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#1 |
87 Wanna Be K30
Join Date: May 2003
Location: long island, new york
Posts: 218
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O2 sensor???maybe?possibly???
I put full length headers on my 87 and now it has no power. The truck barely moves when its cold and when its warmed up it bogs out really bad. I cant really drive like this. My 0-60 time is about 10 minutes. is it possible that i put the o2 sensor too far away when i welded the new fitting in? its on the exhaust, about 6in before the collector. i heard it needs to be with in a foot of the head. should i move it to a header tube?
thanks guys -Scott
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Was: 1987 V10 Silverado TBI 350/700R4/208 with 3.42 gears Is: A wanna be K30 330hp 350/465/205/D60/14FF with 3.73 hydroboost, 4 Core radiator, electric fans, Centerforce Duel Friction, Locker, 6inch Soft ride lift, etc.... Last edited by bbchevy; 02-26-2007 at 08:58 PM. |
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#2 | |
Registered User
Join Date: Jul 2001
Location: North Louisiana
Posts: 4,501
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Re: O2 sensor???maybe?possibly???
Quote:
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Wynne 70 CST short fleet Hugger orange & white, 350/350, ps, pb, air, tilt, tach/vac/speedwarning, original buckets, AM/FM, oak bed floor, shoulder belts, 3.5"/5.5" drop, 20" American Racing VN425s. Build thread 53 Chevy shortbed 69 Camaro Click here to subscribe Chevy GMC International Truck Club Louisiana Charter Member http://www.louisianaclassictruckclub.com |
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#3 |
87 Wanna Be K30
Join Date: May 2003
Location: long island, new york
Posts: 218
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Re: O2 sensor???maybe?possibly???
Yea i heard the o2 has to be a certain temp to function properly. and making it that far away messes with it. that and the fact that it 30 degrees here so the exhaust doesnt get that warm in the first place, right now. i think im going to move it to a header tube.... but i really dont wanna move it
__________________
Was: 1987 V10 Silverado TBI 350/700R4/208 with 3.42 gears Is: A wanna be K30 330hp 350/465/205/D60/14FF with 3.73 hydroboost, 4 Core radiator, electric fans, Centerforce Duel Friction, Locker, 6inch Soft ride lift, etc.... |
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#4 |
Registered User
![]() Join Date: Apr 2005
Location: Ar
Posts: 558
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Re: O2 sensor???maybe?possibly???
I just installed headers on my 85. When I went to purchase reducers at the local speed shop some that they had in stock had the bung for the O2 sensor. I take it thats where it needs to go is in the reducer or maybe the collector itself. What type of headers did you install?
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#5 |
Right turn Clyde
Join Date: Nov 2002
Location: Cincinnati, Ohio
Posts: 2,911
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Re: O2 sensor???maybe?possibly???
If it is a heat issue I would get a heated O2 sensor (three wire).
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1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73 1992 Camaro RS 305 TBI |
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#6 | |||
Registered User
Join Date: May 2004
Location: Minnesota
Posts: 4,621
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Re: O2 sensor???maybe?possibly???
Quote:
Anything else you can think of that you changed at the same time you put the headers on? How stock is everything else? Quote:
Quote:
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#7 |
Registered User
Join Date: Jul 2001
Location: North Louisiana
Posts: 4,501
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Re: O2 sensor???maybe?possibly???
How should it be wired?
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Wynne 70 CST short fleet Hugger orange & white, 350/350, ps, pb, air, tilt, tach/vac/speedwarning, original buckets, AM/FM, oak bed floor, shoulder belts, 3.5"/5.5" drop, 20" American Racing VN425s. Build thread 53 Chevy shortbed 69 Camaro Click here to subscribe Chevy GMC International Truck Club Louisiana Charter Member http://www.louisianaclassictruckclub.com |
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#8 |
Registered User
Join Date: May 2004
Location: Minnesota
Posts: 4,621
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Re: O2 sensor???maybe?possibly???
Kits for retrofitting should come with instructions.
For the Three wire sensors: One wire will connect to the same wire as the Old O2 sensor did. Another will connect to power when the truck is running. The remaining wire connects to ground. Make sure you connect the correct wires to the correct places. I would think there are other board members that have good information on this. Maybe even instructions, which came with theirs, they can post. These sites show how 4 wire O2 sensors are wired on newer vehicles from the factory. http://shbox.com/1/HO2S_connector.jpg http://autorepair.about.com/library/...bl786a-lib.htm |
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#9 | |
Registered User
Join Date: Jul 2001
Location: North Louisiana
Posts: 4,501
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Re: O2 sensor???maybe?possibly???
Quote:
__________________
Wynne 70 CST short fleet Hugger orange & white, 350/350, ps, pb, air, tilt, tach/vac/speedwarning, original buckets, AM/FM, oak bed floor, shoulder belts, 3.5"/5.5" drop, 20" American Racing VN425s. Build thread 53 Chevy shortbed 69 Camaro Click here to subscribe Chevy GMC International Truck Club Louisiana Charter Member http://www.louisianaclassictruckclub.com |
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