
15. Lift the heater core from the lower half of the heater/air conditioning housing.
    

post, 2, why not just add comments to the first and not nag. again, the book is here and if car is USA car, (IS IT) then open hood look up, see that big sticker there, and a vacuum map. the book covers whole car,every inch of it. for sure vac. if something wrong, that needs diagnosis, with that we need lots of facts and tests. we have no idea what you did, to it. http://www.morris4x4center.com/knowledge-base/index.htm?utm_source=cj#service

hello mark what jeep, in what country. USA>? what engine, vacuum of what, all engine vacuum all smog or just HVAC vacuum controls. or EVAP systems. try to ask a specific area, or tell reason for asking (win/win) there. if in the USA, the vacuum of the engine is on the hood sticker open hood look up? see that? its also in the SM and posted here, over 300 times now, on usa spec. WK click WK here. see that ,? its real the real deal, a real jeep free book. posted vast times now...... endless. search much.? http://www.morris4x4center.com/knowledge-base/index.htm?utm_source=cj#service btw you will have to read all chapter to get that answer engine hvac emissions. or load it up, and click Adobe search, for VACUUM yes, its even searchable.... amazing as that is... now lets read page 3, in the SM on usa cars that page says (by law) (under hood, look up)under. The VECI label(s) contain the following: ² Engine family and displacement ² Evaporative family ² Emission control system schematic ² Certification application ² Spark plug and gap The label also contains an engine vacuum schematic. There are unique labels for vehicles built for sale in the state of California and the country of Canada. Canadian labels are written in both the English and French languages. These labels are permanently attached and cannot be removed without defacing information and destroying label.

running warm , what does that mean? tell us why you think its too warm. this is called engine overheating, there are 20 reasons. but there is(link) short list of symptoms, even water on the passengers toes. (core leaks) (on floor board well) when cold is the RAD full of coolant?????? (look here 1st AND DONT DRIVE IT) rad cap new,? then fresh thermostat, (they last 7 years, says the president of a factory that makeS them), so when it gets old the wax pellet inside goes wonky. some are slow to warm and others will not open fully and that causes it to be too hot. (others stick full open and run cold) 3 failure modes !!! the thermostat regulates the temperature, at about 180F. I use and IR gun (a tool) to see real temps. here is a nice list of 27 , evidences. http://jeepdied.com/overheated/overheated%20101.html with simple tests and simple clues, for each. first gather all evidence, then do tests based on what you saw. saves time, and lots of cash.

What is the problem with your jeeep, other then the code ?

If you want to DiY, get an OBD code reader that'l connect to a smartphone. I use one with my two Mopars and it's great for pulling diagnostic codes (and recording GPS tracks). The brakes, electronic 4WD and traction control (wavy lines) are all critical safety systems; if you don't pull the codes yourself then get it to a good mechanic as soon as you can.

REDUX, poster thinks its to long for complex cars.what joke?, it's complex to you, sure,.and guess what seem "over your mechanics" pay grade too. LOL !!!!!first off your post lacks all key facts on car.ill tick them off:1: got 4wd axle up front,???????????2: working with no scan tool,if yes where are your scan data?3: working with no FSM book I sent you one for free.4: IS CAR THE nag1 TRANS, OR 545RFE.?????THEY ARE NOT THE SAME, SURE IN A SIMPLE BLOCK DIAGRAM, KINDA SAME. but are not, the NAG is a Mercedes box. and has its own TCM. (like and add on it is) the run diffent monitors and error codes.so..... no joy guessing this... ever.you do now the side if the box has a tag and tells you what you bought right?5: are you in USA or Europe. if you drove in to a shop here wed know that, right? (omg, its usa VIN)6: what is your VIN number, ?7: does the shift box, match front axle, seems not but you are vague here.8: what does "go out if gear" mean?a: flares. (aka false neutrals, "DISCONNECTED"b; down shifts to 1st when it should not?C; goes to limphome mode, oops look at scan tool it tells you if it did.! errors to the max, sure.d: upshifts to wrong gear overloading engine.9: did you sCAN THE PCM while driving to see what errors you get when it messes up.??? bingo.?10: does the transmission ever do any thing right under any conditions, pretend helper cant drive your car,... win/win.to be fair, a hacked car is not easy for any one.done many, I learned at tender age , not to assume anything, once the wild humans muck things up.expect anything and make the day more easy.win.redux 1. shorter but the only real short answers are.get car fixed at the dealer (fat wallet fix)or any real ASE shop.short and sweet. and I'm sure is old hat to you.free;WK http://www.morris4x4center.com/knowledge-base/index.htm?utm_source=cj#serviceRTMread : fsm pages. on..."During the road test, was there no 2nd gear and no 4th gear, but 3rd gear (limp-in) was OK?"more on 545"The hydraulic control system design (without electronic assist) provides the transmission with PARK, REVERSE,NEUTRAL, SECOND, and THIRD gears, based solely on driver shift lever selection. This design allows the vehicleto be driven (in “limp-in” mode) in the event of a electronic control system failure, or a situation that the TransmissionControl Module (TCM) recognizes as potentially damaging to the transmission.The TCM also performs certain self-diagnostic functions and provides comprehensive information (sensor data,DTC’s, etc.) which is helpful in proper diagnosis and repair. This information can be viewed with the DRBT scantool."i bet you dont even consider limp-in modes.right>?

