Check for corrosion on the plugs on the power module and logic module. Typically the corrosion on the power module plugs is green crud, while on the logic module connectors it is whitish with a tinge of green. I've had similar problems on my cars all from corrosion (mostly logic module problems).
The code 12 says power was removed (battery disconnected). Probably when pushing in or wiggling the connectors, power was momentarily lost (a sign of corrosion). The code 34 is not for the speed control circuit on an L-body (Omni/Charger). On those models and prior to 87 on other models, it is the EGR solenoid circuit is open. Means the logic module cannot detect a voltage change when the EGR solenoid is operated. So there is probably a wiring or connection fault there too, though sometimes the solenoid itself does go bad. Oh and for future reference, HEP pickups really should only be purchased at the dealer. Many from auto parts stores have failed when new right out of the box, or go bad within a short time. Barry > Seems like I don't write for months, then I write > a bunch in a few days. > > Took the 1987 SC out for inspections. It passed without > trouble, runs good now that the timing belt is in the right place. > Pulls hard, spun tire in second gear. Felt like it used to. > > So I stop at a local motorcycle place to look up some part > numbers, come back out to the car and it won't start. It cranks, > but no fire. It has done this before, especially on hot summer days. > > I get the service manager to run me up to Advance Auto Parts > and I get a new ignition pickup (Hall Effect) and install that. > NO CHANGE, still won't start. I thought that my Hall Effect > was going bad from other peoples suggestions. Last time it did > this, it would restart after sitting for 15 minutes. No luck this > time. My parents live about 30 minutes away so I call them and > my mother says she will come pick me up. When she arrives, the > car still won't start. Figuring I have nothing to loose, I check the > codes. Here's the list. > > 22 : Coolant Temp Sensor ( I expected that because I tried to > start it unhooked hoping to fire in the closed loop setting) > 27 : Fuel Injector Control Circuit or injector circuit not > responding (That's new to me) > 34 : Speed Control Vacuum ( don't have speed control ) > 43 : Ignition Control circuit or spark interface circuit (Another new > one to me ) > 54 : Problem with the distributor synchronization circuit > ( related to 43 ? ) > > So I unplug connectors, the one near the baro sensor (5 wires ?) > had oilly crud in it, so I wiggled it around, the plug on the power > module pushed in a hair and the rest that I could get to easily > looked good. > Got in, turned the key, fired right up. THIS MAKES NO > SENSE !!!! > So I drive home, running very well again. Pull in the driveway > and let it sit running. At one point when the radiator fan kicked > in, I thought it was going to stall. It stumbled, recovered and kept > running. I shut it off, waiting 10 minutes, tried to restart it. > It fired up. I checked the codes again and got, > 12 : Memory standby power lost > 34 : see above > > All the other codes were gone. > > I really need some help here folks. I don't want to drive it to > Carlisle like this. > > Thanks > > Donnie > 1987 Shelby Charger > Greensburg, PA -----------------------REMOVE-FOOTER-WHEN-REPLYING---------------------------- Questions? Visit http://www.sdml.org/ To be removed, visit http://www.sdml.org/pages/leave.html
