20 Most Recent 2012 Jeep Grand Cherokee - Page 4 Questions & Answers

while moving , ID say the steering column rear end called the clock spring is bad what can it be,well. not the #4in my list ;1: horn relay bad. 2: clock spring bad., 3: horn switch rear of clock spring bad. 4: BCM failure. 5: A KEY FOB BATTERY NOW LOW AND GOES NUTS AND TRIES TO GO TO PANIC BUTTON MODE. THEN ABORTS 6: ALTERNATOR DEAD AND MAIN BATTERY FALLS TO 10VDC AND any odd thing can happen beeps but for sure lots more. to do any OF THAT the AIR BAGS (srs) MUST BE DEFEATED FIRST AT PROPER FUSES, AND PER THE SHOP MANUAL

what year what engine both matter idle air controllers , 1 or 2 of them based on years, engine./

which engine it does not have 2 , I hope . the service manual covers that, buy it or rent it online for $20

This might be a long shot but check behind your glove Box and see if you have a cabin air filter

i got a 94 and mine did the same thing. turns out it had a bad fuel pump relay and a bad asd relay. i switched the horn and asd relays with them and it worked like a charm. give it a try, it cost nothing. all those relays are the same

try adjusting the throttle pressure cable located at the throttle body. push in the clip that holds it, remove floor mat on drivers side and fully depress the gas pedal (engine off of course) then release the pedal. the clip should go back to lock position. all this is on the assumption you have the Asian warner aw4 transmission but the procedure is similar for the chrysler trans also

Turn the 4 way switch on and off several times. Sometimes the connection that goes from turn signals and emergency lights get dirty.

If youve replaced all those parts start by checking everything is mounted correctly. If it is even a tiny amount out it will cause issues. Next Re-Bleed the brake system starting with the caliper furthest away from the master cylinder and do the nearest one Last.

Speak to your Jeep dealership. It would be a bad idea to explain how to do it on a public forum for security reasons.

Fuel too lean in bank 1. Maybe it has an airleak or a faulty signal from and Lambda O2 sensor.

Sorry for your troubles having to deal with inoperable vehicle. You will to have diagnostic codes ran, it could be several different components. From what you said i would suspect fuel pump. I doubt that the crankshaft is broken, that is extremely rare. I am quite old and have never seen a broken crankshaft. Your vehicle will have to to repair shop.

Question edited for clarity. Cranking IS turning over. You are cranking but not firing, or starting, or running. If you haven't much pressure at the rail, your likely problem is not enough fuel pressure and the fuel pump needs replacing. One post here says you need 39 PSI and another says 49 PSI. What do you have? You need to test with a pressure gauge. https://www.google.com/search?q=1994+jeep+grand+cherokee+laredo+4.0+fuel+pressure+specs ..

Check all the fuses

moved you to JEEPS, from computers just sold mine, 2002, (sad I did 2008 stinks) first of all, in English, no engine size told, nor what country sold new, Jeeps are made all over the world now and for sure no the same (not engines or electrics, nor EFI) petrol or gasoline ?? later is USA name, but translaters lose that fact. pu j'ai de l'essence qui == gasoline or French Petrol>?>>>>>??? are you in Europe or france or in USA or canada speaking French. all that is good and fun sure. but cars are not the same on earth, for a fact. I can not look under your cars hood nor read your VIN. English answer + translated. Generic 100% On all our cars USA ,I spark dies , the PCM cuts fuel. yours did not so may be just flooding fuel engine. are all 4 spark plugs dripping raw fueL? ever replace the spark plug or are the 20 years old? 50k miles max is the rule , 2002 engines smoke so is less. on spark plugs life. and gapped correctly the owners manual on the car tells now to clear flooding (spark good) put throttle foot to the floor, WOT. turn key and crank and fall fuel injections are cut, and now tries to start. (5 seconds max) on starter spins. but fails, now repeat with no foot actions. see it start and run. now if not engine needs service. way 2 , new spark plugs and all 4 tested for live spark first. we then remove the fuel pump relay or fuse and crank engine over using test fuel in hand see scotty do that we love him here. https://youtu.be/064Ilsz8Fzg

https://repairpal.com/code-p1296-on-handheld-scanner-705

I got a 2007 jeep grand cherokee diesel and at times the service park assist will flash and the engine light will come on. a box forms around the gears on the display and it feels like it trannys slipping and its rough out of 1st gear. if you throw it in neutral then back to drive everything is fine again. After hours of research i found that you have to get your computer flashed. It if commom for many people and the dealership wont know what your talking about. so you have to lets them know!!!! else they have no clue

It would be more cheaper to buy a new car than to try and fix the car that is broken. Both the alternator and the voltage regulator need to be replaced for your car.

check and inspect blend /mode door[s]

check water level in radiator- can be low enough for no heat but engine still not overheat

Check the loom between the TCM and Engine Control Computer. There is no signal between them so a broken wire is expected or a crusty connector.