JimMueller

iTrader: (9)

I need to check the wiring and sensor, but my choice to buy a used '99 Helms manual at a great price years ago bit me on this.

Thanks!

slow

iTrader: (7)

what part is not working, the pcm data or the gauge cluster?

Ryan

JimMueller

iTrader: (9)

Technically, both When the car was under warranty, they calibrated the gauge to read 210* when the ECT was 210*. The next time I swapped the sensor it's been off ever since. But this inquiry is more about insuring the PCM is geting the correct temp. My ECT is sporadically bouncing up and down +/- 2-10* and I'm not getting any codes. Trying to find out why the reading is behaving like that. The motor was just switched from a LS1 to a LS3 and we kept the same ECT sensor.

zac50

where is the ECT sensor located?

JimMueller

iTrader: (9)

The OEM ECT sensor is located on the front of the passenger side head, slightly above and to the left of the cylinder #1 exhaust IIRC.

joecar

You might try looking at the diagnostic charts/procedures at www.gearchatter.com.