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#1
12-27-2005, 12:19 AM
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Intermittent no start problem
I have a 93 4 cyl EFI Toyota pick up. Sometimes the damn thing just won't start. I sprayed some WD 40 into the intake and it attempts to fire. There is this strange clicking noise coming from the air cleaner/ mass air flow sensor when it won't start.
I first suspected the fuel pump but it isn't a constant problem Then I changed the fuel filter and the problem was still there. Any ideas? 
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#2
12-27-2005, 03:00 AM
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Re: Intermittent no start problem
First, find out if you have gas at the injectors and spark at the plugs.
Check the ECM and see if there are any codes.
__________________
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#3
01-20-2006, 07:18 PM
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Re: Intermittent no start problem
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. 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 245 000 KM http://www.iwaynet.net/~nesda/May02/May18.html http://www.iwaynet.net/~nesda/SonyAudMod.html http://www.newark.com/product-detail...ge/32-9495.jpg http://www.iwaynet.net/~nesda/June03/June0315.html http://www.iwaynet.net/~nesda/Apr03/Apr033.html
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