1985-1998 [Subscribe to Daily Digest] |
About 23 or 24 mpg, combination of town and highway.
Also, lots of carbon deposits on inside of tailpipe. However, plugs didn't look that bad.
Idle was rough, and now it's much better.
I got the universal 3-wire Bosch O2 sensor from sobstory.com for about $29.00 US, if I remember right. Considerably better than OEM price. However, the wires on the universal are short and have to be spliced into your existing wiring harness. I guess the OEM unit supplies the whole wiring harness, too.
The wiring enters the engine compartment to the driver's right of the torque arm, curves down behind the torque arm and along the crankshaft pulley end of the engine block. You'll need to remove the front half of the wheel well housing. The back half is hard to put back in, so I'd recommend leaving that alone. Once you get the housing off, you'll see the wiring harness held down by two clips, which you can easily lever off with a screwdriver. This gives you some slack, which you will need.
Below the A/C compressor, the harness comes through a rubber grommet. Cut off the old wires at the old O2 sensor on the exhaust downpipe, strip and solder your ends. If you try to skip the soldering part, like I did originally, you'll be frustrated later. You'll need some sort of insulating shrink tubing covering for the wires to keep out water. I found some shrink tubing crimp connectors at Ace Hardware for too much money, and I also used some of that rubberized heat shrink tubing over each wire. However, it's hard to get your crimping device in there, so you may opt for solid metal bullet connectors that you solder in, covering later with the shrink tubing.
So first put your shrink tubing on each wire, make your connections, shrink down your shrink tubing with a hair dryer, apply anti-seize compound to your O2 sensor threads, put five counter-clockwise rotations on the wiring, then screw it in. That said, I found it wasn't as easy as it looked to get the threads to engage, so I ended up using about two of my counter-clockwise rotations I had put in. So there was a little residual twist to the wires, but it wasn't bad.
Pull your wiring back through the grommet to where it was, re-attach your clips, and happy motoring. Oh, I got my check engine light to shut off by taking off my negative battery terminal overnight. Then of course I had to hunt for my radio code....
good luck.
posted by 208.212.8...
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.
![]() |
![]() |
![]() |
![]() |
![]() |