Here's a weird one - can you guess what it was?

Some bent lever on the throttle body.

OK everyone, there were a lot of really good guesses (and most of them have happened to me at one time or another!)but here is what happened this time.

I took the big air intake hose off the top of the throttle body to spray some cleaner on it and found a big, square chunk of foam on top of the throttle plates. It turned out to be the filter from the inside of the air box that filters air coming back from the valve cover.

Obviously it was interfering with the movement of the throttle plate.

A bit of cleaning and some glue and everything was OK again.

Thanks for all the great suggestions though!

Jeff DeWitt

Jeff DeWitt wrote:

Well, of course I knew that*, I was waiting for you to tell us you were giving a new Grand Cherokee Limited 4x4 V8 to the first correct guess. You might as well go ahead and send me the GC anyway.....

I'll have the Grand Cherokee delivered as soon as the money from Nigeria arrives

Jeff DeWitt

XS11E wrote:

No doubt put there by rodents.

I want part credit!

Just FYI, but that air filter is to filter air going 'into' the valve cover....

I would be checking out the CCV system expecting to find a blocked tube from the rear of the valve cover to the intake. This is the other half of the circuit that is supposed to provide the suction for this.

Mike