Date: Sun, 22 May 2016 11:31:35 -0700
Reply-To: Neil N <musomuso@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Neil N <musomuso@GMAIL.COM>
Subject: Re: 2.1 Throttle Switch Assmebly on 1.9 with later style switch?
In-Reply-To: <BAY180-DS22BEEE6138CC93D6F5BF62A04D0@phx.gbl>
Content-Type: text/plain; charset=UTF-8
John Morris: much thanks.
Dennis, as usual, excellent info
This Vanagon owner had the engine repaired by a pro shop who was "up for"
the challenge; they'd never worked on a WBX before. Based on what little I know
of major engine work on a WBX, it appears these guys did their best.
e.g. I see the
"Right Stuff" or similar sealant added to the coolant jacket seals.
They haven't supplied a list of what was done but a head or heads were off
and an " O ring " (owners terms) was replaced. This engine was seeing
oil in the coolant.
Point is, I'd suspected what with all good intentions, the shop may
have re-connected
a previously disconnected throttle body switch.
But I didn't know about the aux. air regulator plug being the same.
Excellent tip. The shop could easily have swapped those connectors.
The surge on decel or just off idle issue started after the engine
work was done as did
an idle issue; RPM's will randomly rise, hold, then drop.
It could very well be that the aux. air regulator
is connected to the throttle body switch plug.
Much thanks. At very least this might save her a long trip back to the shop
though they should make good on this. Her choice.
Neil.
On 5/22/16, Dennis Haynes <d23haynes57@hotmail.com> wrote:
> Especially on the 1.9 you can simply disconnect the throttle switch. It's
> only function at idle to cut off the injectors when the engine is being
> overrun such as coasting downhill or down shifting to slow the vehicle down.
> Since the cut off speed is low like 1,300 rpm, that is why you can get that
> idle surge if the basic settings are not correct. If you still get the idle
> surge or off idle stumble with the switch disconnected then it is most
> likely the connectors for the throttle switch and auxiliary air regulator
> was reversed. From the factory the blue connector goes to the switch and the
> black goes to the regulator, If the connectors were changed all bets are
> off. Easy way to check which is which is with a volt meter. With the
> ignition on the switch connector will have 5 volts and the auxiliary air
> regulator has 12 or battery voltage. It gets is power from the injector
> circuit. It is not fused so when connected to the throttle switch the switch
> is instantly destroyed.
>
> Dennis
>
>
>
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> Neil N
> Sent: Saturday, May 21, 2016 5:16 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: 2.1 Throttle Switch Assmebly on 1.9 with later style switch?
> Am helping a friend with a 1.9 WBX Vanagon. Her engine uses the later style
> throttle switch .........
--
Neil n
Blog: Vanagons, Westfalia, general <http://tubaneil.blogspot.ca>
1988 Westy Images <https://picasaweb.google.com/musomuso/New1988Westy>
1981 Westfalia "Jaco" Images, technical <http://tubaneil.googlepages.com/>
Vanagon-Bus VAG Gas Engine Swap Group <http://tinyurl.com/khalbay>
