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Nassville 11-15-2010 04:07 AM

2005 Jeep Grand Cherokee (Electronic Throttle Control ) problem
Hey Guys Im new here and i wanted to ask you guys about a problem that bothers me alot, I have this 2005 Jeep Grand Cherokee Limited 5.7 liter V8, and the Electronic Throttle control light turns on if i accelerate, it bothers me a lot because the performance is reduced. I went to the dealer and they change almost everything related to this ETC light. They change the accelerator (still not working), they change the ETC sensor behind the engine (STILL NOT WORKING), and they change the gas pedal ( again it still light up). They told me the only solution for this problem is to change the whole computer system of the car!!!!:eek: It would be very expensive, and do you think its best to change the computer system or just leave the car as it is?
thanks guys!!!!

badmrbill 12-30-2011 09:34 AM

Re: 2005 Jeep Grand Cherokee (Electronic Throttle Control ) problem
I own a '05 Grand Cherokee limited 4X4 with the 5.7 Hemi, and resently I had the problem where my ETC and ESP lights would come on and I would lose throttle control. My Jeep would coast at about 15mph, I turned it off and on severl times until the lights went off and it would run fine for a mile or 2 and do it again.I did this for 25 miles until I got to my mechanics shop. (this happend a week before xmas) My mech replaced the throttle body which cost me w/parts & labor $245.00 my mech told me that the problem was still there and that the PCM and the throttle body were not comunicating correctly and that I would need to replace the PCM. he could get one from the dealership but it would cost $600.00 for the part and suggested that I see if I could find one cheaper. The lights still came on at times, but it now would coast at 45mph, I learned how to check my error codes (turn the key off and on 5 times quickly '04 to '12 models 3 times for older models) the codes I was getting were p2110,p2101 and p2001. I checked on ebay and found Auto computer exchange (954)963-9488, I called and they needed year, make, vin#, mileage and the # off of my PCN. (PCN is located on the passenger side fender wall and has 4 plugs in it) Im sure the PCM cost more than I paid but they honered the price that they had listed on ebay $143.20. I got it in 3 business days it's plug and play but I let my mech put it in anyways (just in case) labor cost me $60, I'm getting 3mpg more in town now (haven't had to get on the highway lately) great throttle response. I'm happy again. I hope this helps someone. P.S. I really dont think the throttle body needed to be replaced. "I'm just saying":thumbsup:

Scottina06 12-30-2011 10:04 AM

Re: 2005 Jeep Grand Cherokee (Electronic Throttle Control ) problem
you could try the ETC reset. Let me find the thread for you.

Scottina06 12-30-2011 10:07 AM

Re: 2005 Jeep Grand Cherokee (Electronic Throttle Control ) problem
try the reset described in this thread

Hemi Trev 06-05-2013 05:36 PM

Re: 2005 Jeep Grand Cherokee (Electronic Throttle Control ) problem
Thanks for the valuable info. My 2005 Grand Cherokee Hemi has just started doing exactly the same thing. You have probably save many hours and $$$ of heartache and mission!

blaffey55 06-09-2013 11:39 AM

Re: 2005 Jeep Grand Cherokee (Electronic Throttle Control ) problem
I was having a lot of issues with intermittent EAS/BAS lights and check engine light coming on. Until recently it never affected performance. Last week while on a roadtrip visiting family the motor began hitting very hard upon deceleration. I had a sinking feeling the tranny was the problem. My son-in-law is a mechanic and couldn't get a code as to what was actually happening. But he had a hunch...he replaced the throttle position sensor part #TPS333 (for my 2006 Jeep Grand Cherokee Limited) and that was it! No more dash panel more check engine light, and no more hard bumping as it downshifts! I wanted to share my story in case it helps any other Jeep Grand Cherokee owners who were at their wits end like I was.