I have no idea at all what emerg. dash lamps means? try to be more clear WHAT glows. exactly, or flashes,... do the out size blinker, haz lamps blink.? do any outside lamps stick on? does car run,? or is it just the park lamps stuck on,? dash illumination back ground lamps and or outside park lamps on.???? yes there are relays that can stick on, but I have no clear set of symptoms. ______________as a guide to the complexity--------- ILL GUESS HAZards stuck on.... lacking clear questions. are you in USA, with a USA car, and not say in UK? all cars are problems, all machines, are. and 100x that on complex machines like ours. Americans love complex cars, the complain when it takes a NASA engineer to fix it. sigh... (my fav. quote from buddy ASE) You told what don't work (not really) and failed to say what does work is the car running, and drives even at night, ok,'? sigh. infamous. sure all failures are infamous, not one is fun. sure. have you cycled the flasher switch off/ on/off say 3 times for luck? with all electrics, here is all solutions. 1: check fuse first. the ones that look ok, can be bad.(called hair line cracks, that humans cant see,or just out view deeper) 2: we then make sure the battery charged, 12.6v or more rested. after all the electronics will not run right , with too low battery. if the head lights are bright and car runs, down road the battery mostly ok,. (but not said) 3: so we arrive at SCAN it, posted this 10000 times. and not one ever did. it. and guess what It will report VAST numbers of errors if you just look. even tell you things stuck on. lets review the system the emg lights must work with car engine bad. and keys missing. its a law that. so there is a computer here that monitors that switch 24/7 to see if you push it. I have a 2010 so have all books on WK car. so can you if you read this free page. http://www.morris4x4center.com/knowledge-base/index.htm?utm_source=cj#service What is that brain(computer, or processor in a box.) its called the. MIP , module Integrated Power, and others... The Hazard switch sends a signal to the SCM when it is turned on. this is the Steering control Module. This module is attached to the CAN net work bus. this SCM sees the switch close and sends a command out onto the network telling all other computers to go to haz mode. the cluster HEARS this command and flashes HAZ lamps in same. does iT? the the MIP hears this command and flashes all out side blinker bulbs. if any computer in this chain of events sees errors of any kind I bet it does. it sets codes, called DTC and any shop , any obd2 scan tool on earth can read them. you only need to SCAN it. scan it, scan it , next time post photos of lamps that fail. or act oddly. be the first ever to do that, and be amazing....

older post this is Full time system. you shifted to neutral in the transfer case, NV140/245

cluster dead, and warnings in the cluster are dead. so does car drive perfectly in the day? yes.' now. if all things work but one thing, we check fuses first. all cars for 100 years same deal. crackle from radio. ok. this is the 05 GC and wiring is very complex. I have 2010. surely you can tell what works an not. and matters big time. I say get it serviced, like the 99.9% do. unless you can post full set of symptoms.

You can check the plugs on the bottom of the TIPM/fuse panel for corrosion. If none found, suspect the fuse panel. I replaced a lot of them this year. 05 and up. All Chrysler products.

Have to remove the inner door panel,to see the problemMost likely a broken window regulator

jack the front end up as high as you can and let it run, works most of the time. If thats dosnt work theres a coolant vacumn fill tool you can use. Could also be the blender door coinsidently got stuck at the same time you installed the core

Do you have a check engine light on and flashing? Have you run the OBD2 fault code test?

It's in the engine compartment IOD#2. It's a black module with two fuses in it. Take that module off and replace the 20 AMP one.

Visit the on-line store, know as reliable-store, they have the repair manuals. I'm sure you will get the solution of your problem. 2005 Jeep Grand Cherokee Service Repair Manual INSTANT DOWNLOAD