Consensus on idle limits
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Cargo Master
Joined: Oct 2011
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From: SoCal/Wyoming
Consensus on idle limits
Sitting today having lunch and letting the truck idle to have A/C (temp of 103 outside) I was wondering what the generally accepted time limit may be for letting the truck idle before shutting it down or putting an additional load on the engine. I have seen people lock their truck and leave it running while they have lunch in colder areas and some out here do the same in summer to keep it cooler. Just wondering what the general rule of idle time may be out there.<O
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Cargo Master
Joined: Oct 2011
Posts: 2,885
Likes: 778
From: SoCal/Wyoming
I have read a number of articles on cylinder wash down (wet stacking) issues and some say no more than 10 minutes while others say no more than 45 minutes. I have a high idle tune but just wondering about the standard idle RPM time limits. I know a warm engine is key but once it sits and idles for a time the engine will cool and wet stacking will begin. The argument appears to be between a low idle (regular) and high idle (assisted increase in RPM) to maintain a load and warm the engine. Low idle bad and high idle can be done as long as fuel permits.
9 ECHO 1
Joined: Aug 2009
Posts: 12,467
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From: Missouri
To answer the original question, I think it also depends on frequency. If you are in a bind and need to sleep in the back, one night wont hurt it. If you are a hot shot OTR driver and do it every night, then you might look into a high idle tune or something.
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