O2 Sensor Cold Welded to sensor bung
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Road Captain
Joined: Jun 2008
Posts: 530
Likes: 2
From: Hereford, Arizona
O2 Sensor Cold Welded to sensor bung
Bikes got 700 miles on it. I'm installing a set of Samson Ripsaws and the front O2 sensor was cold welded to the bung on the stock pipes. Sensor is ruined. Is this a common problem?
Big Kahuna HDF Member
Joined: Apr 2008
Posts: 38,428
Likes: 896
RE: O2 Sensor Cold Welded to sensor bung
May have cross threaded it when they instaled, or possibly it was loose and the vibration caused it to weld. I would think with only 700 miles it should be a warranty issue.
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Road Captain
Joined: Jun 2008
Posts: 530
Likes: 2
From: Hereford, Arizona
RE: O2 Sensor Cold Welded to sensor bung
Took the sensor into the dealer today. Got expected response. I'm betting dealers get tighter and tighter. I was miffed after paying over 20k at this dealership to be dissed for a lousy $43. I did tell them I hadn't sent in my dealer satisfaction form yet. They didn't care. What really got me was I never talked to the 'warranty guy'. I had a service fellow who kept going back and forth between us.
Dealership: Superstition Harley Davidson Apache Junction Arizona.
Very disappointed in my first Harley purchase.
Won't be returning to dealership for anything and won't recommend them to anyone. Hope they got their 43 bucks worth.
Now as an aside they did say they would honor warranty IF I brought the bike back to them and let them install the new o2 sensor in the stock pipes. I told them the entire exhaust was off of the bike and it wasn't rideable. My guy said we'll come pick it up. I said this is all fine and dandy but I'm putting on a new set of Samsons and don't want the stock exhaust system. He explained that this is the best they could do. I didn't want to explain that my stock pipe was as bunged up as the o2 sensor. At this point I would have never agreed only because I feel they would have laid out this big story about we found this and that and you'll have to pay X amount of dollars only to end up paying way more than the lousy 43 bucks.
I paid the lousy 43 bucks and left.
Dealership: Superstition Harley Davidson Apache Junction Arizona.
Very disappointed in my first Harley purchase.
Won't be returning to dealership for anything and won't recommend them to anyone. Hope they got their 43 bucks worth.
Now as an aside they did say they would honor warranty IF I brought the bike back to them and let them install the new o2 sensor in the stock pipes. I told them the entire exhaust was off of the bike and it wasn't rideable. My guy said we'll come pick it up. I said this is all fine and dandy but I'm putting on a new set of Samsons and don't want the stock exhaust system. He explained that this is the best they could do. I didn't want to explain that my stock pipe was as bunged up as the o2 sensor. At this point I would have never agreed only because I feel they would have laid out this big story about we found this and that and you'll have to pay X amount of dollars only to end up paying way more than the lousy 43 bucks.
I paid the lousy 43 bucks and left.
Road Master
Joined: Jul 2007
Posts: 965
Likes: 1
From: Shreveport,La.
RE: O2 Sensor Cold Welded to sensor bung
I feel your pain. Thing is, in building old Hot Rods and trucks for years you run into this problem often. Sometimes the best wrench for these problems is HEAT. I've found a pinpoint tip on a torch will release tight header bolts and exhaust attachments almost everytime.
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Road Captain
Joined: Jun 2008
Posts: 530
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From: Hereford, Arizona
RE: O2 Sensor Cold Welded to sensor bung
You're right capt775. The funny part is the sensor broke free fairly easily. It was after that that I felt resistance. The service manual makes no reference to applying heat to remove the sensors but then again the service manual leaves much to be desired.
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Road Warrior
Joined: May 2007
Posts: 1,620
Likes: 117
From: ARIZONA
RE: O2 Sensor Cold Welded to sensor bung
Happens all the time. 3.0 engines in Lexus cars and \\; SUVs are notorious for stripping out in the bung when trying to replace them. Seen it enough times that I unfortunately have to recommend the header with it too. Heat doesnt really do much for us. The threads deepest in the bung warp enough and the threads in the header are weakened enough that the thread come right out. or it gets seized a sorry wad of metal is legft in your hands. fun.
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Road Captain
Joined: Jun 2008
Posts: 530
Likes: 2
From: Hereford, Arizona
RE: O2 Sensor Cold Welded to sensor bung
Well hopefully I won't be pulling the Samsons anytime soon. Got my first ride this morning and man what a sound. More power on tap too. All I've done so far is put in Xied's and the Samsons. No popping on decel, no surging, just good vibes and power. I don't think it can get much better than this.
