Auto High-Idle
Alright I was just driving at operating temperature on a county highway at roughly 60 mph for about 10 minutes. When I pulled into the driveway and put my truck in park I usually let it sit a little bit anyways. But no more then 3-4 minutes after letting it sit auto high-idle kicked in for roughly a minute. Is this a glitch in the system? or is this an effort to cool the engine or the turbo? Just wondering. Thank you.
---AutoMerged DoublePost---
Originally Posted by Diesel Addict101
(Post 959828)
Alright I was just driving at operating temperature on a county highway at roughly 60 mph for about 10 minutes. When I pulled into the driveway and put my truck in park I usually let it sit a little bit anyways. But no more then 3-4 minutes after letting it sit auto high-idle kicked in for roughly a minute. Is this a glitch in the system? or is this an effort to cool the engine or the turbo? Just wondering. Thank you.
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Auto high idle helps keep the coolant at a certain temperature and to prevent cylinder wash down...if it was above 40*F, you may have another issue causing the truck to think it needs high idle (bad thermostat or temperature sender).
I want to remember the automatic equipped trucks can also be manually put into high idle using the cruise control switches. I think the 3 cylinder thing is a 2nd gen option... ---AutoMerged DoublePost--- If it was loping when it went into high idle, start saving $$ for injectors... |
3rd gens have 3 cyl mode also.
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Originally Posted by TheOtherNick
(Post 960020)
3rd gens have 3 cyl mode also.
Not unless someone is making it happen with a programmer...stock they don't. |
Well I tell ya what she wasnt loping so thats good. And how can it be put in high-idle manually? Also as far as the coolant temp goes I will say that when I let it sit for like not even 5 minutes it goes from operating temperature to a 1/4 on the temp gauge... bad thermostat could be possible if shes stuck open. It would probably be one of the cheaper replacements.
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Dealer can flash ya with manual high idle and 3 cylinder mode.
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I suppose theres a cost?
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Mine charged me $55. If you know some one with a drb III they can do it also.
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