westy94wrx

Does anybody know where the Coolant Temp Sensor is that tells the ECU information? not the one underneath the alternator im really struggling to find it as my car is struggling to start first thing in the morning? Thanks in advance Adam.

172sport

iTrader: (6)

Hard to describe easily - But if you look to the front left of the turbo under the manifold there is a brown plug, thats the one.

Its a bit of a pig to change too given its location.

**jay**

iTrader: (1)

The one under the alternator is the crank sensor the coolant temp sensor is just under the back of the alternator either 2 wire or 3 wire, best taking the alternator off to change as its tricky with it on.

westy94wrx

so theres two temp sensors the one under the alternator ? the one for the guage on the dash clocks and the one near the turbo on the block? the one that tells the computer wether the engine is hot or cold. anybody have any diagrams or pictures how to do it?

JDM_Stig

iTrader: (3)

you want the rear 1 as mentioned earlier, there is a small breather pipe that's in the way when you first look.

westy94wrx

so is it on the side of the engine or on top under the manifold ? Thanks everyone for there replys.

**jay**

iTrader: (1)

Sorry mate ignore my last post, if its a 1995 its at the rear the big plug on the right.

dabow

iTrader: (19)

just about to put that

the early classic it sits to the rear of the inlet manifold
face lift and after, sits on the front behind the alternator.

westy94wrx

ok thanks everyone for there info you dont understand how much that will help me.Thanks Jay for the much needed info much appreciated mate. Do you all think it will cure my cold starting problem?

dabow

iTrader: (19)

when mine went, it was sort of hard starting. but thats the main corse of this sensor going mate. its not the hardest part to change, but if ealy classic you'll get scrapped nucles

westy94wrx

ok dabow so your impreza was a b1tch for cold starting aswell?

dabow

iTrader: (19)

yes mate. took ages to start it
the way i see it, when this sensor goes it arcs. coursing the issue