Replace O2 sensor?

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Nov 17, 2008 | 05:16 PM

ragged claws

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From: Rio Vista ca.

Replace O2 sensor?

I'm going to dump the pre-cats on my '89 coupe and replace with a Mid America Y pipe and new high flow cat. I'm having a local mechanic do the work and I'm wondering if I should replace the oxygen sensor while he's got things taken apart. The sensor that's on the car works fine and I've only got about 56K on the car. If you all think that I should replace the sensor, what brand should I get and where should I get it? I thought that some folks here said to stay away from Bosch O2 sensors. What do you all think.

P.S. My mechanic said that after Jan. 1st all cats must be OB2, even on OB1 cars.

Thanks, Kim

Nov 17, 2008 | 06:13 PM

The Beep

Burning Brakes

Joined: Jan 2007

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From: Houston TX

My motto is "If it ain't broke, don't fix it."

Nov 17, 2008 | 06:25 PM

StealthLT4

Safety Car

Joined: Dec 2006

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From: St Marys GA

I don't even know what a cat being OBDII as opposed to OBDI means. That deals with computer diagnostic systems, not the cat itself...

And

. If it ain't broke, don't fix it.

Nov 17, 2008 | 07:35 PM

ragged claws

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From: Rio Vista ca.

Quote:

Originally Posted by StealthLT4

I don't even know what a cat being OBDII as opposed to OBDI means. That deals with computer diagnostic systems, not the cat itself...

And

. If it ain't broke, don't fix it.

I'm not sure what OBD1 or 2 means either. I thought that the later C4s had two O2 sensors while the earlier ones like mine have just the one ahead of the cat. Maybe some cats are rated for two sensors while others are rated for just one. Some enlightenment on the subject will be appreciated.

Kim

Nov 18, 2008 | 08:55 PM

HeeHaw89

Drifting

Joined: Jan 2002

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From: Middle River MD

Quote:

Originally Posted by ragged claws

Kim

If he really said that about the cats, find someone else to work on your car.

Nov 18, 2008 | 09:56 PM

The Beep

Burning Brakes

Joined: Jan 2007

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From: Houston TX

Quote:

Originally Posted by ragged claws

The sensor that's on the car works fine

That's all the information you need right there!

Nov 18, 2008 | 11:34 PM

RRT vette

Le Mans Master

Joined: Feb 2006

Posts: 8,753

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From: Louisiana

I'd replace it especially if you don't know how many miles are on it. The O2 sensor is a maintenance item anyway. It should be replaced every 30-40K miles.

Nov 19, 2008 | 08:26 AM

Muffin

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Joined: Jun 1999

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From: Merritt Ils Fl

Quote:

Originally Posted by HeeHaw89

If he really said that about the cats, find someone else to work on your car.

My thought exactly.

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Nov 19, 2008 | 09:51 AM

ragged claws

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Joined: Sep 2003

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From: Rio Vista ca.

Quote:

Originally Posted by RRT vette

I'd replace it especially if you don't know how many miles are on it. The O2 sensor is a maintenance item anyway. It should be replaced every 30-40K miles.

56K on the car. What brand should I replace it with, who's a good source for sensors, and what do they cost?

Thanks, Kim

Nov 19, 2008 | 10:12 AM

#10

StealthLT4

Safety Car

Joined: Dec 2006

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From: St Marys GA

If you're replacing them, I used Bosch from Advance Auto. Mine were like $50 because their the heated 4-wire design, but yours should be cheaper.

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