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Tool Talk Discussion Forum

Block heater extension cord question

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Cariboo4x4

01-10-2021 07:17:07




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For the life of me I cant figure this cord out. I plug it in to a tested power source and no power at opposing end. I think the metal disc maybe senses cold or sits against heater hose?? I cant find it on the net. Its says Temro model 2900009 PAT. 1982 Made in Canada on it. Anyone here use one and how does it work please?

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Cariboo4x4

01-14-2021 09:55:42




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 Re: Block heater extension cord question in reply to Cariboo4x4, 01-10-2021 07:17:07  
Thank you for the research and info. My first wife's grandfather had a mechanic shop. I remember now this cord came from his unbought stock that was left over from his shop. I'm using a regular cord till I have time to test cord. Maybe today. Its -14C today.



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sotxbill

01-12-2021 16:02:32




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 Re: Block heater extension cord question in reply to Cariboo4x4, 01-10-2021 07:17:07  
might cut OFF the line with it warms up. so at cooler temps is on and when its around 40 or 50, its cuts off???



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wore out

01-11-2021 13:21:39




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 Re: Block heater extension cord question in reply to Cariboo4x4, 01-10-2021 07:17:07  

I "reached out" (as they say today) and emailed Customer Support at Zerostart and today got the following reply:

"Hi,

That part number was obsoleted from our system 15 years ago. There won’t be an application for that anymore.

Thanks,

Audrey Morschen

Customer Account Representative

Phillips & Temro Industries"


So there you have it, the folks that made it don't even know what it's for, anymore! LOL!

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buickanddeere

01-11-2021 11:03:59




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 Re: Block heater extension cord question in reply to Cariboo4x4, 01-10-2021 07:17:07  
The block heater Cords on our vehicles had the built in thermostat inside the plug . Cut the thermostat off them all and installed male plugs that glow when plugged in .



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Chris in SK

01-11-2021 10:57:19




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 Re: Block heater extension cord question in reply to Cariboo4x4, 01-10-2021 07:17:07  
I've never seen a block heater extension cord like that. It almost looks like you zip tie it to a water pipe or something....maybe its for plumbing. Does it work if you take it outside and get it cold or put it in the freezer?



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buickanddeere

01-10-2021 15:52:23




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 Re: Block heater extension cord question in reply to Cariboo4x4, 01-10-2021 07:17:07  
Use an ordinary extension cord instead of that silly thing. It won't turn on the block heater until the temperature drops below 0F.



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Billy Shafer

01-10-2021 10:13:51




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 Re: Block heater extension cord question in reply to Cariboo4x4, 01-10-2021 07:17:07  
That disc is the temp control switch. Should have the on/off range on it.



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Russ from MN

01-10-2021 08:16:34




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 Re: Block heater extension cord question in reply to Cariboo4x4, 01-10-2021 07:17:07  
Looks like a good idea! Some GM block heater cords have a thermostat built right into them, and if you cut it off and put a regular plug on it then you can confuse the computer. I did that, and had to disconnect the battery for 2 minutes to reset it.



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jimks

01-10-2021 07:40:19




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 Re: Block heater extension cord question in reply to Cariboo4x4, 01-10-2021 07:17:07  
put an ice cube or cold pack on the silver disc and see what happens.

Jim



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Uniballer

01-10-2021 07:33:16




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 Re: Block heater extension cord question in reply to Cariboo4x4, 01-10-2021 07:17:07  
This document says it has a thermostatic switch:

https://www.customsmobile.com/rulings/docview?doc_id=HQ+967527



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