96 Disco - in need of some major help troubleshooting
#11
My bad - the air temp sensor will be telling the ECU some wild tale about how cold or hot it is, and screwing with the fuel air mixture. Swap with new or one from salvage or dismantler. It should show up as IAT (Intake Air Temp) on a data reading scanner, so you could see if values were anywhere reasonable. Auto parts store should connect scanner for free.
#12
#14
Just unplugged mine, the scanner thinks it is -40F when the sensor is unplugged (which would equal open, or broken wires). ECU would adjust mixture and other things accordingly. So a data reading scanner will tell you if sensor is bad. Does not make truck rev high at idle when unplugged.
Could extract IAT sensor and let it hang in the engine bay, like guys do that have those cone air filters. Then you could pour water on it or hair dryer it to see temp change.
Could extract IAT sensor and let it hang in the engine bay, like guys do that have those cone air filters. Then you could pour water on it or hair dryer it to see temp change.
#15
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