Date: Fri, 21 Oct 2005 19:03:12 -0400
Reply-To: Jonce Fancher <streetbugs@WHISPLLC.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Jonce Fancher <streetbugs@WHISPLLC.COM>
Subject: Re: Type I thermostat (need union nut)
In-Reply-To: <002701c5d65b$86129560$e1e4fe42@jbeauliexp>
Content-Type: text/plain; charset="iso-8859-1"
Hi Jake all you need to do is tap the original union nut for the type 4 to a 7 x 1.0mm tap that is on the Type 1 thermostat. i just did it on a 82 westi and it
works like a champ ive got a picture on how to do it on my digital camera but just dont have the computer savey to do it for all to see. from there you just put
your cable and retapped union nut on the type 1 stat and your good to go. good luck and if you want some pics let me know i can email them to you. c-ya
Jonce
>Hello all,
>Well the thermostat on my 82 AC vanagon died last week. I have a good type
>I thermostat, just like the one you can buy from Bus Depot (Thanks B Bob).
>However, I do not have the union nut for this thermostat. One of the
>differences between the type I and IV thermostats is the thread size of the
>nipple. The union nut that works for the Type IV will not work on the Type
>I. I called Bus Depot and they will not sell the nut without the purchase
>of a new thermostat ($54). So, does anyone have a union nut for a type I
>that they would be willing to part with?
>Thanks,
>Jake
>-----Original Message-----
>From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM] On Behalf Of
>Higginbotham, David A.
>Sent: Tuesday, September 27, 2005 9:49 AM
>To: vanagon@GERRY.VANAGON.COM
>Subject: Re: 82 won't start when hot
>Tom writes:
><<<
>I think you're on the right track with you thoughts about a too-rich
>situation. One cause of this is simply the effect of time and use on
>the
>AFM. The AFM in these things has an air-vane that twists against a
>spring
>in response to the engine's demand for air. The position of the
>air-vane
>affects a signal to the ECU which provides more or less fuel in
>response.
>Over time the spring in the AFM weakens which leads it to signal to the
>ECU
>a demand for fuel which is TOO HIGH AT ALL SPEEDS. The vehicle starts
>up
>fine when cold because it can use all the gas that's dumped into it.
>But,
>when the engine is hot, the engine 1) won't start when warm unless you
>provide it with LOTS of air, typically by holding the gas pedal to the
>floor
>while cranking and 2) tends to stall out it idle and bog down when
>climbing
>hills.
>There's 3 fixes:
>1) If you're lucky, you lean out the mixture with the CO adjustment
>screw in
>the AFM
>2) If things have progressed to the point where you can't lean out the
>mixture sufficiently with the CO adjustment screw you either
> A) Open up the AFM and tighten the spring (details in the archives)
> or
> B) Buy a reman AFM
>If you have a California van you can set the mixture properly by
>monitoring
>the O2 sensor (details in the archives) and if you have a federal van
>you
>should really take the vehicle to somebody with an exhaust gas analyzer.
>Of course, before doing anything involving spending money you first
>check
>over the FI system thouroughly as a bad TempII sensor or too-high fuel
>pressure will also lead to a too-rich situation.
>>>>
>Thank you Tom. I used to be able to tune a carb back in the day, but I
>know next to nothing about FI systems. I just have never had to tinker
>with one, good luck I guess. Time to get out the Bentley and study up. I
>will start with troubleshooting the AFM and move on.
>David
>--
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Jonce Fancher
57 Single Cab
66 Sunroof Bug
66 Variant Squareback
71 Sunroof Bus
75 911S Sunroof
84 Vanagon "Godfried"
85 Vanagon Westi
2003 10 Passenger Sprinter
Fancher's Upholstery Inc. - www.fanchers.com
Not-A-VW Club- http://mywebpages.comcast.net/jaransont3/notavwclub/
