After driving for approx 15km (hot weather) my 92 park avenue will stall while travelling or while approaching a stop light. Service engine light flashes prior but not always. Engine turns over but will not restart. I have to wait 1 hour to restart. Process will repeat itself eveytime. Exact same after short trip and turn off the engine. No start for 1 hour. I have jumpered the A-B port on the diagnostic connector to use the service engine light diagnostics. Errors come up 17 and 56 by counting the service light flashes. Removed the 3 coil pack and cleaned the mounting and heat sink under the electronic module. Cleaned gnd connections. Cleaned/reseated the connector. (Is this the ECM?) So far advice has been ECM or cam shaft sensor or tap test electronic module under the passenger dash. Have not changed anything yet. Best guess for what has to be changed to save my sanity and wallet?
Monday, August 6th, 2007 AT 8:40 AM