have a rough start sometimes when cold, it fires find but sounds like its on 2 or 3 cylinders for 5 seconds or so,was told maybe the water temp sensor was faulty,where is it ?

classic WRX

cheers

 

it's on the water cross pipe, bell housing side 92-96 and alternator side 97-98. follow the top rad hose under the inlet manifold and you will see it. the ecu one has a 2 wire plug, the one next to it is the gauge sensor (1 wire)

 

cheers,got it off,19mm spanner, bugger to get too, had to remove a fair bit of piping LOL,anyhoo,is the uk classic the same part number etc,as my main dealer are idiots and if i mention WRX they go quiet LOL

cheers

 

I would say so.