Block heater question

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Feb 11, 2019 | 09:54 AM

#16

knottyrope

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From: Bahstun

GPR is a relay for switching 100 amps.
Contacts burn out with age and coils can go bad over time once insulation breaks down
low voltage can cause the contacts not to engage fully and then burn them out
some times it can be just a corroded connector or cable lug

Stancor makes a better relay, I have one for a spare

Feb 11, 2019 | 09:59 AM

#17

67camaro

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Its a E350 7.3 think its a hard replacement
Should I hear it cycle

Feb 11, 2019 | 10:13 AM

#18

knottyrope

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From: Bahstun

I don't hear mine cycle but do notice the voltage drop on the gauge

Feb 11, 2019 | 10:44 AM

#19

farmert

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From: western SD

Quote:

Originally Posted by 67camaro

Its a E350 7.3 think its a hard replacement
Should I hear it cycle

Take the cover off the dog house, you should be able to hear it click. On a F series the relay is located about midway down the engine valley on the passenger side. I assume it would be located in the same place on the E series.

Feb 11, 2019 | 07:57 PM

#20

67camaro

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No clicking or any sounds

Feb 12, 2019 | 11:17 AM

#21

Hit Man X

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From: North Texas

I can hear my Stancor click. Swapping to it was one of the first things I did on my truck. First were new batteries (850CCA), cleaning grounds, and a Denso starter.