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Owns A Torsen
Joined: Mon Sep 18th, 2017
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Your fuel mileage is crap, it is running like crap, you have conflicting codes....
Did this happen all of the sudden?
My first thought was intake bolts, but your carb cleaner test would have caught that. It isn't clogged injectors or fuel pressure because to waste that much gas it has to be getting that much.
Have you tried the MAF sensor, take it off and clean the crap out of it.
Else I'm leaning toward wiring problems (not plug wires but the wires going to sensors and the ecu) or the ECU itself. May have taken on moisture rotting a couple components and get confused.
I'd look at it, possibly go to a junk yard and yank a computer from a similar 4.0 OBD1 vehicle (make sure the transmission matches, auto or manual).
Might want to grab a maf sensor too. Those things if they go bad or get too crudded up changes the whole attitude of the engine.
Keep at it, sounds like you have some experience at diagnosing stuff so you have to step slightly outside the box.
The timing chain on those are usually rock solid but a timing chain that slips a tooth would exhibit most of those symptoms. Not quite sure how one would check that easily. Do the easy stuff first!
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00 XLT 4WD RCSB 3.GO! Jalapeño
01 XLT 2WD RC Steppie 3.0 auto Silver
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