Throttle switch

[Huw Powell]

Seconding Cody, test the switches' resistance, not voltage.

Unplug them and connect ohm meter.  Idle should be zero ohms at rest and 
infinite (open) if you open the throttle a crack.

WOT switch should be open at rest and close to zero ohms at about 2/3 
opened throttle.

- Huw

On 6/10/2013 8:03 PM, Al 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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