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01-07-2006, 08:17 PM
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#1 |
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Registered Member
Join Date: Oct 2005
Location: Sabana Grande, Puerto Rico
Posts: 33
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Re: O2 sensor help...
You would have to check the signals at the ECM connector, if it's a different reading......time to do some wire tracing. Suggest you do a codes scan to get more information. If the .5-.6 vdc (rich condition for the ECM) are not being read, the system will continue to "add fuel" to the mixture, as you already suspect. LUK
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ACRONYMS: LUK=Let Us Know, GL=Good Luck, LMK=Let Me Know, JIC=Just In Case, BTSTDTRT=Been There Seen That Done That Repaired That and the classic... DILLIGAS=Do I Look Like I Give A S*** 1986 Mustang GT w/T-Tops  NOW: 5.0L Stock SB, X303 Cam, 700 cfm DP Holley, 289 '66 Heads, 1.7 RR, Richmond Gear 4+1 Tranny, Centerforce DF, 2.73 Gears WIP: 3.90 Gears, LS Overhaul, Adj. LCA's & UCA's (Granatelli), T-Top weather striping and rear braces bodywork 
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01-07-2006, 08:49 PM
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#2 |
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Registered Member
Join Date: Feb 2002
Location: Jacksonville, FL
Posts: 706
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Re: O2 sensor help...
Joel,
tx for the reply. Do you have a link to the pcm harness schematic? I am trying to find one now online and in my references... found it, looks like pin 49 ego ground 43 ego l 29 ego r I'll be looking for a 5.5vdc-ish signal at the computer. tx
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1988 GT Convertible 331 10:1 TW heads, GT-40 intake, MSD, TRW flattops, B Cam w/ 1.7's, MAC exhaust, 24's, 70 TB, 76 MAF, 3.73's, Pro 5.0, Koni's, Anderson PMS, Wideband 02, yatta, yatta... One week with new motor, two speeding tickets...joy Last edited by Hozer 88GTConv; 01-07-2006 at 09:17 PM.. |
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01-07-2006, 09:28 PM
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#3 | |
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Registered Member
Join Date: Oct 2005
Location: Sabana Grande, Puerto Rico
Posts: 33
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Re: O2 sensor help...
Quote:
__________________
ACRONYMS: LUK=Let Us Know, GL=Good Luck, LMK=Let Me Know, JIC=Just In Case, BTSTDTRT=Been There Seen That Done That Repaired That and the classic... DILLIGAS=Do I Look Like I Give A S*** 1986 Mustang GT w/T-Tops NOW: 5.0L Stock SB, X303 Cam, 700 cfm DP Holley, 289 '66 Heads, 1.7 RR, Richmond Gear 4+1 Tranny, Centerforce DF, 2.73 Gears WIP: 3.90 Gears, LS Overhaul, Adj. LCA's & UCA's (Granatelli), T-Top weather striping and rear braces bodywork
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01-07-2006, 09:54 PM
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#4 |
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Registered Member
Join Date: Feb 2002
Location: Jacksonville, FL
Posts: 706
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Re: O2 sensor help...
don't have an analog meter, so looks like I'll have to fix the check engine light or find a analog meter...
damn, always something...
__________________
1988 GT Convertible 331 10:1 TW heads, GT-40 intake, MSD, TRW flattops, B Cam w/ 1.7's, MAC exhaust, 24's, 70 TB, 76 MAF, 3.73's, Pro 5.0, Koni's, Anderson PMS, Wideband 02, yatta, yatta... One week with new motor, two speeding tickets...joy |
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01-07-2006, 10:20 PM
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#5 |
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Registered Member
Join Date: Oct 2005
Location: Sabana Grande, Puerto Rico
Posts: 33
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Re: O2 sensor help...
You don't have to fix your CEL....use a 12v test light or LED. Check the next diagram on how to set it up.
 GL
__________________
ACRONYMS: LUK=Let Us Know, GL=Good Luck, LMK=Let Me Know, JIC=Just In Case, BTSTDTRT=Been There Seen That Done That Repaired That and the classic... DILLIGAS=Do I Look Like I Give A S*** 1986 Mustang GT w/T-Tops NOW: 5.0L Stock SB, X303 Cam, 700 cfm DP Holley, 289 '66 Heads, 1.7 RR, Richmond Gear 4+1 Tranny, Centerforce DF, 2.73 Gears WIP: 3.90 Gears, LS Overhaul, Adj. LCA's & UCA's (Granatelli), T-Top weather striping and rear braces bodywork
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