Closed loop question

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Aug 2, 2007 | 07:01 PM

David94TA

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From: Chattanooga, Tennessee

Closed loop question

When going into closed loop, the PCM begins using input from the O2 sensors. Are there any other sources of input the the PCM uses in closed loop that it doesn't use in open loop?

Last edited by David94TA; Aug 2, 2007 at 08:55 PM. Reason: Rephrase question

Aug 3, 2007 | 11:08 AM

MEAN LT1

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Posts: 1,983

From: Jacksonville,fla

Sounds like youve got it. There are a number of thimgs that will send the pcm into open IE, engine temp, o2's, maf, etc....

Aug 3, 2007 | 01:54 PM

Injuneer

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From: Hell was full so they sent me to NJ

The "loop" in "open loop" and "closed loop", refers to the feedback/response from the O2 sensors/PCM, nothing else.

Aug 3, 2007 | 03:48 PM

David94TA

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From: Chattanooga, Tennessee

OK, thanks for the replies gentlemen.

Aug 4, 2007 | 08:54 PM

stereomandan

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Posts: 3,620

From: Saginaw, Michigan

Remember that the MAF is used for both.

Dan

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