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Category: Car
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Experience:  ASE Master Auto Technician for 5 years, ASE Refrigerant Handler, ASA, iATN
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1988 isuzu trooper: runs fine just a small rough idel

Customer Question

i have a 1988 isuzu trooper 4x4 2.6 engine. will not run with mass air sensor pluged in. when unpluged it runs fine just a small rough idel. is my mass air sensor bad? or what can be the problem.
Submitted: 5 years ago.
Category: Car
Expert:  CarQuestionGuy replied 5 years ago.
Thanks for asking your question on JustAnswer. My name is Steve and I'll do my best to answer your question.

This is usually a telltale sign that the sensor is bad. It could also be a problem in the wiring, but that is not as likely.

I would try cleaning it then inspecting the wiring very carefully first.