Re: Project 4ktq update

[Todd Phenneger <phen9461@uidaho.edu>]

On Fri, 8 Oct 1999, Ti Kan wrote:

> If you're running the KH engine ECU (MAC-07A) then the code dumping
> stuff is very different than the MC engines.  The tachometer and
> the "check engine" light are the display for this, and the brake
> pedal is the control.

	Ahh, that explains why I had to wire that one into the brake
pedal.  Thanks.

> The Bentley manual for the 84+ 5000S/T/TQ has more details about this.
> What this all means as far as wiring is that the tachometer on
> the KH (and MC) cars are connected to the ECU, as opposed to the
> ignition coil as on the 4KQ.  I don't know if the 4KQ tach can be
> re-wired to the MAC-07A ECU and read correctly, but you can try.
> Also, there is a wire that runs from the MAC-07A to the brake light
> switch you need to add to make this all work.
> 
> You really do need to study the wiring diagram of both the KH cars
> (84/85 5000S turbo) and the 4KQ carefully and make sure you got all
> the details worked out.

	I know, but I cant find it.  Ive got most of it figured out buy my
wiring specialist (a friend) moved back home and I'm horrible with wiring
diagrams.  Getting much better after this project though. :-)
	Anyhow, I have the brake wire marked but I'll have to try the tach
thing and see if it works.  Thanks for the info.
	L8R
		Todd