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S-10 & Blazer 1982-2005
The S-10 and Blazer was arguably the most versatile and accessorizable mid-size truck and SUV on the market.
Platform: S/T-series & GMT 330

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  #1  
Old 12-05-2011, 05:12 PM
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Default Emission failed

I have 1994 chevrolet s-10 Blazer.
Emission was failed for HC too high.
I replace EGR valve, and ECM with PROM.
Cause EGR didn't get signal from ECM, but still don't get.
and I replaced catalytic converter 2yrs ago.

NO limit 938 my car reading 2963
HC limit 141 my car reading 15
CO limit 1.14 my car reading 0

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Old 12-06-2011, 05:18 PM
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Join Date: Mar 2011
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Welcome to the forum. I don't know what you're asking. The EGR system is inoperative on yours. This results in higher combustion temperatures and excess oxygen both of which contribute to the formation of NOx gases. Fix the EGR system and your NOx emission should come down.
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Old 12-06-2011, 05:18 PM
 
 
 
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1984, 1994, chev, chevy, emission, emissions, emmisions, fail, failed, failure, hc, hevy, idle, s10, truck


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