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Discussion starter · #1 ·
Hi all...

Performed my first oil change on the Grand Cherokee today. The engine bay was FILTHY, so I used the leaf blower to get a lot of the dust and dirt off.

Quite a bit of it didn't want to come off, so I grabbed the hose and rinsed the bay down. Didn't use any pressure, or anything like that, but I am like 90% sure it resulted in some water impacting the throttle control.

I took the car for a spin and immediately after pulling out of my neighborhood, the car started lurching, went into limp mode and the dash was flipping out with the "Service Electronic Throttle Control" warning, along with the CEL. I turned it around and went back to the house.

Car is running ROUGH and the throttle seems to be possessed... keeps pulsing open, closed, etc...

What do I need to do here? start pulling everything apart at the throttle body and allow it to dry? Think I did any sort of damage to the unit and/or sensor?

Any and all help is very appreciated!
 
Get the OBD diagnostic code read, a ETC fault could be caused by a wide variety of things, only one being the throttle body. Parts stores usually read them for free, or sell relatively cheap scanners.

Check all electrical connections and grounds for looseness. Everything to fly by wire now days.
 
Discussion starter · #4 ·
Get the OBD diagnostic code read, a ETC fault could be caused by a wide variety of things, only one being the throttle body. Parts stores usually read them for free, or sell relatively cheap scanners.

Check all electrical connections and grounds for looseness. Everything to fly by wire now days.
Or it could have been caused by someone (me) being an idiot!

I pulled the air intake off and saw the problem immediately. Somehow, one of the paper towels I had been using fell into the intake piping and was stuck on the throttle plate! Thank God it got hung up there, or it could have been MUCH worse.

Car runs like it should, but I'll probably have to take it somewhere to clear the CEL (unless it turns itself off after so many miles?).
 
Most CELs clear after 3 or 4 ignition cycles, a few take 100 cycles.
 
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