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holstein13's avatar
holstein13
Explorer
Sep 04, 2015

Base Idle, Fast Idle, Non Idle - Best Practices Diesel

What are best practices for idling and what are the theories behind them. For example, I never use my base idle speed unless I'm in traffic or at a red light. Otherwise, I'll high idle (1,000 RPMs) ...
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Big_Katuna's avatar
Big_Katuna
Explorer II
Sep 04, 2015
I agree you should not idle longer than necessary BUT when I have to for putting the slides in or out and building up air pressure to leave, I click it up to 1000 rpm.

Several good things happen. Your oil pressure goes up, alternator, compressor and ac compressor spin faster and it helps bring engine temp up.

I dont kick it up at redlights.

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