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A couple ideas...
Posted by RayF (more from RayF) on Mon, 1 Jun 2015 10:09:12
In Reply to: so what's stopping the throttle plate now . it is......, Johnd, Sun, 31 May 2015 12:32:58
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Johnd - -
I once had an '89 NA that had bad high idle. The ECU died and when I replaced it with a good one the high idle was gone, along with an annoying check engine light.
Another tack to try: Someone on here once said the intake manifold-to-head seams sometimes leak (who knows if it's true, or common?) and suggested as a test for that, spread grease along the seams when motor is cold and if it cures the high idle on starting then clean up the mess and replace your manifold gasket. If not, then you have a mess to clean up and you still have your problem.
You know, just because it got worse just after you did all that work doesn't mean the work caused it. Though I know the case is strong, sometimes s... oh I mean stuff, just happens.
posted by 71.173.7...
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