Date: Mon, 15 Oct 2012 16:34:30 -0700
Reply-To: william landsman <unclebeer@HOTMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: william landsman <unclebeer@HOTMAIL.COM>
Subject: Automatic Trasmission Question
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Hello,
I have a 1990 Westy with very similar problem to the info I found below. For my van it usually takes anywhere from .5 miles to 1 mile to shift into 2nd gear. It is also usually after a few days of non-use. If I drive one day and then the next it will be fine about half the time. I recently changed the transmission fluid and changed the screen, and seems the same if not a little better than before.
1. If it is a defective Automatic Transmission Governor (Where do you find these?)
2. If the governor is dirty/gunked up (How do you go about cleaning it?)
Any help on the above questions would be great.
Regards,
Bill
Problem - "My '87 Westy automatic transmission operates well after about 2 miles,
but will not shift into drive during the first mile or two of travel.
This is only a problem on the initial trip per time period, ie. if the
tranny is warm from recent travel it shifts fine."
Capt. Mike, Moderator, 10-25-2000 08:05 AM
Nice of VW to leave it out of the Vanagon edition of the Bentley, but
the older Type II edition has an excellent troubleshooting chart for
A/T's. Section 7-3.1.a.
Although your symptom could come from several causes, the prime suspect
is #7: "Transmission stays in 1st gear with lever at 2 or D." Their
probably cause is a. Governor dirty or defective; b. Valve body assembly
dirty. There are a couple of others that may also be applicable.
I'm not too versed on A/T's but that you got an improvement with a
screen cleaning and Dexron III change is encouraging. Tranny fluids do
contain cleaning additives and if you have a blocked or sticky valve,
it's possible it will work out as varnish dissolves or the piece of trash
breaks free and moves to the filter. You might check with a reputable
tranny shop to see if there's a safe and effective tranny cleaner
additive. One that you can put in, run the specified miles, then drain
and refill with fresh Dexron.
Do check your vacuum connections. A slight leak or deficiency,
compounded by cold oil could leave you with incorrect vacuum until
things warm up and seal.
Like oil changes in a gunked up engine, several changes in a short
sequence could clear you out. Hope so rather than have to pull the
tranny for a valve plate cleaning or worse.