09-26-2006, 02:23 PM
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3" Exhaust
Join Date: Dec 2005
Location: Springfield, Massachusetts
Posts: 87
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Running rich!
went to get my inspection sticker, she is all stock except cold air, anyways I failed, we have a rolling test and my HC's were thru the roof, our limit is 2.0, I did 3.9. anyone have any ideas why she is running so rich??
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89 Turbo, no mods yet 5 speed mbc to 10psi |
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09-27-2006, 02:15 AM
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#2 |
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1000whp postwhore
Join Date: Jun 2005
Location: Mojave Desert, Calif.
Posts: 1,705
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HC is raw, unburned fuel.
what were the CO% #s?? -very high CO% will mean running too rich Possible areas: -very rich mixture (black smoke) -Engine misfires (very likely) -cat converter bad Rolling Test?? you mean dyno??
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Had a Red 1989 N/A. Automatic. Sports Pkg. w/wing. TEMS, and some nice MODS. Sold to a friend 10/08/08. |
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09-27-2006, 03:32 AM
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#3 |
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3" Exhaust
Join Date: Jul 2006
Location: Vancouver, WA.
Posts: 233
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Guessing he means the 25mph test. Car runs under load and they check the exhaust again, like at idle.
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1989 N/A Targa 5spd. Metallic Grey, w/grey interior. No mods done. |
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09-27-2006, 11:41 AM
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#4 |
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3" Exhaust
Join Date: Dec 2005
Location: Springfield, Massachusetts
Posts: 87
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co2's were high as well 30.00 is the limit, I had 23.31. really sucked...
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89 Turbo, no mods yet 5 speed mbc to 10psi |
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09-28-2006, 05:36 AM
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#5 |
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1000whp postwhore
Join Date: Jun 2005
Location: Mojave Desert, Calif.
Posts: 1,705
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I'd get those CO% #s down for a starter. O2 sensor, AFM, other things.
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Had a Red 1989 N/A. Automatic. Sports Pkg. w/wing. TEMS, and some nice MODS. Sold to a friend 10/08/08. |
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09-28-2006, 11:36 AM
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#6 |
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3" Exhaust
Join Date: Dec 2005
Location: Springfield, Massachusetts
Posts: 87
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I put the new o2 sensor in and can feel the change already, but i reset the ecu and now when I am over 2000RPMS and push in the clutch, she stalls. And I hear a fluttering from the BOV, thats normal right since it is stock?? also my idle is finnally staying where it should be, before the new o2 it would be around 800 or more.
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89 Turbo, no mods yet 5 speed mbc to 10psi Last edited by grygst76; 09-28-2006 at 03:16 PM. |
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09-29-2006, 01:56 AM
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#7 |
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1000whp postwhore
Join Date: Jun 2005
Location: Mojave Desert, Calif.
Posts: 1,705
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When you reset the ECU, it may take a day or 2, and a few drive cycles for it to 're-learn', and then run correctly.
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Had a Red 1989 N/A. Automatic. Sports Pkg. w/wing. TEMS, and some nice MODS. Sold to a friend 10/08/08. |
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