Hi i have a 1993 isuzu 2.5 diesel since i bought it the fuel gauge ant temp gauge have not worked any help or suggestions would be great

I think gauges for this year model are all mechanical. The problem may be either with the gauges, the sensors, or both the gauges and the sensors. Just buy a sensor for your vehicle's model and install it. If it still does not work then you must buy the gauge as well. However, buying a sensor+gauge set is slightly more expensive that just finding used parts. So I suggest, just buy used gauges and sensors to fit your vehicle. Another option is to buy after market gauges and sensors, they are slightly less expensive than brand new original ones but you will have gauges sticking out of your dash.