May 28, 200619 yr Since I found such a helpful site thought Id ask. Moms Sub needs a bank3 4 wire O2. Didn't know there was even a 4 wire out. Had bought her a uni 3 wire bosche kit off ebay for $20 but I'm one wire short. Just thought I should ask to make sure before I buy another $20 Bosche uni 4 wire kit. AZ wants $60+ for the sucker Also the O2 or light saying the bank 3 O2 was bad, was after I ran some marvelous mystery oil in the gas. At first I was able to make the light go out if I drove the car and got on it hard. Kinda blew it out. But its on constant now and gonna change it.
May 28, 200619 yr The only differences from the 4-wire & 3-wire O2 sensor is that the 4-wire sensor has a sensor ground as well as a heater ground, rather then grounding the sensor through the chassis. If you use a universal one, you need to make sure you solder the wiring good and seal it up so water doesn't get in.
May 28, 200619 yr Author The only differences from the 4-wire & 3-wire O2 sensor is that the 4-wire sensor has a sensor ground as well as a heater ground, rather then grounding the sensor through the chassis. If you use a universal one, you need to make sure you solder the wiring good and seal it up so water doesn't get in. Has anyone here done a thumbs up or down on that cold heat solder tool?
May 28, 200619 yr Has anyone here done a thumbs up or down on that cold heat solder tool? One word: Butane. GD
May 29, 200619 yr you'll find that you won't really be able to solder those wires... i tried a torch.. and it couldn't get it to take the solder... the universal kit somes with a little black box, and yellow thingers that go inside.. it's a paint but it seemed to work for me. I'd get a real soldering iron if i were you... stuff advertized on tv scares me
May 30, 200619 yr Andyjo, this sounds strange, but I'm glad to hear you couldn't solder the wires on the Bosch universal O2 sensor. I couldn't do it either, and thought I must be losing my soldering skills. The solder just wouldn't wet the wire no matter what I did. The wire must be aluminum or something else, definitely not the usual tinned copper. I gave up and used the fancy connector supplied by Bosch - it's complicated, but went together easily and looks like it will be durable.
May 30, 200619 yr Has anyone here done a thumbs up or down on that cold heat solder tool? Cold Heat = Thumbs Down in my book. I'm an electronics technician and bought one thinking it would be great for field work. The tip is basically a fork and only when you short the two sides together with what you are soldering will it heat up. Even then I wasn't confident I was getting proper heating. I would just use a corded iron. Keith
May 30, 200619 yr Author Cold Heat = Thumbs Down in my book. I'm an electronics technician and bought one thinking it would be great for field work. The tip is basically a fork and only when you short the two sides together with what you are soldering will it heat up. Even then I wasn't confident I was getting proper heating. I would just use a corded iron. Keith Ya know I had thought that for a while cause in one of the shots in the commercial you can see it spark. And from the spark it looked powerful. Maybe it just like a mini stun gun. Why it doesn't get hot. Just hi volts.
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