Thread: Emmisions Help
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Old 07-17-06, 07:53 PM   #11 (permalink)
Snowryder
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Join Date: Oct 2002
Location: Chicago, IL
Posts: 148


Car 1: 1990 Legend LS Coupe 80k miles



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Alright so here is the new results.


Test 3 (Cat Replaced)

.99 Hydrocarbon

.80 is the standard


46.4 Carbon Monoxide
15.0 is the standard


and here is the second test to compare it too.


Test 2 (O2 sensor replaced)

2.20 Hydrocarbon
.80 is the standard


81 Carbon Monoxide
15 is the standard


So the CO was cut in half after the cat was put in and the HC dropped ~1.3 which is almost passing now.


I think i'm going to put a multimeter to the front O2 sensor to make sure it has a solid reading and if so i think ill replace the sparkplugs and wires.

What you guys think? Any suggestions?
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1990 LS Legend Coupe,
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