4.3l merc temperature sensor replacement options

[rock doc]

Seems I have a bad sensor. Are there any readily available sensors from Canadian Tire that I can use (only store open on Sunday)? Looks like a standard auto sensor.

Motor details:
1991
Serial: 0C877775
2 barrel carb
It has the newer version thermostat with no poppet balls ( I think it is serial #860256A3).

Checked riser temps today while on muffs. 80F on port side/ 130F starboard side. This seems to be consistent with when we are cruising. I assume this is normal as the cold water seems to be preferentially directed to the port side. This is a cold water manifold setup.

 

[rock doc]

Re: 4.3l merc temperature sensor replacement options

Here is the housing. I checked the temps with an IR gun. Boat is running well - I should have checked the darn sensor sooner.

 

[Watermann]

Re: 4.3l merc temperature sensor replacement options

Best bet is to take the old sensor in the store with you and have them cross reference it's part number and see if there's a match with their in stock auto parts.

 

[rock doc]

Re: 4.3l merc temperature sensor replacement options

I believe it the part number is 806490T. So far I have not been able to cross reference it.