Testing a block heater
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Testing a block heater
Hi Guys,
I don't usually post that often because I can usually find the answer to whatever question I've come up with in the scazillion posts here. I sort of found the answer to this one although I'm having a brain dead moment here - to do the continuity test to see if the block heater is actually functioning what are you using to do the test?
Apparently my brain's too full of computer stuff at the moment to remember simple car things like voltmeters
I don't usually post that often because I can usually find the answer to whatever question I've come up with in the scazillion posts here. I sort of found the answer to this one although I'm having a brain dead moment here - to do the continuity test to see if the block heater is actually functioning what are you using to do the test?
Apparently my brain's too full of computer stuff at the moment to remember simple car things like voltmeters
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Joined: Nov 2004
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From: Manitoba
What year is your truck put it in your signature.......older 85 and below engines were susceptable to block cracking if the BH was used. 6.9 blocks up to serial #u2u17900 had a thinner casting around the block heater. It is very common for these blocks to crack.
First make sure the BH red power plug is in the BH, then do a continuity test with a meter on the main plug wires at the grill. If there is no continuity check the wires for breaks just behind the 120V plug. Pull on the wires and you can see the break as the shielding gets smaller, cut off the end. If the 2 power wires now have continuity through the BH just replace the 3 prong plug.
First make sure the BH red power plug is in the BH, then do a continuity test with a meter on the main plug wires at the grill. If there is no continuity check the wires for breaks just behind the 120V plug. Pull on the wires and you can see the break as the shielding gets smaller, cut off the end. If the 2 power wires now have continuity through the BH just replace the 3 prong plug.
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Truck is an '88 F250 that's slowly but surely attempting to disintegrate. I'm about 90% certain the block heater doesn't work but wanted to be able to check it for sure before I put it on the 'to be replaced now' list.
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