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Speedy Squirrel Speedy Squirrel is offline
Rocket Scientist
Join Date: Jun 2008
Location: Detroit
Posts: 906
Curious to find if this fixed your issue. The vacuum limiter does fail, but the warmup regulator fails more frequently. Did plugging it solve your problem?

The warmup regulator affects fueling at higher RPM's only on closed throttle. Without the limiter you will get the farting sound in the exhaust.

Do others have problems with 4 to 3 shifting? Mine has always been very smooth. It is the 1 to 2 that has been touchy. I wonder if timpspu has a sloppy linkage.
Old 04-15-2014, 06:18 PM
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