Question about 1992 Oldsmobile Bravada
Hey, your right about code 42 being the Electronic Spark Timing. The Electric Spark Timing Bypass curcuit or EST circuit is either grounded or open. A malfunctioning HEI module can cause this code so I suggest maybe trying to replace the HEI module. Good luck!
Posted on Feb 06, 2009
One our two problems may cause this first there may be a ing modugle problem cheaper of the two problems our it may a ecm issuse. i would try the modugle first
Posted on Dec 29, 2008
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Posted on Jan 02, 2017
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