Re: K24 and boost - more on WGFV

[Wallace White <wallace@remdesign.com>]

QSHIPQ@aol.com wrote:
> 
> Exactly.  My point is that the WOT switch should only be tested with an ohm
> meter.  The LED across the WGFV is a good way to fine tune the chip mod to
> your individual car.  Saying it's "100%" good for WOT switch test isn't
> really a valid statement IMO.

Hmm, I'm not sure I understand that. Are you saying that it's better to
test the switch itself, which you can only do while the car's not
running, than to test that the switch is having the intended effect,
which you can do with the car running?

I tested my WOT switch with a Fluke and found that it had less than an
ohm of resistance, every time I closed it, and thought that I didn't
need a new one. But at Phil's and others' suggestion, I hooked up the
WGFV test light, to see if the switch was really doing its job. Sure
enough, the WGFV was getting cycled _most_ of the time, but sometimes
I'd open the throttle and got no light at all.

I replaced the switch and continued to use the test light, just to make
sure that that was the problem. And indeed, the WGFV always gets cycled
now when I hit WOT.

Using a WGFV light may not test _only_ the WOT switch, but I think it's
an excellent test of it and the rest of the wastegate control system.

- Wallace
  '87 5kcstq 161k