bighungry 10-05-2013 07:55 PM

Not the way I wanted to celebrate the wk turning 100k miles. I have this dreaded p2100 code that won't go away constantly get throttle control light and esp off light. After reading around here and other forums I went ahead and got a throttle body from the stealership (only place near that had it in stock) installed it myself to no avail then I heard I had to have it calibrated by the dealer so out went another $110 for that no problem if it had to be done. Got the best gas mileage readings ever on the way home from the dealer only to have it go into limp mode and the light come back on about 30 min later. Dealer wants me to come back for diagnostics another $110 Monday. Had my step dad who knows his shit when it comes to cars tell me I will need to replace the accelerator pedal since that and the throttle body "communicate" with each other. I found it online and have no problem ordering it if it will solve the problem. Going on 3 days of pulling over and disconnecting my battery just to get home. I just fear I will replace the pedal and the issue will remain an I will end up at the dealer being told I need a pcm. Has anyone fixed this issue without having to go the pcm route? Sorry for the lengthy reply but I have racked my brain over this for long enough. I'm not an ase mechanic but in also not a dummy when it comes to cars. The word pcm however does worry me. Also I have a 2005 limited 5.7 wk.

Hemi Trev 10-19-2013 12:41 PM

Re: 2005 Jeep Grand Cherokee (Electronic Throttle Control ) problem

I have had similar problems. I would replace the pedal first and see what happens. Genrally, if the pcm is the problem, it will result in a whole load of random errors from all over -- my pcm gave errors for both A and E solenoids in the valve body, intermittent traction control errors, errors for the accelerator cable and pedal as well as the EGR valve. I changed the valve body, and the errors still came up --- then knew it was the pcm. Changed the pcm, and no more problems. If it is the pcm, you can get one as a plug n play (already coded) from 2005 Jeep Grand Cherokee PCM ECM ECU Engine Computer for less than $200.

Another thing to check is the black connector from the accelerator cable / pedal to the system. My connector was bad and resulted in intermittent shorting --- this will also throw out all sorts of errors and generally throw the vehicle into safe mode. This connector can be found inside the panel underneath the steering column.

bighungry 10-20-2013 05:08 PM

Thanks for the response I got a new pedal from rock auto a few days ago put it on and Wala the problem was gone an the jeep ran better then ever.... For about 4 days that is. Now I'm getting same issue and p2101 by itself. There are no other issues other then the etc light and esp light coming on and restricting my acceleration. I just rechecked the connector to the gas pedal and everything seems good there. Is there anything else I could check before having to take it back to the stealership? I have a new throttle body new gas pedal and same problem. Unless by the small chance I was lucky enough to get a bad throttle body from the dealer or a bad pedal assembly from rock auto. One last question does anyone know if I have to take to dealer to get computer synced up with the new gas pedal? I have left the battery disconnected and reset the pcm that way is that good enough? Thanks again for any and all help

bighungry 11-01-2013 03:40 PM

Problem solve for now. Well I had to bite the bullet and get the dealer to put in a new pcm only lucky thing about this whole mess was I received a 10% off coupon to use while it was there. Next issue that arises this bad boy is getting traded in.

Buck76Duster 07-23-2014 12:39 AM

Re: 2005 Jeep Grand Cherokee (Electronic Throttle Control ) problem
I also have an '05 WK that's going into Limp mode with the ETC and ESP lights coming on. MIL codes are P2118, P2110, and P2101. I use a bluetooth OBDII interface with the Android "Torq" app to monitor sensors. The only one that looks out of whack is the accelerator pedal position E which randomly drops to 0% for an instant and then goes to back 4.3% at idle. Pedal position D is rock solid at 9% at idle. I know the '05s were known to have wiring problems due to the harness routing. Could this be the source of what I'm seeing? I've wiggled the wire bundles at the pedal, PCM and throttle body without seeing any change in the behavior.

Timing advance jumps around from 9 degrees to 16 degrees erratically, but I'm told that could be the computer trying to compensate for bad inputs.

Before realizing I had access to so much data from the scan tool, I replaced the throttle body and the pedal. No luck there.

Any thoughts?

BAMA 11-04-2014 08:20 AM

Re: 2005 Jeep Grand Cherokee (Electronic Throttle Control ) problem
'05 WK Hemi with 90k miles and last week went into limp mode with the ETC error. I removed the throttle body and cleaned it up and this didn't help at all. Bit the bullet and spent $240 to get another ECM shipped next day and everything is good to go now. Easy plug and play to swap out the part. It will take some time for me to trust it though!

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