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Engine heater works intermittently
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Author:  WWV [ Sun Nov 28, 2010 5:54 pm ]
Post subject:  Engine heater works intermittently

Plug her in and engine block heater only works about 20% of the time.

What are the likely culprits? What should I check 1st?

Thanks in advance,
WWV

Author:  Joe Romas [ Sun Nov 28, 2010 6:25 pm ]
Post subject:  Re: Engine heater works intermittently

At least one fellow mentioned a bad connection by the plug.

Author:  CATCRD [ Sun Nov 28, 2010 8:37 pm ]
Post subject:  Re: Engine heater works intermittently

The wire is probably frayed inside the insulation, right at the plug. Use an ohm meter and flex it while you measure the resistance and it should be about 35 ohms.

Author:  WWV [ Sun Nov 28, 2010 9:06 pm ]
Post subject:  Re: Engine heater works intermittently

That was my guess as well. I'm just going to cut and replace. Don't have meter handy....

Thanks,
WWV

Author:  WWV [ Mon Nov 29, 2010 6:50 pm ]
Post subject:  Re: Engine heater works intermittently

ok, next question....

Both "hot wires" look identical. Ground is obvious as it is green.

Any ideas on hot wires on which terminal to hook to? Does it matter?

Thanks,
WWV

PS - can you tell I hate electrical......? :oops:

Author:  CATCRD [ Mon Nov 29, 2010 8:10 pm ]
Post subject:  Re: Engine heater works intermittently

Doesn't matter. It's just a resistive element.

Author:  WWV [ Mon Nov 29, 2010 8:39 pm ]
Post subject:  Re: Engine heater works intermittently

Thanks....testing tonight....

WWV

Author:  WWV [ Tue Nov 30, 2010 8:29 pm ]
Post subject:  Re: Engine heater works intermittently

worked perfectly.

Thanks!

Author:  kccrd [ Tue Nov 30, 2010 10:13 pm ]
Post subject:  Re: Engine heater works intermittently

I had the same problem last winter the plug wire was bad right at the plug, replaced the plug plus installed a Proheat oil pan heater Model 154 I think and wired them together now when I start on a cold morning around 15 to 20 degrees F my oil is 60+ degrees F much better on the engine having very warm oil plus with the block warm also I have instant heat out of the vents.

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