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I have two. One on each segment of the manifold before they merge and travel down and ou the back. Both look like a pain to unplug.

I'm using I need to replace both?

Guess I'll give it a go. They don't cost much. There's only one in the XJ?

It seems fine after the temp sensor repair. Keeping an eye one it. Going to take a look at the tailpipe. I imagine it will be coated with black soot if it's building up with carbon.

Short on time last night and just addressed the sensor. Seems to have solved the problem.

One thing that's always confused me about the aux fan: stop for gas, temp about 210, no aux fan, start the...

Good coupon available today, so I'll just replace it all.

180 or 195 degree? Been hearing more people saying "a cooler engine is a happier engine", so since I have a choice, I'm asking.

Replaced the tstat 6 a few months back, but not the sensor. Either could behave in a way that would change the readout and the idle speed?

I have either a 195 or 180 degree tstat available where I...

Normal state:
Idle = 695
Oil pressure = 35 to 55 dependling on RPM
Temp = 195

Something that's started happening and becoming more frequent:
Idle = 750-ish
Oil pressure = Normal
Temp =...