[MR.T]

I would look a bit closer at the throttle body. Pull off the air box connection and look for deposits around the butterfly. Throttle body cleaner will knock it right out.

How cold was it up there? You might want to check and see if you still have coolant lines running to your tb. They could've been bypassed and your tb is freezing up on you. I'm pretty sure Wisconsin is cold enough to merit keeping those lines attached.


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[MR.T]

It's really easy to check. At the bottom of the throttle body there's a plate with two hoses coming off the bottom. As long as there are hoses hooked up you're good. It was a really common mod to rovers because the gasket at that aforementioned plate is a leak spot.

Though at 40* there was no way you were freezing up.


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[MR.T]

http://www.landroverclubvi.com/seafoam-induction-procedure.html

Doing a seafoam induction is never a bad idea. I do it once a year.

This will not help your high rev but part of this write-up is a throttle body cleaning.


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