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Old 02-20-2002, 10:29 AM   #1
dug-e-fresh
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Location: 603 whp / EJ207
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13.7 @ 102, '09 spec.B

Question O2 Sensor In Up-pipe Melted...????

Ah, guys? What does this mean?

I got a new exhaust leak, so I got a chance to go under and check it out. Well the entire back of the O2 sensor was melted off.... this is why I had an exhaust leak!!

I hope that this doesn't mean my EGTs are sooo hot that the O2 sensor cant handle it.... or does it mean that the O2 sensor was faulty? I would think that any O2 sensor could withstand the heat from hell....ya know?

Well, I bought another O2, this time its a Bosch sensor. Looks to be much beefier than the NAPA part I had before. But do I need to worry about any type of heat range on these things? I didn't think so, but I dont want to put the Bosch one in just to have it melt, too.

I would appreciate any input!

Thanks
Doug

BTW- both sensors are/were a 1 wire unheated O2.
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Old 02-20-2002, 12:01 PM   #2
dug-e-fresh
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*whispers* Help!
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Old 02-20-2002, 01:04 PM   #3
8Complex

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Sounds like a bad part. I wouldn't worry about it unless you go through another, somehow.
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Old 02-20-2002, 02:02 PM   #4
HndaTch627
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sounds like a bad sensor to me, if you EGT's were that damn hot the pistons would have melted LONG before that.

jeremy
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Old 02-20-2002, 04:04 PM   #5
dug-e-fresh
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13.7 @ 102, '09 spec.B

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good point!
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Old 02-20-2002, 06:12 PM   #6
ColinL
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take a look at the sparkplugs. if the cc is hot enough to fry an oxygen sensor then the plugs will show it.

a backfire in the exhaust could explain the o2 sensor.
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Old 02-21-2002, 03:38 AM   #7
HndaTch627
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Quote:
[i]
a backfire in the exhaust could explain the o2 sensor. [/b]
a very good point colin

remember that your exhaust pressure is about 30% higher then your intake pressure so a backfire coupled with constant abuse of pressure might have cause it to come apart.

jeremy
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