Facelift and Upgrade for CIS Primer

[Jim Williams]

I have just uploaded a major makeover to the CIS Primer. Some pages may still need some minor mods, but all the Menu Items should have a link to a new page, some with previously posted info, some with new info.

The old URL is still valid:

911 CIS Primer - Index

There is newly posted info on the Lambda system, and I hope to have new info to add when I can get it together.

I will be filling in with more info over the next weeks. Right now I need a break.

[Bob Kontak]

Thank you, Jim.

I am looking forward to going through it.

How much time did the upgrade take?

[Jfporco]

Jim, excellent rework, I have been on it twice already!
Thank you for your expertise.
And I might add a damn fine first name too!

Jim Porco
'75 Targa

[bpu699]

great info! Very helpful.

[enzo1]

Cool!

Jim,

Thanks for sharing your knowledge. A great help for many of us!

Otto

'78 911 SC Targa

[Jim Williams]

Originally Posted by Bob Kontak

Thank you, Jim.

I am looking forward to going through it.

How much time did the upgrade take?

On and off, since last December. No record of hours spent, but way more than a few. Especially if you count all those hours slaving over a hot Lambda ECU on the workbench with all those voltmeters, ammeters, ohmmeters, dwell meter, duty cycle meter and old oscilloscope. And don't forget the hot soldering iron.

[Bob Kontak]

Originally Posted by Jim Williams

On and off, since last December. No record of hours spent, but way more than a few.

Outstanding effort. Thanks again.

If I was able to do what you did, I would have kept a beer count. :-)

[jchris]

Thanks for your work!

I reference your page embarrassly often!

[jchris]

That was supposed to say embarrassingly! I'm afraid spell check has ruined me.

[tirwin]

Jim, great job!

I think you just obsoleted my CIS for Dummies thread.

One question. On the Lambda CIS description page you say that the Lambda system does not have a vacuum connection for the WUR. I have an '83 with type -090 WUR and it does have a vac line. So is that correct?

[boyt911sc]

Originally Posted by tirwin

Jim, great job!

I think you just obsoleted my CIS for Dummies thread.

One question. On the Lambda CIS description page you say that the Lambda system does not have a vacuum connection for the WUR. I have an '83 with type -090 WUR and it does have a vac line. So is that correct?

Tim,

Are you sure? Are we talking the same WUR-090 you sent me? The WUR-090 for '81-'83SC's (US models) have no vacuum port. Could you post picture of the said WUR? Thanks.

Tony

[tirwin]

Tony,

Yep, I'm sure. I even went to the car to double check. I am on my phone now so I can't post the pictures but will later.

I know for certain it is the same one and I distinctly remember taking off the vac line adapter before I mailed it.

Wow, this is strange then...

[1982911SCTarga]

An "090" has a throttle-body vacuum connection, but it's there only as a scavenge/safety device if the warm-up regulator were to fail and leak internally (it sucks up fumes and fuel). The vacuum line hook-up does not affect operation of the unit.

Brian

[tirwin]

And there we have it! Thanks for the clarification, Brian.

[Ronnie's.930]

Originally Posted by tirwin

Jim, great job!

I think you just obsoleted my CIS for Dummies thread.

One question. On the Lambda CIS description page you say that the Lambda system does not have a vacuum connection for the WUR. I have an '83 with type -090 WUR and it does have a vac line. So is that correct?

Maybe the 930 Lambda setup is not discussed in the CIS Primer info (I haven't looked at it closely), but their WURs do have a vac line/port for boost enrichment . . .

[Jim Williams]

I just discovered a Missing Link on the Primer. It was to a page under Electrical showing the electrical connections for the Lambda ECU. This was on the old Primer edition, but I missed posting the link in the new menu.

I am also close to having a re-pro version of the K-Jetronic Troubleshooting Guide ready for printing. Email if anyone is interested in a copy. This was out of print years ago, and I have a personal letter from PCNA that it will not be re-issued.

There is a web-based version on the CIS Primer site at:
Notebook Spiral

[snbush67]

Thanks Jim! I am a fan of your primer.

[thumbdoctor]

Thanks for all your efforts Jim, invaluable stuff !

[prebordao]

Outstanding job !