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Guest Message by DevFuse

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ECU coolant temp sensor confusion???

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3 replies to this topic

#1 Petersubaru


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Posted 09 December 2004 - 10:59 AM

still looking for the location...I have read passed posts concerning the coolant sensor for the ECU, but I am still confused as to the info given as to the correct location of the part...I went to an offical Subaru dealer who is not familliar with the older cars and their computer diagrams point to the knock sensor as the coolant sensor and the part on top of the thermostate houseing as some sort of solinoid??(they were not sure and these are diagrams from subaru)...also went to a VW mechanic and the Michells online points out also to the area of the knock sensor...another confused mechanic..he could help me either...my car is an '86 loyale/turbo/2wh,drive/auto/4dr..any help would be appreciated...I have never seen the ECU..is there a lite up number that comes on if this part is malfunctioning

#2 All_talk


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Posted 09 December 2004 - 11:08 AM

I believe the ECU coolant sensor is forward and slightly to the left (standing in front of the car) from the knock sensor, its down deep under the area where the upper coolant line goes back to the turbo. It has a two wire connector.


#3 All_talk


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  • Thorp (Ellensburg)

Posted 09 December 2004 - 11:35 AM

From the '89 FSM, worth a 1000 words and all...

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#4 oddcomp


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Posted 10 December 2004 - 01:58 AM

yeah all talk is correct on location
the knock sensor is one wire the coolant is 2 wire i belive..
i found this out the hard way when i wired my megasquirt into the knock sensor instead of teh coolant sensor and then was puzzled why the car was running so rich.. i mean after all the ms thought the car was at -140 degree's.........

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