In the old CCC system (pre ODB-II) GM code 42 is EST (Electronic Spark Timing) fault. The HEI module in the distributor could be bad, or there could be a wiring or computer problem. When setting timing on these older cars, you disconnect the four wire connector to the distributor. Did you hook it back up? Is the code active or stored? Try resseting the computer.
rocks hit balencer from road
Code 42 on an Oldsmobile Cutlass Ciera means you have a faulty ignition control module. You should inspect all electrical connectors to ensure they are tight.
Air Bag code " 42 " - Left Hand Radiator Primary Crash Sensor Feed / Return Circuit Open
42 - Left hand radiator primary crash sensor feed / return circuit open
that would be the throttle sensor.
1993 Grand Am 3.3L V6 (6-204) - Solved intermittent "Code 42 - electronic spark timing" issue by replacing Mass Air Flow sensor, after checking all wires in harness (and replacing some) between the ECM and ICM, checking all connections, and replacing all the other sensors. All work prior to replacing MAF sensor improved performance but did NOT solve intermittent Code 42 problem. Never got a "MAF sensor" Code 34.
There is a problem in the Electronic Spark Timing System. 1993 3.3L V6 (6-204) - Solved intermittent "Code 42 - electronic spark timing" issue by replacing Mass Air Flow sensor, after checking all wires in harness (and replacing some) between the ECM and ICM, checking all connections, and replacing all the other sensors. All work prior to replacing MAF sensor improved performance but did NOT solve intermittent Code 42 problem. Never got a "MAF sensor" Code 34.
LH Primary Sensor feed/return circuit open.
probably 42 or 36
1993 Grand Am 3.3L V6 (6-204) - Solved intermittent "Code 42 - electronic spark timing" issue by replacing Mass Air Flow sensor, after checking all wires in harness (and replacing some) between the ECM and ICM, check all connections, and replacing all the other sensors. All work prior to replacing MAF improved performance but did solve intermittent Code 42 problem. Never got a MAF sensor Code 34.
I do not fully understand your question, but for your code 42 you must look at this http://floridafieros.org/osg/code42.html for code 45, just try replacing the O2 sensor
Left hand radiator primary crash sensor feed / return circuit open