2 coolant temp sensors?

[beastofablaze]

Do some k5's use 2 coolant temp sensors?

I have a leftover sensor after my swap and it won't fit in any of the water plug holes in the intake manifold.... it'll only fit in the head. My coolant temp sensor (# 1 I guess?) on the other hand fits right into a hole in the manifold...

Crankshaft sensor is hooked up as well as the knock sensor... I'm stumped.

 

[MattK]

i know coolant temp sensors will fit in the top of the water pump. there is most likely a plug there now. ive never personally seen a sensor there from the factory though.

edit: i think i misunderstood your post. i think more details of the truck are necessary

 

[dyeager535]

More than likely you've got a gauge temp sender and an ECM temp sender. (either a CCC or TBI truck, since the poster is in CA) The one wire sender is for the gauge, two wire is for the ECM.

ECM one is in the intake, gauge is in the head.

 

[Kiqman]

What He Said

More than likely you've got a gauge temp sender and an ECM temp sender. (either a CCC or TBI truck, since the poster is in CA) The one wire sender is for the gauge, two wire is for the ECM.

ECM one is in the intake, gauge is in the head.

The one in the head goes to the dash gauge. The one in the manifold goes to the ecm.

 

[sled_dog]

Crankshaft sensor? TBI doesn't have a crank position sensor. It uses the hall effect in the distributor to figure that out.


There should be 2 ECTs, one for the ECM one for the Gauge. one is in the intake manifold and one is in the cylinder head. Couldn't tell you which one is which off hand, its been a long time since I've messed with TBI.

 

[K5er4Life]

I can confirm that on my 87 TBI the sensor in the manifold is for the ECM and the sensor in the head goes to the gauge.

 

[beastofablaze]

Cool thanks for the help guys.

 

[ryoken]

I can confirm that on my 87 TBI the sensor in the manifold is for the ECM and the sensor in the head goes to the gauge.

x2....