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#1
11-20-2005, 03:48 PM
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94 Check Read Check Engine Light
94 with 151k flawless miles. Check Engine light comes one. Still runs great. But AutoZone could not find out what type and where the port is to get to codes from my 4runner. Can anyone help?
Or is this thing so old, you cannot use the new tools to get the codes? Thanks 
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#2
11-20-2005, 10:33 PM
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To pull the ECU codes:
All 1980-1995 and including 1995 EFI equipped vehicle allow you to find engine and related faults by pulling the ECU (computer) codes without the need for a handheld OBDII diagnosis scanner,the sites listed below have the fault codes needed to pull the codes and the instructions on how to do it: http://autorepair.about.com/library/...bl-dtcs-36.htm http://autorepair.about.com/library/...bl-dtcs-53.htm http://autorepair.about.com/library/...bl-dtcs-71.htm http://autorepair.about.com/library/...bl-dtcs-90.htm http://www.off-road.com/toyota/tech/codes/index.html http://lcengineering.com/TechNotes/TechNote12.htm http://lcengineering.com/TechNotes/TechNote13.htm http://www.geocities.com/MotorCity/P...ct/Engine.html http://www.mad-mechanic.com/toyota/t...tml#obtaincode http://www.freewebs.com/th3duke/22RE-ECU.mht http://www.troublecodes.net/Toyota/ http://members.igateway.net/~pscott/enginecodes.html http://www.autobook.co.kr/data_links...uble_codes.htm http://www.autoshop101.com/forms/h27.pdf http://www.showmesome.info/hilux/inf...E/Page0096.htm http://www.efisakh.narod.ru/at_toyota.htm http://www.usatransdoctor.com/foreigntoyota.htm Pulling the ECU codes is the first thing I do to diagnosis a problem thereafter I reset the ECU to see if the same problems show up and if so I then take voltage measurements both with the engine running and not and compare with the factory service manual,I also close the ignition switch after a cold engine and also after a warm engine and compare them with the factory service manual.This technique will completely isolate your problem without having to do trial and error and it is the technique I use when repairing tv's,vcr's,home/car audio. Any Public Library in your area would have the Factory service manual,Haynes,Chiltons,Mitchells,Clymers,Bentley and Toyota repair books. There is also free AutoZone service manuals at: http://www1.autozone.com/servlet/UiB...pair_guide.jsp For scanned pages of factory service manuals for other engines: http://www.brian894x4.com/Scannedmanual.html http://home.swiftdsl.com.au/~scorp/surf/1KZ-TE.pdf http://www.showmesome.info/hilux/info/manuals/1KZ-TE http://surf.mactherapy.com/1KZ-TE.pdf http://surf.mactherapy.com/parts/ http://www.spyderchat.com/1zzfe.pdf http://files.matrixvibe.net/docs/1zzfe.pdf http://landcruiser.free.fr/mans/ http://surf.mactherapy.com http://www.turbosupras.com/pages/technical/tsrm.htm http://www.lieblweb.com/tacoma/Mecha...rams/index.htm http://perso.wanadoo.fr/adherence.4x...techniques.htm http://perso.wanadoo.fr/adherence.4x4/index.htm http://www.asatraction4x4.cl/html/ http://www.toyotasurf.asn.au/techsite/downloads.htm http://www.grubinski.com/grubinski/a...oyota.manuals/ http://www.carsoft.ru/files/4runner95di.exe http://www.hotrodder.com/kwkride/tech.html http://www.autoshop101.com/autoshop15.html http://www.mtv411.com/sitemap.htm 1985 Toyota 4-Runner/pickup Factory Service manual: http://www.jasuza.com/1985toyotatruckfsm.pdf 1993 Toyota Pickup Service Manual: http://personal.utulsa.edu/~nathan-buchanan/93fsm/ 2003 (2001-2004) Toyota Tacoma Factory Service Manual: http://fsm.afraid.org/ http://www.junglecode.com/toyota/tacoma/2003_fsm/ http://65.200.1.6/FSM/ FSM (factory service manual)can be acquired in several ways: Toyota Material Distribution Center 750 West Victoria St Rancho Dominguez/Compton,CA 90220-5538 USA Ph:1-800-622-2033 (outside CA)(M-F: 7-5 PST) Ph:1-800-443-7656 (inside CA) Ph:1-310-818-4630 (in or outside CA) Speak to Beverly or Deloris http://techinfo.toyota.com/public/main/mdc.html http://www.4crawler.com/4x4/FSM.shtml 1)buy a used one off e-bay 2)some Toyota dealerships may give you one or sell it for $10-20 (used) as most Toyota dealerships don't repair many old Toyotas and no longer need the service manual 3)some public libraries sell their old books as they are not in demand any longer 4)some free buy & sell classified papers,websites and bulletin boards may have some used ones for sale 5)some junk yards may have one laying around 6)some Toyota specialty garages may have one laying around and no longer use it as the vehicle may be too old and those mechanics probably have so much experience that they could publish their own factory service manual with corrections and "real world repair tips" 7)if someone has the FSM maybe they could scan all of the pages and post it on a site for all of us to download or view. Sidney® ™ Repairs tv's,vcr's,home/car audio out of my home E-mail:[email protected] Dartmouth,Nova Scotia Canada 1985 Toyota 4-Runner,solid front straight axle,factory cruise control,sunroof,22R-E,W56,RN60LV-MSEK,rusted rear step/towing chrome bumper with 246 000 KM O |\ __O _|_| \ http://www.iwaynet.net/~nesda/May02/May18.html http://www.iwaynet.net/~nesda/SonyAudMod.html http://www.iwaynet.net/~nesda/Oct02/Oct028.html http://www.iwaynet.net/~nesda/Oct02/Oct029.html http://www.iwaynet.net/~nesda/Oct04/Oct041.html
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#3
11-20-2005, 11:14 PM
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Re: 94 Check Read Check Engine Light
Quote:
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#4
11-22-2005, 11:33 PM
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Be very careful what you measure as even the small voltage from a meter will destroy the O2 sensor!
It will most likely be returning a code 25 "Air Fuel Ratio Lean Malfunction" but this can also be caused by any number of vacuum leaks. Here is how to do it: http://personal.utulsa.edu/~nathan-b...85diagnosi.pdf Sticky post at the top of this form for the 93 FSM : http://www.automotiveforums.com/vbul...d.php?t=408565
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