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05-02-2011, 11:42 PM
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#1 |
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walbro fp
Join Date: Dec 2010
Location: spokane
Posts: 479
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if the o2 sensor is not close enough to the collector or too far down stream, it will not get hot enough and your car will not run properly.
an option would be to get a heated o2 sensor. then it gets to operating temp quicker. but ive also had them falsify readings when placed too far down the exhaust. the car ran fine, but poor mileage ensued.
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87 toyota 4x4 single cab short box pickup, 7MGZE. |
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05-03-2011, 01:14 AM
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#2 |
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Stock
Join Date: Apr 2011
Location: Seminole, Florida
Posts: 22
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yeah true, but the car isnt running an 02 sensor at all which i think is my problem, it looks like he cut the wire on the wiring harness or i just cant find it, im prob going to try to but the oem headers and down pipe and just do custom pipe after the down pipe
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05-03-2011, 03:06 AM
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#3 |
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walbro fp
Join Date: Dec 2010
Location: spokane
Posts: 479
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id say thats definitely your problem.
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87 toyota 4x4 single cab short box pickup, 7MGZE. |
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05-03-2011, 03:11 AM
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#4 |
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Stock
Join Date: Apr 2011
Location: Seminole, Florida
Posts: 22
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yeah it just sucks cause now i dont know where the damn connection is ive looked on numerous occasions
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05-03-2011, 05:33 AM
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#5 |
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walbro fp
Join Date: Dec 2010
Location: spokane
Posts: 479
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i believe theres a pinout on the TSRM, find what color the wire is on there and trace it from the ecu itself. it should come out the end of the harness after it loops all the way around the drivers side. i believe it clipped to the firewall originally. it may have been clipped off at the end so check around where the harness crosses over the cam gear housing.
if you find it, you can keep your header and drill a new hole where the collectors merge, then have a bung welded on for a decent price (or a buddy with a welder), then put a heated o2 sensor in. problem solved and you get to keep your header.
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87 toyota 4x4 single cab short box pickup, 7MGZE. |
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05-03-2011, 11:27 AM
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#6 |
 Toyota Racing Development Join Date: Apr 2007
Posts: 5,038
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The O2 sensor connector exits the harness right by the oil pressure and temp sensor wiring.
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05-04-2011, 12:03 PM
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#7 |
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Supra Forum Moderator
Join Date: Nov 2009
Location: Green-Ohio
Posts: 1,297
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keep running 93 octane in your car all the time. you will have to replace that shiny new 02 sensor after awhile. but hell don't take my word for it =) do it and find out.
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