 Oxygen Sensor, For the California Folks |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
| gfg3 |
 Apr 15 2016, 01:06 PM
Post
#1
|
|
Never Too Old  Group: Members Posts: 127 Joined: 5-January 15 From: Southern Virginia Member No.: 18,295 Region Association: None  |
I have a '75 1.8 FI car that originated in California. This car originally had an O2 sensor, but now it doesn't. I'm looking to replace that O2 sensor. I've been told that the O2 sensor hooked into some sort of relay which then ran back to the computer. First, is that correct? Second, does anyone have a photo of the O2 sensor hookup from the exhaust all the way to the computer? If there really is a relay in this scheme I could also use a picture or description of that relay too. Once I figure out what I'm looking for I'll try to find the parts. Thanks.
George |
   |
 
|
  |
Replies
| JeffBowlsby |
Apr 16 2016, 08:59 AM
Post
#2
|
|
914 Wiring Harnesses & Beekeeper Group: Members Posts: 9,222 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None 
|
Repeat after me - No 914 has an O2 sensor, No 914 has an O2 sensor...
Its a thermocouple as mentioned. And its not a relay back there by the tailights, its a small computer that looks like a relay that controls it. Find the circuitry to better understand it on the last page of this document: http://bowlsby.net/914/WiringHarnesses/Har...ssis_1975-6.pdf Your rich at idle condition could be related to other things...have you checked? * Leaky MPS? * TS2 accurate? * Leaking fuel injectors or CSV? PS just found this photo on CL, its FS is you want it: http://sfbay.craigslist.org/sfc/pts/5515698159.html Attached image(s) 
|
 |
|
| gfg3 |
Apr 16 2016, 12:00 PM
Post
#3
|
|
Never Too Old Group: Members Posts: 127 Joined: 5-January 15 From: Southern Virginia Member No.: 18,295 Region Association: None |
OK, thanks Jeff. Back to checking the usual suspects.
|
|
|
|
Posts in this topic
gfg3 Oxygen Sensor Apr 15 2016, 01:06 PM
914werke Indeed. the sensor was mounted in the Exhaust conn... Apr 15 2016, 02:31 PM
jcd914
Indeed. the sensor was mounted in the Exhaust con... Apr 15 2016, 05:00 PM matthepcat Does Virginia require you to smog it?
If not, pul... Apr 15 2016, 03:43 PM jim_hoyland IIRC that sensor is heat activated, not O2
FYI I h... Apr 15 2016, 09:35 PM PancakePorsche 75/76 California cars:
The relay in the trunk is t... Apr 16 2016, 12:00 AM gfg3 Thanks everyone for your comments - as usual, very... Apr 16 2016, 04:34 AM jim_hoyland Do the two red dash lights (cat / erg) light up wh... Apr 16 2016, 06:06 AM |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 2nd April 2026 - 10:22 AM |
Invision Power Board
v9.1.4 © 2026 IPS, Inc.