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Re: 03 2500HD 6.6L idle surges
Posted to HD/Fleet Forum on 3/23/2007 3 Replies

You should be able to command FRP with a decent scan tool. If FRP and desired mismatch and actual is higher, it seems like the reg is bad. They do that.

Usually you'll see a P0089 or P0194, or both.

I think KOER FRP should be 35-40MPA Login to read more.

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