High Idle Switch

Duramax3000

Duramax3000

New member
Joined
Dec 12, 2009
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285
When my truck idles even with the temp up about 175 witch is as warm as it gets in the winter time it will blow cold air out of the vents. All I have to do is rev it up to about 1k or 1500 rpms and it's as warm as can be. So who makes a high idle switch for the LB7's and how much are they and how do you install them.
 
Not sure on the switch but how old is the coolant? Heater performance may improve by changing if it's still original.
 
I got the high idle switch from PPE, mainly because the switch it comes with looks factory. Its pretty simple to install. My truck is warm now in 5 minutes. Before I could let it run for an hour and it still wouldn't be warm.
 
when i had my EFI live put on my number one tune on my switch is my high idle because i never use number one
 
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