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Major Power Loss In My 1987 Trooper II

I recently was givien a 1987 Isuzu Trooper II. I was quite excited at first as it only had 89,000 miles on it and it came from North Carolina (so the body was in great shape). However... The vehicle has no power at all. When I am driving on level ground or down hill, I have a fair amount of acceleration and power, but as soon as I encounter even the smallest of an upward slope, the thing dies on me and I drop from 65 to 25 in less than 5 seconds, and I cannot get my RPMs over 3500 even when I floor the gas pedal. In fact, I there is no change in power output at all when I depress the gas pedal. Can anyone tell me what the probpem is, or what the solution is?? Any help or suggestions would greatly be appreciated. Please forward any and all responses either on this message board, or to my e-mail address: Thanks-- Seth Similar problem with a Chevy 04 trailblazer. Changed the fuel filter but that didnt help. Engine runs fine at idle but as with your Trooper it loses all power under load (as in accelerating or and sort of grade) Mine came upon me gradually. Suggesttions from a mechanic friend where the aforementioned fuel filter, fuel pump, oxygen sensor or MAPP sensor (although the MAPP sensor is a long-shot). We will try to check the codes to see if that tells us anything.

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  • yobo007
    yobo007 May 11, 2010

    What type of motor??? 2.3 or 2.6 4cyl.? Also what type of Trans? Auto or Standard? Also finally is it 4x4 or 2x4?


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You may have a plugged cataletic converter

Posted on Jul 07, 2008

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