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rfmaster · 10-17-2009, 05:38 PM

Pancake

Congratulations!

Code 42 is very annoying and sometimes difficult to solve. This is a good write up on code 42 troubleshooting.
http://www.asashop.org/autoinc/may97/techtips.htm. Also, code 42 will be set when you disconnect EST to set timing. To clear disconnect bat for about 20 sec to clear codes (but you know this).

Code 44 indicates lean mixture. There are numerous reasons for code 44, but I would check fuel pressure first to make sure that you are not starving - i.e. 13 PSI and higher. Cold O2 sensor is another reason, but you have a heated unit. Vacuum leaks, stuck IAC motor are known to set code 44.

Injectors are known to be noisy - check out my video on YouTube.

//RF

10-17-2009, 05:38 PM	#321
rfmaster Registered User Join Date: Oct 2003 Location: OC CA Posts: 1,374	Re: Tbi swap build thread Pancake Congratulations! Code 42 is very annoying and sometimes difficult to solve. This is a good write up on code 42 troubleshooting. http://www.asashop.org/autoinc/may97/techtips.htm. Also, code 42 will be set when you disconnect EST to set timing. To clear disconnect bat for about 20 sec to clear codes (but you know this). Code 44 indicates lean mixture. There are numerous reasons for code 44, but I would check fuel pressure first to make sure that you are not starving - i.e. 13 PSI and higher. Cold O2 sensor is another reason, but you have a heated unit. Vacuum leaks, stuck IAC motor are known to set code 44. Injectors are known to be noisy - check out my video on YouTube. //RF __________________ "The Beast" 1975 Chevrolet C20 longbed 350/700R4! with 3inch body lift Dual Flowmasters Super 40's! TBI retrofit completed (2007-07-29) New 383CID (+030) 08-304-8 9.5:1CR x36,005 (2012-12-17)