Quote:
Originally Posted by Brian Carlton
It's difficult without a Mityvac, but, it does appear that the VCV is working correctly.
You can adjust the VCV if you get a Mityvac.
However, your results via adjustment of the modulator seem to indicate some success as well.
The orifice is a very small plastic nipple that is easy to miss. Look for a round piece of plastic........just about the same diameter as the vacuum hose.........in the vacuum hose line from the main vacuum to the VCV. If the orifice was slightly larger, the rate of vacuum falloff with increasing throttle position would be lessened.
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Success!!!!! though not total success yet. I did locate the orifice. I did finally realize how to adjust the VCV and am on the way to a smooth shifting transmission. After about a dozen minor adjustments and subsequent trips down the road, it's not perfect but it's much better. Rainstorm blew in so I postponed the final adjustments. I read in another post that sometimes it's good to buy a handful of different orifices and fine tune with them. Haven't seen any listed for sale. Any suggestions? Also, with the present setup, it seems that I need to keep the idle vacuum higher (around 15") to obtain better shifts. Any thoughts on that?
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John Schroader
bio burnin' 83 300D, '83 300 SD, '79 240D
"I've never met a man who was good at making excuses who was good at anything else" Ben Franklin
"You cannot permanently help a man by doing for him what he could and should do for himself" Abraham Lincoln
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04-25-2007, 09:14 AM
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