Po code help
#4
Here are the proper steps to diagnose:
George
- make sure that the cooling system is full and properly bled
- Make sure that the thermostat is good
- Jumper the ECT harness signal wire to signal ground with a fused jumper wire and read ECT with a scanner, should read 280F. If not try battery ground.
- Test the signal wire and lo ref for shorts, opens, high resistance
- Test the ECT sensor
George
#6
Po code 128
George
I went the easy route l checked my maintenance records and I replaced my thermostat back in 2011 so I just bought a new one and replaced it problem solved normal temperature back to normal thanks for all the help though
I went the easy route l checked my maintenance records and I replaced my thermostat back in 2011 so I just bought a new one and replaced it problem solved normal temperature back to normal thanks for all the help though
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