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Thanks for the input, bought carb cleaner and resprayed. I just discovered a 1.5-inch crack on the rubber pipe that directly connects to the TB - used electrical tape to temporarily seal it. Reset EFI fuse and will test drive again in a bit. Gas mileage sucks, still rough idle. TPS connection is OK.


This is your problem...

With a cracked pipe, unmetered air can enter the system... This causes the lean code.

The computer compensates.

Then, the crack seals temporarily... This creates a sudden rich condition. The rich code is set.

Get a new intake hose.

"A young man who does not have what it takes to perform military service is not likely to have what it takes to make a living." - John F. Kennedy

Proud owner of an 88 Montero (with a blown engine).