Luke Warm Heat? - Page 3 - Chevy and GMC Duramax Diesel Forum
01-04.5 LB7 Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect

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Old 11-15-2012, 07:49 AM   eBay Motors  #21 (permalink)
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Quote:
Originally Posted by rd05lly View Post
Center of dash at floor. Is it blowing cool left and right?
If so I would check coolant first take bleeder screw out till coolant comes out. Heat is first thing you lose when low.


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Blows luke warm out both left and right vents, seem to be same temp. Will try bleeder screw.

Quote:
Originally Posted by mikeyg View Post
Either clamp and unhook heater hoses going to the core In the firewall or grab a couple flushing "t"s and flush the core. It will help out tons. Dam dexcool gunks everything up
Ok, will flush the heater core too.

Thanks for the ideas guys, looks like this weekend going to be busy in the garage.
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It's the millions who put him in office and twice!

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Old 11-16-2012, 06:06 PM   eBay Motors  #22 (permalink)
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Update

Borrowed a temp gun from work, we use these to read electric motors, after driving back from work, I turned the heater full on and measured above the thermostat housing, I got 145*F on heater hose, upper radiator hose also about 143*. I figure the thermostats are gummed up, or have there's a bypass hole in the thermostat that won't allow the engine to get up to 180ish. Going to replace thermostat and flush the heater core this weekend, hopefully I'll be sweating thru winter after that.
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LBZ CCSB 4x4. sealed. blocked. re-routed. shimmed. EFI by Kory 4" MBRP downpipe-back. Alligator trans cooler hoses. 3" Pro-Fab downpipe. Transgo Jr. Banks ram air intake. MA pump rub fix. Rare Parts tie rods. Fumoto Valve. AirDog 150. Nicktane CAT filter adapter.

http://performancetruckproducts.com/

Quote:
Originally Posted by Thomas Jefferson
"I prefer dangerous freedom over peaceful slavery."
Quote:
Originally Posted by flyin6 View Post
You know the real problem is not Obama
It's the millions who put him in office and twice!

Quote:
Originally Posted by Clint Smith
"When seconds count, the cops are just minutes away."
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Old 11-16-2012, 06:45 PM   eBay Motors  #23 (permalink)
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Quote:
Originally Posted by mikeyg View Post
Either clamp and unhook heater hoses going to the core In the firewall or grab a couple flushing "t"s and flush the core. It will help out tons. Dam dexcool gunks everything up
Actually, Dex by itself is fine, it's just when you mix it with certain other green/yellow brands it may cause it to "gunk up". Not all other brands are compatable with Dex, be careful, read the label if mixing with another product, better yet, just don't mix it with anything else.
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Old 12-01-2012, 10:16 AM   eBay Motors  #24 (permalink)
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Changing out the thermostats helped, heater is warmer. Might fab up some ghetto winter front covers for the mornings.
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LBZ CCSB 4x4. sealed. blocked. re-routed. shimmed. EFI by Kory 4" MBRP downpipe-back. Alligator trans cooler hoses. 3" Pro-Fab downpipe. Transgo Jr. Banks ram air intake. MA pump rub fix. Rare Parts tie rods. Fumoto Valve. AirDog 150. Nicktane CAT filter adapter.

http://performancetruckproducts.com/

Quote:
Originally Posted by Thomas Jefferson
"I prefer dangerous freedom over peaceful slavery."
Quote:
Originally Posted by flyin6 View Post
You know the real problem is not Obama
It's the millions who put him in office and twice!

Quote:
Originally Posted by Clint Smith
"When seconds count, the cops are just minutes away."
ty_LBZ is offline   Reply With Quote Quick reply to this message
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