VW Parts says the change to a single switch happened early in the 85
model year production, mid Sept 84. So the vast majority of 85 would
have the later single switch.

Mark

Stuart MacMillan wrote:
> My '85 with a build date of 8/84 has the two switches. Missed the cut, and Tyler's might have too.
>
> Stuart
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Dennis Haynes
> Sent: Saturday, April 16, 2016 12:32 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: Engine stalling at high speed
>
> The 2 separate throttle switches was replaced with the single cam switch somewhere mid 84. All 85's have the later set up. 86 with the 2.1 also go a larger throttle plate.
>
> However speaking of blockages a catalyst that is broken down into ta golf ball size chunk can also block the exhaust causing engine shut down. If exhaust can’t get out air can’t get in.
>
> Dennis
>
>