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1999 Ford Explorer Throttle Body Carbon

I have a 99 Explorer. The throttle body is constantly carboning up (around the butterfly) The big problem with it is that it is very hard to to press on the accelerator pedal. Every three weeks I take off the throttle body and clean it. I was all ready to buy a $300 throttle body when the thought occured to me that something else may be causing that problem. The engine does not run rough nor does it have blowby. This has been going on for a while I do the regular maintenance…plugs and wires. I have never changed the O2 sensors. Could this be the problem or do I need to dig deeper.

Thank you very much for your help!!!

You may very well need to replace the throttle body. If memory serves me correct, those were coated with teflon and had a message on them to not clean throttle body as that would destroy the teflon.

Yes, if you ever clean them (unless with a specifically safe throttle body cleaner), you’ll have to keep cleaning them all the time.