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bleachii bleachii is offline
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Join Date: Feb 2008
Location: Huntington Beach, CA
Posts: 205
Thanks for the responses guys. The windings would make more sense from what I read to explain such a sudden drop in the RPMs.

The author explains how the WUR adjusts pressure based on the temps of the engine (cold vs warmed up). The initial requirements of a cold engine are different than the engine once it warms up. Also, there can be a good 10 min or more before the engine is warm enough for the WUR to make the necessary adjustments (for this reason the WUR is very close or on the engine block per the book). I have no idea where it is located yet on my car. I'm in the Sierra's reading so no access to the car.

The electric winding is therefore engineered to force the WUR to adjust pressure after the cold start but before the engine is completely warm. Basically it tricks the WUR into thinking the engine is warm earlier than it naturally happens.
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Old 04-05-2013, 08:16 AM
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