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post #1 of 5 (permalink) Old 07-13-2003, 12:21 PM Thread Starter
 
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Upstream sensor?

I was told that the upstream sensor (I assume between the cat converter and the engine) is the one that is bad.

Dealer wants $225 just to put one in. I think this is the easier one to get to, isn't it. How would I replace the upstream sensor?

Also, I thought the 3.5L had 4 sensors, two before the converter (upstream) and two after (downstream), is that correct?

Where is a good place to get them and what brand?
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post #2 of 5 (permalink) Old 07-13-2003, 12:23 PM
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Re: Upstream sensor?

Quote:
Originally posted by psal2
I was told that the upstream sensor (I assume between the cat converter and the engine) is the one that is bad.

Dealer wants $225 just to put one in. I think this is the easier one to get to, isn't it. How would I replace the upstream sensor?

Also, I thought the 3.5L had 4 sensors, two before the converter (upstream) and two after (downstream), is that correct?

Where is a good place to get them and what brand?
But them at Autozone (the one here sells them for $39.99 each) Yes you have 4 O2 sensors. 2 up, and 2 down. As far as you replacing them; I have no clue: You have a 1st gen Intrepid.
P.S.
They are relatively easy to change out in my car, so for yours.... it shouldn't be a problem either.
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post #3 of 5 (permalink) Old 07-13-2003, 01:11 PM Thread Starter
 
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Upstream is the one between the coverter and the engine, correct?

Did you get OE or Universal?
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post #4 of 5 (permalink) Old 07-13-2003, 03:55 PM
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Quote:
Originally posted by psal2
Upstream is the one between the coverter and the engine, correct?

Did you get OE or Universal?
Yes, The upstream 02 sensor is before the cat. converter. (<<~~ Thats how it is for a 2nd gen anyways)
Oh no, my 02 sensors have not fouled on me... yet that is. :crazy:
But at A/Z I did recall seeing BOSCH brand.
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post #5 of 5 (permalink) Old 07-13-2003, 09:43 PM Thread Starter
 
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Yeah, Bosch has several numbers. I need to look up the upstream number, something like 35139 or 35311 or something.
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