How To Test Coolant Temp Sensor?

[B0oStEr]

My r32gtst blows black smoke when cold but by the time I get the afr checked the engine has warmed up and it tests perfect.

The mechanic said it could be a faulty coolant temp sensor so ecu thinks it's minus 20 degrees C and gives too much cold start enrichment.

Does anyone know how many ohms it should read at say 20 deg.C for a cold start in morning? Better still a chart showing ohms for 0-100 degrees?

I have such a chart for an r30 but I don't know if it's similar for r32.

[midnight]

got a service manual? itll tell you how.

[RB30-POWER]

OK, for RB20DET it is as follows.

2.5k ohm when cold (20degC)

0.3k ohm when warm (80degC)

Hope that helps

[B0oStEr]

Thanks

Both those values are on the line on the R30 chart so I guess they are the same.