code PO113
#1
code PO113
hey guys, back with my 99 mazda b3000 troy lee edition. so last week, coming home from work, truck overheated because my belt slipped off the pulley. all was due to a bad idler pulley. however, got it replaced, everything back together, started it up, check engine light came on. code read PO113. which was IAT Sensor 1 Circuit High Input. any advice helps!
#2
RF Veteran
iTrader: (1)
IAT(intake air temp) sensor is part of the MAF sensor in 1999.
MAF sensor will have 6 wires on the connector, outside 2 wires are the added IAT sensor wires
1994 and earlier Ranger MAF sensors had 4 wires and the IAT sensor was on the upper intake manifold, just FYI.
I would clear the code and see if it comes back.
IAT sensor gets 5volts from computer, this same 5 volts is also used by TPS sensor and ECT sensor, so if that wire was bad you would get more codes about TPS and ECT as well.
IAT sensor has an internal resistor, like coolant temp(ECT) sender or sensor, as it warms up resistance goes up, and as it cools down resistance goes down.
So cold air means higher voltage back to computer, warmer air is lower voltage back to computer.
If engine over heated then IAT sensor and ECT(engine coolant temp) sensor would be out of sync, ECT would have low voltage(hot) and IAT high voltage(cold), so "high input" voltage.
Just guessing
MAF sensor will have 6 wires on the connector, outside 2 wires are the added IAT sensor wires
1994 and earlier Ranger MAF sensors had 4 wires and the IAT sensor was on the upper intake manifold, just FYI.
I would clear the code and see if it comes back.
IAT sensor gets 5volts from computer, this same 5 volts is also used by TPS sensor and ECT sensor, so if that wire was bad you would get more codes about TPS and ECT as well.
IAT sensor has an internal resistor, like coolant temp(ECT) sender or sensor, as it warms up resistance goes up, and as it cools down resistance goes down.
So cold air means higher voltage back to computer, warmer air is lower voltage back to computer.
If engine over heated then IAT sensor and ECT(engine coolant temp) sensor would be out of sync, ECT would have low voltage(hot) and IAT high voltage(cold), so "high input" voltage.
Just guessing
#3
i am pretty sure i figured out my problem. after posting this, i realized i forgot to plug the bleeder and the connector back into my intake hose. cleared the code, drove around the block, light didn't come back. however, i now have another issue. when i'm turning right, my steering wheel shakes. only while in motion. i havent gotten up under the truck yet, i'm wondering if you maybe have any ideas on what to check? i had my left upper control arm replaced that issue was discovered when i would always hear a knocking noise when i'm on the brake coming to a stop. could this shake be a sign of the right control arm finally biting the dust??
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