Bosch o2 sensor, why are they bad??? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 10-16-2005, 05:03 PM   #1
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Default Bosch o2 sensor, why are they bad???

Im just curious why alot of your opinions go against the bosch sensor I've always consitered Bosch to be a pretty reliable brand. For instance my Mom has a Bosch mixer that is 30+ years old and has never even needed as much as brushes in the motor, its kind of funny that a wedding gift outlives the marriage by about 13 years LOL. Anyways about the sensors please, thnx
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Old 10-16-2005, 08:15 PM   #2
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Not shure why, just alot of members here have had failures with bosch.

stick with AC delco when it comes to O2'*
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Old 10-17-2005, 04:59 AM   #3
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I can't speak specifically on the Bosch, but if the problems are similar to the Borg/Warner...I went through 2 in a year and a half. The first one died in about three months. The warranty replacement about a year later. I'm now back to the AC/Delco. Hopefully, this one will last longer. Just put it in about 4 months ago.
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Old 10-17-2005, 11:46 AM   #4
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I had a Bosch fail in 30 days. jr's3800 did too, but I recall his lasted 3 months. Many others also.

If you want to, be my guest, but we've had at least 50 early failures and none that I can recall lasted 6 months.
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Old 10-17-2005, 12:28 PM   #5
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I planned on going with the OEM sensor by the bad Bosch opinion around, but just wondered why, thanks.
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Old 10-17-2005, 03:16 PM   #6
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I installed bosch plugs in my first Bonneville the day after I bought it..aka the day before i signed up here
3 months, the car had a bad idle, and a bit of a miss, i changed the plugs over to the cheapy AC delco OEMs, problem solved. Mind you the car ran excellent after I installed the Bosch plugs, i would of just assumed they would of lasted more than 3months/3000kms lol.
From what I have seen other members on this club deal with when it comes to bosch over my last 2.5 years, I have seen they haven't proven to be really good in our application. I stay away now, 02 sensors are either Delco, or NTK (divison of NGK), same with plugs, NGK, AC Delco, and autolite.
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