Throttle switch

[al]

It is a 1990 80 non-Q, 3A.. Ok, I will check continuity. The two switches, 
one under the TB and one on top that opens the further you open the 
throttle.
Thanks, Cody.

Al
Honolulu

-----Original Message----- 
From: Cody Forbes
Sent: Tuesday, June 11, 2013 3:19 AM
To: Al
Cc: Quattro
Subject: Re: Throttle switch

What car do you have again? They vary between having one part with both 
switches and having two separate switches.

Also, checking continuity rather than voltage is a better way to check a 
switch. It should vary between an open circuit (infinite ohms) and a closed 
circuit with close to 0 ohms. Checking voltage is valid, but only if the 
voltage supply and ground are known to be perfect.

-Cody Forbes (mobile)

On Jun 10, 2013, at 8:03 PM, "Al" <streichea001 at hawaii.rr.com> wrote:

> I have been having problems with the first start of the day. I won’t start 
> on the first try, runs a few seconds and dies. Then it takes a long 
> cranking period before it finally fires, acting like it’s too rich.
>
> I pulled the codes and only got one, 2344 or air leak. Valve cover. I 
> fixed that this weekend and erased the code.
>
> This morning same thing but no codes. Ok, I fixed the air leak.
>
> I took out my Bentley, my home made VW1501 and checked the idle and full 
> throttle switches.
> The idle shows 0 volts when closed and no battery  voltage when I open the 
> throttle.
>
> Full throttle closed shows approximate battery voltage and 0 volts when 
> completely open.
>
> Looks like I need a new throttle switch. I checked the FA and it only 
> shows the upper (full throttle) switch. Part number 026-133-093D. Are the 
> two switches on the cable assembly?
>
> I pulled the codes again and no faults. (4-4-4-4)
>
> Al  Honolulu
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