Any idea were the ECT sensor is located on a 1997 F150 4.6?

 

Drivers side of the manifold , behind the alternator -

 

thanks

 

[QUOTE=jbrew]Drivers side of the manifold , behind the alternator -

Not.

The 97-98 4,6 has two on the pass side. See the two empty holes.

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Yea I see them - Whats it (or they) doin over there ?

Thanks for pointing that out . I figured it would be the same as the 5.4 until the cross over came about - Like you said - "Not"

 

Yah I noticed that too, why does the 97 4.6 have two ECT's? Is it for an average of the ECT or do they act as failsafes for each other?

 

One is for the dash gauge and one signals the ECM. Two different types and PN's.

 

Ah so the one labled on the wire ECT is probably for the PCM (behind alternator) and the inlabeled closer one is probably for the dash huh?

Cool! and Thanks!

 

Yea, I thought they eliminated that sensor totally in 99 on the 5fours - But I could swear I seen one on a 01 5four w/plastic manifold - the sensor was on the passenger side in the aluminum cross over.. Well I'm confused as hell now!!

At what point did the CHT take over the responsibilities of the ECT ? Yep -confused

 

1997-98 had an engine coolant temperature sender for the instrument cluster and an engine coolant sensor for the PCM. In 99 they dropped them and info was taken from the CHT for the PCM. The PCM sent a signal to the instrument cluster with an inferred temp reading.

JMC

 

For the record - 97-98 had a CHT as well as the two ECT's.

 

That's just a 4six thing right ? I know I have one ECT(on the 98 5four) myself and a CHT as well - Hell , I might even have ADD - Who knows ..?

I think it's figured out now.. Uhmm - right?

 

Ya, it's figured out.....except the part about your ADD....still not sure