[DMCForum] Re: My first tune up: Making progress, not quite there yet

[Ryan Wright <ryanpwright@xxxxxxxxx>]

OK, the Lambda system is working now. I dialed it in to an average
reading of 45 on my dwell meter - it swings from ~35 to ~55 give or
take.

Problem: I had to dial the co even leaner than it already was to get
the lambda system right. This was surprising to me, as I'd thought the
"glug glug" noise was due to a lean condition and that proper
operation would be found at a richer setting. Now, the "glug glug" is
slightly worse than it was.

Now what?! I'm going to take a break for awhile... :)

-Ryan

On 2/5/06, Ryan Wright <ryanpwright@xxxxxxxxx> wrote:
> I've made some progress: Turns out the full throttle switch is bad and
> shorts to ground regardless. That's why the lambda system wasn't
> taking control of anything. I've disconnected the switch for now.
>
> Current issues:
>
> 1. With the full throttle switch disconnected, the dwell meter drops
> way down - not quite to zero, but close. It still doesn't pulse. It
> does sit on center when cold and goes down low when warm.
>
> 2. The frequency valve quits buzzing when I disconnect the full
> throttle switch! So the lambda unit isn't doing anything with the FV.
> If I plug the switch back in (make the system thing it's at WOT) the
> FV starts buzzing again.
>
> 3. Where the full throttle switch plugs into the wiring harness, there
> is place for two connections. One is for the switch - what's the other
> for? Mine is disconnected.
>
> Now what do I do?
>
> -Ryan
>

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