is the inhibitor switch has got something to do when it did not accelerate after a traffic stop while it is on drive shift and another instance while on a freeway doing a 70mph it suddenly looses
no,,, the inhibitor switch just prevents the car from being started in gear is all that it does
sounds more to me that your transmission is going out on you,, you need to take it to a reputable transmission shop and see what they say but im pretty sure that is whats going on,,, also you need to check the transmission fluid and make sure that its full, but if its not theres a problem as you should never lose transmission fluid other wise
I have a 2011 Montero GLS and experienced the same issue. Though I only experienced this issue from a full stop to about 20KPH. Have it checked with Diamond Motors 2 days ago and they immediately told me it's the Inhibitor Switch. Have it replaced for Php 5K parts and 2K labor. So far ok.
This issue is actually quite dangerous since it first happened to me when I am about to overtake a bus uphill. This should be covered by a recall with the replacement at Mitsubishi's expense.
even if its true that its the inhibitor switch and im not doubting it is ,, but if it is then I would still be suspect of that catalytic convertor, because as stated before that running rich will burn the catalytic converter up and you said its been running like this for years now
considering the cost of the parts and labor I would change the cat first as like I said im sure its bad by now anyways and it might be the only thing and not the switch but you should probably have the cat changed anyway
Looking for a Used Montero Sport in your area?
CarGurus has 324 nationwide Montero Sport listings starting at $2,259.
Search Mitsubishi Montero Sport Questions
Mitsubishi Montero Sport Experts