led

I know this has been the subject of a lot of posts but I can't seem to get the search function to find any of them...

I want to get a universal sensor for my 944 and one for my neighbor's, an '84.

Looking at paragon's site I can see a 3-wire and a 4-wire sensor for later models. IIRC, the 3-wire is the one I'm looking for, but what's the difference between both? Also, is the 3-wire with connector kit worth the extra ~$20?

As for the '84, I only see a 1-wire universal so I guess that's it... right?

TIA,
Luis

Kevin Baker

The specific part is something like $230, there is a Bosch universal: 0 258 003 913 009 or it may be 13913, those are the #'s on the box. Just splice it in as it will not have the long pigtail, or proper connections it should run $58-60.

led

Yeah I saw the price difference but wanted to know the difference between the 3 and 4 wire universal sensors and if the 1 wire is the one for an early 944.

Skip

4-wire is for greater accuracy for modified Turbo cars - not really much of a difference.

Either of the universal 3-wire will work. I can't make any more of a case for the connector kit than what you read on the site. It's recommended but not required.

The 1-wire is correct for the 84 *if* it is not a California model. Best to visually check it if you're not sure - these cars can come from anywhere.

Good Luck!

Mongo

Check out Skip's O2 sensors. I got one from him a while back and it worked great!!! That is until the car got wrecked I am running a 3-wire universal too. Best way to save about 140 bucks if your car is a California car, if not, you'll save still 70 bucks

Andy

led

Great that's just what I wanted to know, thanks guys!

Charlotte944

Go to Pepboys or NAPA and ask for a Bosch 13913 three-wire sensor. Should run you about $40.00.

Cut the wires and use BUTT splices (DO NOT SOLDER). The black is the sensor lead, the white are the heater leades. To get 12 volts to the heater, get a two pole male/female bullet connector. The early cars have this connector very near the O2 sensor connector at the centerline of the fire wall. Later cars have the harness wired for a heated sensor, so all you need to do is cut and splice.

If you have trouble getting the old sensor out, get an 18mm/14mm spark plug thread chaser (about $5.00 at PepBoys), and use the 18mm end to chase the O2 sensor bung threads before you install a new sensor.

Yabo

All good advice here. I just did this about a week ago. I got the 3 wire from autozone for about 75 maybe. Not sure what model number it was, but it was recommended in the thread I had posted on it. Well it basically consisted of cutting the old wire off your 02 sensor and connecting it to the new one, so that you use the same plug. It wasn't too difficult, but, the connection kit bosch supplied with it I thought was a piece of crap. I used it and it's fine, I just thought they could've made it much simpler. I'm not a fan of plastic screwdown crimps. I'd prefer just to crimp a real connector on. But good luck!