Mitsubishi Montero & Montero Sport This sport utility vehicle offers more size than the other Mitsubishi SUVs, but manages to keep a sporty look and comfortable feel, unlike many larger SUVs.

Complete loss of power... what in the world!?

Old 01-06-2019, 11:48 AM
Junior Member
Thread Starter
Join Date: Jan 2019
Posts: 1
Question Complete loss of power... what in the world!?

Hi everyone, I have a '01 Montero Sport 3.5L (V6), 2WD. I recently started noticing a loss of power during acceleration... it progressively has worsened. Now, the truck is too slow to drive.

I loosened the catalytic converter (in case of clog), so the exhaust would freely flow... to no avail.

The truck had set up for over a decade. We replaced all rubber hosing from the gas tank, including filter. We do have positive fuel flow into the injectors.

I am completely lost as to what I should check next. Any tips or suggestions are greatly appreciated!!!
Old 01-07-2019, 10:12 AM
Senior Member
Join Date: Oct 2004
Location: Washington State
Posts: 1,311

Very obvious thing - check the air filter. After that, disconnect EGR control to see if it will change anything (EGR might be stuck). If still no luck, pull the life data from the system to see how everything is functioning. Hopefully there will be a clue there.
BTW, do you think it's the engine performance or transmission?
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