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Manually operated glow plug question???

dhaumann69166

Active member
234
78
28
Location
Hyannis, Nebraska
My M1038 has the glow plugs on a push button instead of coming on with the key. I am trying to figure out how long I need to hold the button for them to warm up? Also wondering if all models of HMMWV glow plugs are the same? Mine has the flat connector where the wire plugs onto them but I see most of the glow plugs for sale for the HMMWV have the round plug. Is there any difference other than the connector?
 

Action

Well-known member
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Location
East Tennessee
About 7 - 10 seconds and only if the motor hasnt ran in several hours.
Humvees did not come with a push button gp circuit or spade plugs.
Doesnt the cucv use 24v spade plugs?
 

dhaumann69166

Active member
234
78
28
Location
Hyannis, Nebraska
I have found 24v spade plug glow plugs for CUCV just wanted to make sure they were the same fit. Previous owner put the glow plugs on a push button when they hacked the wiring harness coming through the firewall. Eventually I might wire it back in factory but for now it works....kind of. I think I might have some plugs going bad because if it’s not plugged in for a couple hours it won’t start below 65 degrees. Need to test them or just replace them all and be done with it.
 

Action

Well-known member
3,576
1,557
113
Location
East Tennessee
I have found 24v spade plug glow plugs for CUCV just wanted to make sure they were the same fit. Previous owner put the glow plugs on a push button when they hacked the wiring harness coming through the firewall. Eventually I might wire it back in factory but for now it works....kind of. I think I might have some plugs going bad because if it’s not plugged in for a couple hours it won’t start below 65 degrees. Need to test them or just replace them all and be done with it.
If what isn't plugged in for a couple hours? A block heater or the plugs?
 
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