Question about 2001 Mitsubishi Montero Sport 4WD

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Shuddering uphill Hey I've got the exact same prob with mine. One thing I noticed was that it seemed to be a transmission problem. But I took it to a transmission shop and had them ride along to show them the prob. He said he felt it was the engine. Unfortunately I didn't have the cash to get the diagnostic check. One thing else, a transmission guy I trust told me to never do a flush. Change the fluid but never flush the tranny. I'm about to swap out the plugs/cables and possibly some O2 sensors (suggested by my neighbor). I'll check back to see what happens with your car.

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  • bugeater90 Jul 21, 2009

    Well the tank was/is usually full. It actually does the same thing regardless of fuel level. It will also shudder on flat runs but not as much.



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How full was the gas tank? Maybe the tank was low and gas sloshed away from fuel pump pick up tube. Try shifting out of overdrive when going up hills, you might be lugging the engine at too slow of speed ( running at too low of RPM's compared to where engine makes it's peak torque, mixed with it being a heavy SUV can cause chugging or shuddering).

Posted on Jul 21, 2009


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