Question about 1998 Isuzu Trooper

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My 98 isuzu i just bought from a crooked dealer

My 98 isuzu i just bought from a crooked dealer ran fine till i got it home shortley after the check engine light popped on and the 4x4 light and check tranny and it vibrated . i the tranny diffs. transfer case all drained and (tranny)flushed and the tranny light went off but the others dint. now it wont shift into drive and stalls at every red light and stop sign rough idle if it does idle po916 po 102 po 101 and other code relating to misfire on 3 and 5 and lean on 1 and 2 it sounds like a suction noise from the back of the motor when it stalls you can hear a hissing like a air valve hissing or only when it stalls or you turn engine off the local parts store said it could be the ujoints and or the speed sensor in the tranny or the shift selnoid on the tranny. please help my lemon atleast be a bruised plum..........thank you

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My 98 isuzu tropper sometimes will not down shift back to first when i stop but if i put it in park and shut the vehicle off it will work fine . it will also work when i manually shift it .i dont know what it is , if its gonna need a tranny or if its electrical .

Posted on Mar 16, 2011

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Did you purchase the Isuzi 'as is' or is there any warranty? Some states require a 30 day warranty, just to prevent people from being ripped off. Bring it back to the dealer IMMEDIATELY if there is any warranty. Even if there isn't, I would return to complain and hopefully have them fix some of the several problems you now have. This most likely won't help, but file a complaint with your local BBB and state attorney general. The important lesson at this point is to never purchase a vehicle without 1st checking the reputation of the dealer, and without at least a 30 day warranty. If you can't get a 30 day warranty, don't buy it.
The suction noise you hear may just be a vacuum line that is disconnected. You will have to hunt around for it while someone turns the engine off (as that 's when it makes the noise). You can purchase a small extending adjustable mirror at a parts store to help look for the source of the noise in hard to see locations at the back of the motor. Try to find this 1st, as it may correct some of your current problems.
Misfire can be caused by the spark plugs, plug wires, coil, or injectors. Your description sounds like the vibrating didn't start until the check engine light came on, so I don't think you have issues with the 'u joints' as the parts store suggested. The vibrating is caused due to it running rough. Good luck.

Posted on Feb 08, 2010

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