|
|
|
|
| Author |
|
|
Now in 993 land ...
|
What happens if you disconnect O2 sensor (CIS)
81 SC. Fiddling with the wiring on the left side of the car. Yikes, the 02 sensor connector that bolts to the chassis is disintegrated and the connection fell off!
I passed smog with flying colors last spring. Does this mean the thing fell off since then? I guess I will have to get a used connector or hack something to re-establish connection. What happens if I drive it with 02 sensor disconnected? TIA, George |
||
01-09-2004, 06:27 PM
|
|
|
Registered
Join Date: May 2003
Location: Manhattan Beach, CA
Posts: 2,350
|
As long as the mixture is not too rich (CO>>2.5 to 3.0% before the CAT),
you should have no problem. The Lambda control unit will seek a neutral value of .50 volts, and thereby a neutral mixture determined by the mixture adjustment screw. Good Luck Loren '88 3.2
__________________
Have Fun Loren Systems Consulting Automotive Electronics '88 911 3.2 '04 GSXR1000 '01 Ducati 996 '03 BMW BCR - Gone |
||
|
01-09-2004, 07:03 PM
|
|
|
Metal Guru
|
George, your still messing around with that?
Get an exhaust gas aanlyzer and set the CO to 3-3.5%. When it's time to get tested set to 1% and drive gently to the testing station. You will pass the test easily. Drive slowly home, reset to 3-3.5%. I know someone in Arizona who does this every year. He doesn't have a cat either.
__________________
Paul B. '91 964 3.3 Turbo Port matched, SC cams, K27/K29 turbo, Roush Performance custom headers w/Tial MV-S dual wastegates, Rarlyl8 muffler, LWFW, GT2 clutch & PP, BL wur, factory RS shifter, RS mounts, FVD timing mod, Big Reds, H&R Coilovers, ESB spring plates- 210 lb |
||
|
01-10-2004, 04:19 AM
|
|
|
Now in 993 land ...
|
Paul!
It's not by choice man, I found the thing disconnected. Isn't that humorous? I am just wondering if I can hurt anything. The other thing is, is that connection somehow special? It looks almost like a HV connector. Very strange ... George |
||
|
01-10-2004, 09:24 AM
|
|
|
GFCC
Join Date: Apr 2002
Location: Phoenix, AZ
Posts: 1,785
|
Old question that was never really answered... if setting timing and mixture on an '82 3.0 would you just leave the O2 sensor disconnected and proceed or hook it up?
__________________
Jeff 1976 911 Coupe w/ Euro 3.0 - Sold 1987 Carrera Coupe - Sold 1999 Carrera Cabriolet - Current |
||
|
11-12-2006, 01:16 PM
|
|
|
I'm with Bill
Join Date: Jun 2005
Location: Scottsville Va
Posts: 24,186
|
I know a few people who run thier SC's with the sensor unhooked. It will go to a default setting that is a little rich. This is good for making power in our cars. It shouldn't hurt anything. Even with the 02 in line the correction value is only 20%
__________________
Electrical problems on a pick-up will do that to a guy- 1990C4S |
||
|
11-12-2006, 01:20 PM
|
|
|
1991 Porsche 964 Turbo
