Which sensor is the ECT?
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New User
Joined: Jul 2003
Posts: 9
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From: Chandler, AZ
Which sensor is the ECT?
I have a '91 F-150 w/5.8L. There are 2 temp sensors, one is on the intake on the driver's side near the fuel rail, and the other is on the tube that the heater hose connects to. I know that 1 is for my temp gauge and the other is for the PCM, which is which? I believe they are 2 different part no's. Thanks!
Post Fiend
Joined: Nov 2002
Posts: 9,987
Likes: 7
From: Memphis, TN
Which sensor is the ECT?
The one in the intake runner by the injectors with 2 wires is the ACT (Air Charge Temperature sensor) for the PCM; the one on the thermostat cover with 2 wires is the ECT (Engine Coolant Temp), also for the PCM. The brass one on the L front of the manifold with a single R/Wh wire is for the temp gauge.
