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posted by
someone claiming to be nueezv
on
Sun Feb 28 16:02 CST 2010 [ RELATED]
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LEcGsp gnhmjdewdfmh , [url=http://lghycqldanku.com/]lghycqldanku[/url], [link=http://kgejujcxtaer.com/]kgejujcxtaer[/link], http://fxrknpibwmyt.com/
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I agree, you don't need a new cat, just a good welder. That crack probably happened because the rear hanger failed a long time ago and it found a weak spot in the exhaust.
If you cannot take off the pipe yourself, find a good reputable shop and let him know that you want it welded. The welding should cost less than $50.
Klaus
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Proud owner of a 220S. If I had more room, I would have more Volvos.
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MAke sure they put the Ground strap of teh welder close to where they are welding OR unplug your computer.
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'75 Jeep CJ5 345Hp ChevyPwrd, two motorcycles, '85 Pickup: The '89 Volvo is the newest vehicle I own. it wasn't Volvos safety , it was Longevity that sold me http://home.lyse.net/brox/TonyPage4.html
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>>If you cannot take off the pipe yourself, find a good reputable shop and let him know that you want it welded. The welding should cost less than $50.<<
Thanks, Klaus. Given the current conditions (wintry cold, rusted nuts/bolts, tight space with ramps), I would prefer to have it done in a shop. When you say 'reputable shop', I assume you are referring to a welding shop (not a muffler shop)?
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Brian M. - 1998 S70GLT, 1998 S70 GTA
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Welding shops do not know how to take the pipe off without busting off the bolt heads. I meant to suggest a good auto mechanic shop, and have the piece welded at a welding shop.
Klaus
Really good pics, by the way.
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Proud owner of a 220S. If I had more room, I would have more Volvos.
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Thanks, Klaus!
I forgot to mention that I got the code P0133 (Oxygen Sensor Circuit Slow Response) yesterday. I cleared it. I got the same code ONCE two months or so ago and I cleared that.
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Brian M. - 1998 S70GLT, 1998 S70 GTA
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LOL, that is because of the air leak in front of the CAT. The O2 sensor is getting coated with soot due to the lack of heat that is supposed to be generated by the CAT.
If your car was in my garage, I would be soaking the bolts with PB Blaster twice a day for a few days.
Klaus
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Proud owner of a 220S. If I had more room, I would have more Volvos.
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I just had the welding done yesterday and the car ran nice and quiet. I had the same indy Volvo shop that installed the new muffler do the welding on the cat.
But, when I started the car this morning, I got two error codes:
P0136 - 02 Sensor Circuit Malfunction (Bank 1 Sensor 2)
P0141 - 02 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
I cleared the codes, drove off, and arrived at our destination 1-hour away. After being parked for over 2 hours, I started the car and the same codes showed up after a couple of minutes driving.
What now pray tell? :-)
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Brian M. - 1998 S70GLT, 1998 S70 GTA
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Check the wiring/plug for the front O2 sensor, it is just before the cat. The shop may have unplugged it and forgot to plug it in.
Klaus
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Praying for Cynthia Amendt, heaven bound
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I dropped by the shop this morning and they read the codes and then reset it. I mentioned that the connections might probably be loose, and they said no. I still have yet to check underneath (it's snowing right now and we don't have a garage).
They got the same codes I got and was told that if the CEL came back, I might need a rear sensor, and possibly a front one as well. He said that driving with the cracked converter pipe could've burned the sensor (I think that's what he said).
Well the two codes are back. Not sure what to do for now until I could check the connections.
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Brian M. - 1998 S70GLT, 1998 S70 GTA
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The FRONT O2 sensor not working does not effect drivability, but it might make the engine run rich. The reason your CEL came on so fast is the second code for heating up the sensor. It is also why your wiring should be checked. A small nick could cause it to be grounded, or dirt in the plug could have caused the lack of electrical continuity.
The REAR O2 sensor seldom goes bad and would not have caused the heat error.
I suggest driving the engine hard for a while, build up some heat in the exhaust, to try to clean off the carbon deposits on the front O2 sensor. If the front O2 sensor is original to the car, it might just be time to replace it.
Klaus
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Praying for Cynthia Amendt, heaven bound
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Just looked up the Volvo-specific P codes (DTC):
P0136 - Rear heated oxygen sensor (H02S) - Signal missing. Either intermittent fault or permanent fault
P0141 - Rear heated oxygen sensor (HO2S), preheating - Faulty signal. Either intermittent fault or permanent fault
Just wanted to make sure of what you were saying -- the front sensor is causing the fault codes?
(Klaus, thanks so much for your help and suggestions)
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Brian M. - 1998 S70GLT, 1998 S70 GTA
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Sorry. Too lazy to look up the codes, and false assumptions. Still, the plug and wires need to be looked at.
With a hole in front of the CAT, the rear O2 didn't get that much polluted air and also didn't get hot enough to burn off the dirt. Run the car for a while anyway and see if the dirt burns off. Erase the code next week.
Klaus
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Praying for Cynthia Amendt, heaven bound
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Looks like they didn't take the Pipe off to do the weld. My daughter could probably do a better job.
Is the first picture the top? Looks like they missed a huge part. That little hole will soon be a BIG hole in the middle picture.
As to the rear O2 sensor... If the pre heater doesn't work, it is either not getting getting its signal to the ECU or it has totally failed.
Klaus
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Praying for Cynthia Amendt, heaven bound
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The 1st pic (top) was taken from the right side. The 2nd pic (middle), with the WET SPOT message, was taken from beneath the converter.
If the sensor has failed, is it more likely cause by the repair or possibly due to age?
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Brian M. - 1998 S70GLT, 1998 S70 GTA
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The rear O2 sensor usually lasts longer than the front O2 sensor. Both have lives affected by rich running engines, improper heat ranges, etc. Any O2 sensor living longer than 130K has done its job.
But with holes still in the exhaust, I wouldn't bother fixing the sensor until the holes are also fixed.
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Praying for Cynthia Amendt, heaven bound
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I'd say it's possible/likely the damage occurred during the recent exhaust work, but the cause was the age of the pipe. It was going to happen whether you took it to that shop or any other or not at all.
You don't need a new cat though. Take it to a good welder and they'll fix it right up. You can save yourself a bundle of labour costs if you take the pipe out yourself and take it to them. They won't be able to mend it while it's still on the car.
Don't take it to a "muffler shop" unless you really have to. Find someone who's sign says "welding" on it.
PS - the same thing happened to mine a few months ago:
http://www.brickboard.com/AWD/index.htm?id=1377451&show_all=1
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1998 V70 AWD->FWD Turbo 200k+
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Thanks for the info, Joel! This is a comforting to know.
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Brian M. - 1998 S70GLT, 1998 S70 GTA
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