T
TR3MGTD
Guest
1986 code 34 problem
my engine started runing roughly the check engine light came on and code 34 showed up .Per the flow chart it seemed to run (a little) better with the MAF disconected so I replaced the MAF with a rebuilt unit from SIA Electronics via ZIP Corvette catalog. Still bad and 34 code. I then replaced the ECM with a rebuilt ECM from same co..Still bad with 34 code. I then took I to CHEV. dealer who promised a diag. and fix with their scanner. They claimed both the rebuilt MAF and ECM bad (seems unlikely). They replaced the ECM with a rebuilt Chev. ECM. but I still get 34 code.And very rough starting,idle). The SIA co. tested both their rebuilt ECM and MAF and say both are good. I replaced the MAF again with another rebuilt one and still runs rough and 34code. (per flo chart disconnecting the MAF does make code 33 which is said to mean the MAF is bad and the ECM and wiring is OK). HELP! , any ideas? what should I do next? (the local Chev. dealer doesn't inspire me with confidence )
my engine started runing roughly the check engine light came on and code 34 showed up .Per the flow chart it seemed to run (a little) better with the MAF disconected so I replaced the MAF with a rebuilt unit from SIA Electronics via ZIP Corvette catalog. Still bad and 34 code. I then replaced the ECM with a rebuilt ECM from same co..Still bad with 34 code. I then took I to CHEV. dealer who promised a diag. and fix with their scanner. They claimed both the rebuilt MAF and ECM bad (seems unlikely). They replaced the ECM with a rebuilt Chev. ECM. but I still get 34 code.And very rough starting,idle). The SIA co. tested both their rebuilt ECM and MAF and say both are good. I replaced the MAF again with another rebuilt one and still runs rough and 34code. (per flo chart disconnecting the MAF does make code 33 which is said to mean the MAF is bad and the ECM and wiring is OK). HELP! , any ideas? what should I do next? (the local Chev. dealer doesn't inspire me with confidence )