Best Placement for a Temp Sender?

[BBShark]

Is the best place for the engine temperature sender the thermostat housing?

 

[mrvette]

I wouldn't think so, I know Pontiacs back in the daze always had it in the crossover before the stat, not in the stat housing....

I know that the injection and senders on SBC are in the heads, I have the left side for my temp gauge same as stock, and the pass side is the injection temp sender....

:friends:

 

[Twin_Turbo]

no the head. 1st sign of trouble, steam in the head and the temp gauge spiking. Always put it in the head if possible.

 

[BBShark]

No place to mount on the heads. I could put it in the crossover in the intake manifold. That close enough?

 

[Twin_Turbo]

yes, do it there

 

[JeffP1167]

I would tap into a cross over in the intake at the rear of the engine if possible since this is always the hottest area due to slower circulation.

 

[Twin_Turbo]

On some manifolds the rear crossover is either not there or if it's there and the heater is hooked up there it only sees flow with the heater on since they commonly use a block off plate on the head side.

 

[BBShark]

Yep. No crossover.

 

[mrvette]

On some manifolds the rear crossover is either not there or if it's there and the heater is hooked up there it only sees flow with the heater on since they commonly use a block off plate on the head side.

Yep. No crossover.

Here is where it gets krazy, I did a LT1 intake on a basically L98 aluminum head '89 truck block engine...and with that LT1 intake, there was no front water crossover, much less rear...so the rear and front were drilled and TIG welded by a friend...and the rear was welded up with two pipes that are plumbed to the cabin heater input (suck) side of the water pump....

I did it that way because an OEM TPI setup did it that way and so chose to run the same routing because I figgered GM knew something...also noting my olde type Pontiac experiences from their plumbing/hose routing....

:thumbs:

 

[Bullshark]

Larry, It this a fuel injected car? Is the temp sensor also controlling electric fan(s)?

I agree with TT if the sensor is just controling a temp gauge. However, if it provides feedback to the ECU for optimum fuel control, then the best place is where it gives the best overall indication of the engine temp. (I assume we are probably talking only one sensor, rather than one for each cylinder) That is usually in the the intake water jacket. That is also the best place for controlling fans since the object of the cooling system is to control the engine temp at its optimum performance temp. Just my 2cent here.

 

[big2bird]

Larry, It this a fuel injected car? Is the temp sensor also controlling electric fan(s)?

I agree with TT if the sensor is just controling a temp gauge. However, if it provides feedback to the ECU for optimum fuel control, then the best place is where it gives the best overall indication of the engine temp. (I assume we are probably talking only one sensor, rather than one for each cylinder) That is usually in the the intake water jacket. That is also the best place for controlling fans since the object of the cooling system is to control the engine temp at its optimum performance temp. Just my 2cent here.

I agree here.