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#1 Old 09-11-2007, 07:21 PM
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need help clearing trouble codes

bought 91 22re fuel ing.it was idleing fast and rough. pulled trouble codes, 31,41,22,24. i have replaced or checked all of these and the codes will not go away. removed batt cable after each one. also cannot get pcv valve out. have pulled very hard with pliers. hope someone cha help thanks
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#2 Old 09-11-2007, 08:36 PM
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hello there John. Saw your post and my question is this. How did you 'get' the codes? Do you buy a code reader or what? I'm new to this, but have owned a 1991 and a 1994 since almost new. 22RE trucks, both getting on in miles, (140K)A year after a exhaust and converter removal, the 91 triggers the check eng. light, with no obvious reasons. Any help wouldd be appreciated, as I am looking to learn more about the computer, eng management, and better performance. Thanks where in AL do you live?I live in Daphne.
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#3 Old 09-12-2007, 08:02 AM
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to get the codes ,ues a short jumper wire or paper clip and jump fromterminals te1 to e1 on the dlc1. its on the right side , under hood next to fuse panel. lift the small cover and inside the lid it will show where the te1 and the e1 is. turn ignition key on but do not start. the engine lite on the instrument will flash. if it flashes two times , slight pause snd flashes one time that would be trouble code 21. it will then flash the next code after a longer pause. these codes numbers ca be found in the chilton repair manuel. they can also be found on this toyota site bu looking for trouble codes. i live in piedmont and this is my first experience with a efi engine. hope this helps some.
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#4 Old 09-12-2007, 06:25 PM
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Usually taking off the negative battery cabel will reset the codes. It shouldn't trip right away after starting the car up.

PCV usually coems right out. But I have heard of problems before. Probably due to being in there too long so it gets stuck. Just try again with more force. It will either come out or break in the process. But you have a new one so it shouldn't matter. Just make sure you don't drop anything when it breaks.
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#5 Old 09-12-2007, 07:59 PM
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can you just pull the ecm fuse to reset the codes? i really dont wanna have to reset my radio settings from pulling the battery cable.

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#6 Old 09-13-2007, 12:34 AM
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thanks very much for the help! Will try the steps and hope for good results. Great thanks again!
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#7 Old 09-13-2007, 01:55 AM
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Be careful when removing the PCV valve, the rubber grommet usually hardens and will break off and fall into the head when pulling out the PCV. I did mine at the same time as the valve cover gasket. If you think its sticking, spray some PCV cleaner or carb cleaner (before you change the oil) for now.

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#8 Old 09-24-2007, 09:58 PM
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Quote:
Originally Posted by lastlaprich
hello there John. Saw your post and my question is this. How did you 'get' the codes? Do you buy a code reader or what? I'm new to this, but have owned a 1991 and a 1994 since almost new. 22RE trucks, both getting on in miles, (140K)A year after a exhaust and converter removal, the 91 triggers the check eng. light, with no obvious reasons. Any help wouldd be appreciated, as I am looking to learn more about the computer, eng management, and better performance. Thanks where in AL do you live?I live in Daphne.
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://www.autoshop101.com/forms/h27.pdf
http://www.showmesome.info/hilux/inf...E/Page0096.htm
http://www.efisakh.narod.ru/at_toyota.htm (auto tranny codes)
http://www.usatransdoctor.com/foreigntoyota.htm
http://www.obd-codes.com/forums/viewforum.php?f=3

Pulling the ECU (EFI computer) 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 at each ECU wire 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 the resistance values 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.

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