About half of the ECU codes stored on the first & second generation EFI Toyotas don't show a constant blinking check engine light therefore you must pull the ECU codes to see if a fault is registered.
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
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.
The oxygen sensor is replaced for free in the USA only when the vehicle reaches it's first 80 000 miles regardless of the age & number of owners as stated in the factory owner's manual in the maintenance section,some Toyota dealerships are reluctant to replace it for free if that happens contact the Toyota regional head office for your region where they will give your local dealership 48 hours to comply.
On average the oxygen sensors should be replaced every 6 years or 100 000 miles or so which ever comes first as stated in the owner's manual,warranty booklet and factory service manual.
Symptoms of a bad o2 sensor are poor gas mileage,hesistation in acceleration,worse emmissions,and in severe cases after the stat opens the engine can no longer maintain stable 750 rpm (with manual 5 spd tranny) idle and the engine begins to stall.
The 02 sensor is designed to function once the vehicle has warmed up which is about after 10 minutes where the thermostat begins to open at 190 or 195 degrees Ferenheit depending on thermostat then the vehicles ECU system enters what they call a "closed loop system" then the exhaust manifold's temperature reaches 400 degree Ferenheit (I think)that's where the sensor starts to do it's job which is usually when the thermostat first opens up then the oxygen sensor senses the ratio of air to fuel and sends a signal back to the ECU then ECU compensates by increasing or decrease the open time for the fuel injectors to pump fuel.So usually the problem of stalling shows up after about 10 minutes of driving or so.many folks think that the o2 sensor is bad but an exhaust leak can cause excess oxygen to enter the exhaust system thereby fooling the sensor into thinking there is too much oxygen,there are other problems that could cause it to give false reading such as a vaccuum leak.
If you discover that the o2 sensor is bad and it is not under warranty then from my/others experience/research purchase an o2 sensor in the following order:
1)Toyota (NipponDenso now called Denso)
2)Denso aftermarket (Same as original but sold aftermarket)
3)NTK (oxygen sensor division of NGK)
Available at:
http://www.1sttoyotaparts.com/partscat.html (10% shipping by Fed Ex or free shipping with $100 & over speak to Roger at 1-888-271-3948
http://www.Toyotaparts4U.com
http://www.toyotaofplano.com
http://www.densoaftermarket.com
http://www.ngksparkplugs.com
Sidney® ™
Repairs tv's,vcr's,home/car audio out of my home
E-mail:sidneybek@yahoo.com
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 245 000 KM
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http://www.iwaynet.net/~nesda/Oct02/Oct028.html
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