CIS Wiring Diagram?

[911Ken]

Does anyone know where can I find a CIS wiring diagram? Either a manual, internet site, etc.

Not getting any power to my lambda brain. Replaced the relay, the 5A fuse is good - interior dome light works. Also replaced fuel pump relay.

Thanks,
Ken

[Groesbeck Hurricane]

Ken,

There are diagrams on this site under electrical diagrams. The (sigh) Haynes manual has diagrams as does the Bentley. I'd suggest you buy both manuals and the 101 Projects and the Engine Rebuild book.

What are your symptoms.

[911Ken]

Hey David,

I have a very rough running '81SC 3.0. Through some other threads, I've determined that I may have a problem with the lambda brain. Others suggested that I replace the relay and make sure that I have power which comes from the 5A fuse that runs the interior lights. I've run the engine with and without the relay plugged in and there was no change in perforamce. Still soem bucking and backfire at initial start-up. When running when warm - not getting full power when accelerating from 3K-4.5K rpms. Warm-up regulator replaced less than a year ago. Also don't here that humm from the frequency valve...

I was hoping that when I replaced a bad cat with a Fabspeed cat-by-pass and B&B tri-flow muffler that I was going to see that 15% HP gain. It was only a little better...

Can you post a link to the wiring diagrams as I've got a friend coming over tomorrow to run some more diagnostics....I have 101 Projects, and the Bentley book ought to arrive in the next day or two. What is the name of the Hayes manual - I'll look for it on EBay.

Thanks for any help! I'm very frustrated.

Ken

[bit]

Hi guys,

Below is a link to a thread I created a few weeks ago when I had a problem with my lambda brain and freq valve. Maybe it is the same problem you are having?

Frequency Valve and Lambda computer testing. Please Help.

.Steven
1980 911SC