ECT sensor

[Pedestrian]

I am rewiring my harness for the EFI and was planning on eliminating the steel heater hoses that run along the EFI intake. The Engine coolant temp sensor is on the heater rail. Can I just move the ECT sensor to the drivers side of the manifold where the factory guage sensor is now located?

Not sure if that made sense, but best I could describe without pictures and arrows.

 

[Viperwolf1]

Sure but where are you going to mount the temp sender for the gauge?

 

[DanWheeler]

could drill and tap the water neck like i did for the temp gauge sender but I've been getting weird results with it on the other side of the thermostat.

why do you want to get rid of the heater lines?

 

[Broncobowsher]

Short answer, yes it will work.
Long answer, if you want a heater, EFI and a guage you need 3 port on a manifold that only has 2.

Since you are in AZ and probably don't need much heat I have a cheat that I did. Can't say it works on the EFI manifold, have not studied it enough. But I took coolant from the back of the manifold. If you look at the heads you will see coolant ports at both ends. Generally the rears are capped off by the intake and the fronts are the ones that go into the thermostat. Drill and tap the rear of the intake at one of these ports and you have warm water. It is only water that has gone through the block but not the heads, so it really isn't hot water. But it is enough to give you a little heat. Do not put a temperture probe there (gauge or ECT) as they will read colder then actual.

 

[Pedestrian]

My drivers side head has a coolant sensor in the back of it for the stock guage. Is this going to give me low readings? I'm not running a heater at present and don't plan on having one for at least the next 9 months. Just trying to clean up the top of the manifold.

 

[70_Steve]

Of course I haven't run it yet, but... I mounted the ECT in the drivers side position where the stock temp sender is. My thermostat housing had a 3/8" NPT connection in the top. So, I drilled an 1/8" hole in the thermostat flange, to get a little constant circulation, and mounted my gauge temp sender there. I guess I'll find out if I get a correct reading or not.

The other option (I though of) is to find a 3-way heater control valve, and mount either the ECT or gauge sender in the heater hose connection on the manifold. That way, there's constant circulation through the heater hose, and should provide a good temp indication.

 

[fromme]

I don't have a pic right now, but I just cut the metal tube a couple inches from the ECT sensor. Then just clamped the heater hose to it. Solves both problems.

 

[Pedestrian]

Ok, decided to keep the heater hoses, but swapped the ECT and the guage temp sender. I needed more clearance by the throttle body for my TFI module and coil mount.

 

[DanWheeler]

Ok, decided to keep the heater hoses, but swapped the ECT and the guage temp sender. I needed more clearance by the throttle body for my TFI module and coil mount.

did your ECT sensor plug hit your TFI module? I had a similar problem but the ECT plug was conflicting with the distributor housing but not the TFI

 

[Pedestrian]

did your ECT sensor plug hit your TFI module? I had a similar problem but the ECT plug was conflicting with the distributor housing but not the TFI

I'm running a remote TFI it is mounted to a plate behind the coil, next to the throttle body. I saw your ECT pic, your ECT lies horizontal, mine is vertical. I will try to get some pics posted.