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#1
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02 sensor, How hard to replace?
I drive a '95 caprice w/ 125,000 and get horrible gas milage. I've been reading in the forums and I think I might need a new 02 sensor. I've changed the plugs, fuel filter, and it still only gets 10mpg around town. How do I know when to change the 02 sensor and how hard is it to replace? I can do basics like change my oil, transmission fluid, brakes front and back, and my spark plugs, so can I change the 02 myself?
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#2
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Re: 02 sensor, How hard to replace?
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What rear axle ratio do you have? The EGO sensor is no harder to replace than a spark plug - but don't change it without checking other things too. Do you get the service engine soon light on the dash?
__________________
1988 9C1 - Modified LM1 @ 275HP/350TQ - TH700R4 - 3.08 8.5" Disc Rear - see it at http://www.silicon212.org/9c1! 2005 Crown Vic P71 - former AZ DPS - 4.6 liters of pure creamy slothness! 1967 El Camino L79/M20 old school asphalt raper Remember - a government that is strong enough to give you everything you need, is also strong enough to take everything you have. |
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#3
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Re: 02 sensor, How hard to replace?
I have the L99, I'm not sure on the rear axle ratio, where can I find that info?
oh and the service engine light isn't on..... edit: BTW my temp. gauge isn't working properly, it stays on the left and only sometimes it reads the correct temp. Would that have anything to do with the mpg I'm getting? |
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#4
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Re: 02 sensor, How hard to replace?
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The smaller engine with the taller ratio around town could cause you to "stomp on it" more than the larger engine, resulting in poor economy. Since you said the SES light was NOT on, if it smells rich then there is definitely the possibility of an EGO sensor failure. These are typically on the driver's exhaust manifold near the dump.
__________________
1988 9C1 - Modified LM1 @ 275HP/350TQ - TH700R4 - 3.08 8.5" Disc Rear - see it at http://www.silicon212.org/9c1! 2005 Crown Vic P71 - former AZ DPS - 4.6 liters of pure creamy slothness! 1967 El Camino L79/M20 old school asphalt raper Remember - a government that is strong enough to give you everything you need, is also strong enough to take everything you have. |
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#5
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Re: 02 sensor, How hard to replace?
I just checked and it says "GU5"
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#6
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Re: 02 sensor, How hard to replace?
Quote:
__________________
1988 9C1 - Modified LM1 @ 275HP/350TQ - TH700R4 - 3.08 8.5" Disc Rear - see it at http://www.silicon212.org/9c1! 2005 Crown Vic P71 - former AZ DPS - 4.6 liters of pure creamy slothness! 1967 El Camino L79/M20 old school asphalt raper Remember - a government that is strong enough to give you everything you need, is also strong enough to take everything you have. |
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#7
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Re: 02 sensor, How hard to replace?
Could the EGO sensor be the problem why mine runs rich?
I got a duty cycle meter and my M/c duty percent was 58%
__________________
1987 Chevrolet Caprice classic Brougham. 142,000 on the 305 and still chugging
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#8
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Re: 02 sensor, How hard to replace?
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__________________
1988 9C1 - Modified LM1 @ 275HP/350TQ - TH700R4 - 3.08 8.5" Disc Rear - see it at http://www.silicon212.org/9c1! 2005 Crown Vic P71 - former AZ DPS - 4.6 liters of pure creamy slothness! 1967 El Camino L79/M20 old school asphalt raper Remember - a government that is strong enough to give you everything you need, is also strong enough to take everything you have. |
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#9
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Re: 02 sensor, How hard to replace?
are they real pricey, or can I get one for under 20$?
__________________
1987 Chevrolet Caprice classic Brougham. 142,000 on the 305 and still chugging
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#10
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Re: 02 sensor, How hard to replace?
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__________________
1988 9C1 - Modified LM1 @ 275HP/350TQ - TH700R4 - 3.08 8.5" Disc Rear - see it at http://www.silicon212.org/9c1! 2005 Crown Vic P71 - former AZ DPS - 4.6 liters of pure creamy slothness! 1967 El Camino L79/M20 old school asphalt raper Remember - a government that is strong enough to give you everything you need, is also strong enough to take everything you have. |
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#11
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Re: 02 sensor, How hard to replace?
I just checked prices with autozone and napa and they were $55.99 each
![]() It says I need two, is that true? Does anyone know of any online sites that would be cheaper?
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#12
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Re: 02 sensor, How hard to replace?
Try www.RockAuto.com, they seem to have pretty good prices.
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#13
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Re: 02 sensor, How hard to replace?
Do I need two oxygen sensors or just one????
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#14
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Re: 02 sensor, How hard to replace?
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If one is bad, I'd do 'em both. To attempt to save some $$$ by only doing one is what we call "false economy". You spend less in the long run when you spend more to do it right the first time.
__________________
1988 9C1 - Modified LM1 @ 275HP/350TQ - TH700R4 - 3.08 8.5" Disc Rear - see it at http://www.silicon212.org/9c1! 2005 Crown Vic P71 - former AZ DPS - 4.6 liters of pure creamy slothness! 1967 El Camino L79/M20 old school asphalt raper Remember - a government that is strong enough to give you everything you need, is also strong enough to take everything you have. |
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#15
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Re: 02 sensor, How hard to replace?
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