The Ford Barn

Drbrown · 12-05-2018, 12:08 PM

My primary stock temp sensor is in its original location in passenger side head. Other stock sensor in driver's side head was faulty so removed it to install my after market gauge sensor. Ran car other day for first time in a while. Aftermarket gauge showed normal warm-up and running temp (170) but dash gauge went to maximum. Coolant in radiator tank was bubbling. Figured stat in that head was not opening. Raised RPM's to improve circulation. After a few minutes temp there suddenly dropped to normal. Removed radiator hose on passenger side and tested that stat on kitchen stove. It was sticking closed up to boiling point then opening, so now replacing it.

All this to say such an arrangement was beneficial to identifying a probable cause. Had the stat tested ok I would then suspect the water pump on that side.

JSeery · 12-05-2018, 12:13 PM

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Yep, that was the reason for the two sensors. The passanger side indicated the temp and the driver side an over heating condition on that bank.

12-05-2018, 12:08 PM	#1
Drbrown Senior Member Join Date: Oct 2013 Location: Glens Falls NY Posts: 1,267	Dual Temp Gauges Pick-up Faulty Stat My primary stock temp sensor is in its original location in passenger side head. Other stock sensor in driver's side head was faulty so removed it to install my after market gauge sensor. Ran car other day for first time in a while. Aftermarket gauge showed normal warm-up and running temp (170) but dash gauge went to maximum. Coolant in radiator tank was bubbling. Figured stat in that head was not opening. Raised RPM's to improve circulation. After a few minutes temp there suddenly dropped to normal. Removed radiator hose on passenger side and tested that stat on kitchen stove. It was sticking closed up to boiling point then opening, so now replacing it. All this to say such an arrangement was beneficial to identifying a probable cause. Had the stat tested ok I would then suspect the water pump on that side.

12-05-2018, 12:13 PM	#2
JSeery Member Emeritus Join Date: Nov 2012 Location: Wichita KS Posts: 16,132	Re: Dual Temp Gauges Pick-up Faulty Stat Sponsored Links (Register now to hide all advertisements) Yep, that was the reason for the two sensors. The passanger side indicated the temp and the driver side an over heating condition on that bank.