Originally Posted by 1931 steve
Is this thing blowing black smoke out the tail pipe? How much coolant went into the exhaust system? The oxygen sensor has more than likely failed due to coolant contamination, I would start by replacing the oxy sensor. Also check your vacuum going to the MAP (manifold Air Pressure) sensor. Try running it with this sensor unplugged. Are you sure it is a code # 34 that is flashing on the dash?
These are prone to MAP problems, as well as wiring gremlins. This might help...
Originally Posted by ALLDATA
Circuit K6 splices to supply 5 volts to the throttle position sensor.
Circuit K4 splices to supply ground for the signals from the following:
Heated oxygen sensor
Distributor Pick-up coil
Throttle position sensor
Manifold absolute pressure sensor
Engine coolant temperature sensor
Throttle body temperature sensor
I got the MAP diagnostic charts off ALLDATA, and uploaded them. HTH