|86-88 3.8L VIN 3
||Oxygen sensor voltage stays between 0.35 and 0.55 volts for 30 seconds
when the TPS signal was above 0.55 volts. The engine had been running
for at least 40 seconds with an engine temperature above 110° F.
||Coolant temperature sensor signal indicates a temperature of over
284° F for 4 seconds after the engine had been running for at least
||Coolant temperature sensor signal indicates a temperature colder than
-36° F for at least 4 seconds after the engine had been running for
||Charging system voltage was either below 9 volts or above 16 volts
for 10 seconds.
||TPS voltage was above 0.8 volts for 5 seconds when engine was running
and air flow was less than 15 gm/sec, or the TPS voltage was over 4.8
volts at any time.
||TPS voltage was under 0.1 volts for 4 seconds when the ignition was
||Vehicle speed sensor signal showed less than 3 MPH for 40 seconds
when vehicle was in 4th gear.
||4th gear switch was closed or grounded when vehicle was in 4th gear,
or 4th gear switch was open when engine was first started.
||EGR valve did not change when the command was given during off-idle
||MAP signal was too high (low vacuum) when engine was at normal operating
||There was no MAF signal for over 4 seconds while engine was running.
||MAT sensor was shorted showing a high temperature of around 300° F.
||The Torque Converter Clutch portion of the brake switch was open and
caused the TCC to be inoperative.
||Power steering switch was open when vehicle speed was 40 MPH or more.
||Cam sensor signal was not received by PCM for the last 2 seconds while
engine was running.
||The EST signal did not change when the ECM applied bypass voltage
to the ignition module.
||Knock sensor signal was either above 3.5 volts or below 1.5 volts
for at least 20 seconds.
||Oxygen sensor voltage was under 0.25 volts for up to 4 1/2 minutes
of closed loop operation.
||Oxygen sensor voltage was over 0.750 volts for 2 minutes in closed
loop operation with a throttle angle between 0.6 and 1.9 volts.
||Momentary loss of power to Body Computer Module (BCM).
||ECM error. Replace ECM.