Coolant Temp Sensor - ZR-1 Net Registry Forums

herc795 · 07-18-2013

Thanks, I will get the Marc's chip. Another thing is that the primary relay sounds like a rattle snake when the fan is operating. The primary fan works intermittently. Seems like might be a wiring issue.

White Bullet · 07-19-2013

This sounds similar to my experince with the A/C running. Mine would get hot in traffic and cool down on the highway. In my case the problem turned out to be a stuck thermostat. I replaced it with a new one and added Marc's chip and now the temperature stays on or below the notch on the temperature gauge (185 to 205 F based on the temperature display on the A/C Controller). It will get a little higher if in stand still traffic but once the car starts moving it drops down quickly.

gbrtng · 07-19-2013

Quote:

Originally Posted by herc795

Thanks, I will get the Marc's chip. Another thing is that the primary relay sounds like a rattle snake when the fan is operating. The primary fan works intermittently. Seems like might be a wiring issue.

Swap the two fan relays - does the noise follow the relay? If yes, replace the relay. If no, the problem is upstream of the relay - might be wiring, but a look at the wiring diagram in the FSM is your next step.

herc795 · 07-22-2013

The rattle snake action did follow. I did look at the wiring, I found a splice. One wire coming in two going out, each going to the F post on each plug. I am going to re-splice the wires and see if that might do it. I did not have time to research it this weekend. I will do it tomorrow. I also did get a new plug which I might change. I did change the thermostat last year. Thanks for the help.

07-18-2013	#1
herc795 Join Date: Jul 2013 Location: Mansfield, OH Posts: 20	Re: Coolant Temp Sensor Thanks, I will get the Marc's chip. Another thing is that the primary relay sounds like a rattle snake when the fan is operating. The primary fan works intermittently. Seems like might be a wiring issue.

07-19-2013	#2
White Bullet Join Date: Apr 2008 Location: Gainesville GA Posts: 231	Re: Coolant Temp Sensor This sounds similar to my experince with the A/C running. Mine would get hot in traffic and cool down on the highway. In my case the problem turned out to be a stuck thermostat. I replaced it with a new one and added Marc's chip and now the temperature stays on or below the notch on the temperature gauge (185 to 205 F based on the temperature display on the A/C Controller). It will get a little higher if in stand still traffic but once the car starts moving it drops down quickly.

07-22-2013	#4
herc795 Join Date: Jul 2013 Location: Mansfield, OH Posts: 20	Re: Coolant Temp Sensor The rattle snake action did follow. I did look at the wiring, I found a splice. One wire coming in two going out, each going to the F post on each plug. I am going to re-splice the wires and see if that might do it. I did not have time to research it this weekend. I will do it tomorrow. I also did get a new plug which I might change. I did change the thermostat last year. Thanks for the help.