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Need a little help please!

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Old May 7, 2005 | 12:58 PM
  #1  
92ZR1WANNABE's Avatar
92ZR1WANNABE
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From: Casa Grande Az
Default Need a little help please!

After driving to and from work last night, i noticed that the car's exhaust was smelling kinda "gassy" ..... like burn your throat gasy.

Then when I get back into town , i notice that their is soot marks near BOTH tailpipes on the rear bumper, so it was not my imagination .

What would be the best place to start with thist problem. I have had the car 2 weeks. It ran great until today. Now keep in mind , i have put more miles on the car in the last 2 weeks then has been put on the car in the last 3 years. (Naughty i know )

Anyway , any suggestions would be great. I am going to hit autozone ina bit and pick up a OBD / OBD II scanner, and hopefully that can point me int he right direction.


THanks!
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Old May 7, 2005 | 01:43 PM
  #2  
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stevec4
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From: Las Vegas / Scotland
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What year?

A decent scanner should tell you what's going on but check all vacuum hoses for splits (especially if its an AZ car)

Pull the plugs and see what condition they are in - see if one bank differs from the other.

Make sure EGR pipework is secure.

Just a couple of ideas to start with - keep posting as you find stuff and we'll come up with more suggestions for ya.
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Old May 7, 2005 | 01:47 PM
  #3  
92ZR1WANNABE's Avatar
92ZR1WANNABE
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Ya my bad, Its a 92

I am headed to the store to get a scanner right now ...
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Old May 7, 2005 | 03:13 PM
  #4  
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92ZR1WANNABE
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Just ran an Auto Xray scanner on it. No codes tripped. But still smells very very rich.
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Old May 7, 2005 | 03:21 PM
  #5  
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OrthoAggie
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does it idle correctly? oxygen sensors?
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Old May 7, 2005 | 03:31 PM
  #6  
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92ZR1WANNABE
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Idles ok, I kinda thought about the O2 sensors myself . But is it possible for them to just both give up the ghost at the same time?
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Old May 7, 2005 | 06:50 PM
  #7  
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ittlfly
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From: Sun City West Az
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with an Auto Xray you should be able to access the BLM's and the intergrator values. If both your BLm's are well north of 128, then the ECM is adding fuel as the O2's see a lean condition. Look at both O2 values to see if they are living most of the time below 450mv. If this is the case then you may have a vacuum leak which is fooling the ECM into a rich condition.
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