lingering Tach problem.

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Apr 13, 2010 | 10:44 AM

wycowboy

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Joined: Mar 2004

Posts: 835

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lingering Tach problem.

this has been a problem I have had for a few years. It is just kind of annoying and I wonder if It is a sign of worse things to come.

I have an Aux. Idle controller in this truck. It was in it when I got it. there is a 500 RMP Difference between the stock Tach and the controller. The Stock Tach reads 500 RPMS higher. than the controller..I think the controller is accurate . Now I have put 2 different CPS's in and it has not fixed it.
I really wish I could get this Resolved so that I do not have to look down at the floor area at the Aux.Idle to see RMPs.

I would really love help resolving this. If any one here has any thoughts please send them My way.
Thanks a Ton.

Apr 13, 2010 | 02:56 PM

cowmilker08

Logistics Pro

Joined: Oct 2008

Posts: 4,818

Likes: 1

From: Avilla, IN

I've never heard of this, but maybe the needle for the tach is bent or twisted out of position.

Anyway heres a bump.

Apr 13, 2010 | 04:21 PM

superduty4x4

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Joined: Jul 2003

Posts: 12,177

Likes: 40

From: Newport, WA

Pull the needle off the factory tach and push it back on in a different position so that it will read correctly, sounds like someone had the cluster apart at some point and didn't get the needle back on in the right spot. The AIC should be 100% accurate.

Apr 13, 2010 | 08:42 PM