What does this switch do?

[Mtrdrms]

One of my switches is labeled HTR PUMP. Is this a coolant pump for front heaters or something?

[BlackJohn]

Originally Posted by Mtrdrms

One of my switches is labeled HTR PUMP. Is this a coolant pump for front heaters or something?

An aid for cirulating coolant in the heater circuit, moves coolant more easily than just what the main water pump provides. You will get heat without it too but a tad slower.


John

[kazetsukai]

Originally Posted by Mtrdrms

One of my switches is labeled HTR PUMP. Is this a coolant pump for front heaters or something?

Mine was for a booster pump that helped the engine coolant circulate through the cabin heater loop. I guess the idea being, you wouldn't want hot coolant circulating in the cabin during the warmer months.

[Mtrdrms]

Thanks guys! Thats what I thought.

[Native]

At least yours had words on it ... mine just had a picture of a water faucet. I could not figure out what is was supposed to do. I tracked it down by flipping it and listening to the motor running. The motor was atached to the top of the firewall in the engine compartment.

[Drew Bru]

I've been told these can be problematic and that they should be removed when the rear heaters are removed. Anyone have any input on/experience with this? I've left mine in place, figgering I'd rather borrow trouble than create it.

[somewhereinusa]

Originally Posted by Drew Bru

I've been told these can be problematic and that they should be removed when the rear heaters are removed. Anyone have any input on/experience with this? I've left mine in place, figgering I'd rather borrow trouble than create it.

I don't think it would be any more problematic than any other 20 or so year old water pump. Mine was a very nice, probably expensive, made of brass, pump that repair parts were still available for.