| LongDuck |
06-23-05 07:35 PM |
Well, I have yet to see a problem with the fast idle cam and the roller on my 84SE, but if you can see where the roller is not releaseing the fast-idle cam when it should, I would start off by checking the springs on the throttle body rods.
If one of the springs has come loose, it will prevent the roller from disengaging from the fast idle cam, and keep your idle high even after the Thermowax pellet has been warmed by the coolant hose from the back of the WP. If the springs are good, and everything else is fine, then just give it a good lube with some spray silicone - this should fix any sticking that may be causing high idle conditions.
Worst case, replace the Thermowax Pellet (green thing hanging off the back of the TB) with a new part. The FSM says this should be changed with an interval tuneup, but I don't recall exactly how many miles they recommend. It may be $50 or so, but would fix the problem with the fast idle cam and also ensure that your vacuum powered 'Secondary Throttles' are opening up via vacuum pressure. These are the first set of butterflies when you look into the secondary intake tubes on the bottom of the TB. When cold, the first set of plates are closed to simulate a rich mixture as would be provided by a choke on a carbureated car. HTH,
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