1991 Jeep Laredo

Engine Performance problem
1991 Jeep Laredo 4 cyl Four Wheel Drive Manual 153 00 miles

This laredo is turbo diesel and lacks power. I live in the country (Jamaica) and it stalls when going up hills. I am pretty good with diesel engines and has checked the fuel lines and filter which are ok. The Air system is clear and the turbo charger seems fine. Found a sensor (three wires attached) hanging just below the brake master cylinder. Dont know what it is or where it goes. Can u suggest anything. Thanks
July 13, 2010.

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