Intake Grid Heater

[Rotax3006]

Hi guys, had a bit of a weird experience with my grid heater this past winter thought Id share incase someone else is having trouble.  The intake heater wasn't working, the wait to start light would come on and cycle like it should but the volt meter never showed a drop.  Checked the hot side of the relay, it showed 12 volts. Cycle the heater on no voltage at the heater terminals. Must be the relay.  Replaced with new, same outcome.  Took the leads off at the heater to check resistance, checked ok.  Cycled the heater again and the leads showed 12v when they were not connected to anything.  Long story short I needed to clean the lead at the battery terminal.  Apparently it was making enough of a connection to show 12v but wouldn't deliver enough amperage once the intake heater was triggered.  So my 6 month problem took about 5 minutes to fix once I figured it out.  Anyway all is well now,  truck starts without being plugged in. 

 

This is truly one of the best forums on the internet lots of helpful folks on here.  Thanks

Bill