Lack of Power

***UPDATED BY TSB # 91-11-011, DATED JULY 1991.

Engine delivers less than expected power. Little or no increase in speed on slight acceleration.

NOTE: If initial ignition timing is suspect, a loose timing belt crankshaft pulley may be causing a loss of power or erratic idle. For more information refer to TSB# 91-11-011, DATED JULY 1991

POSSIBLE CAUSE ACTION


Hot air tube not connected Check inlet air temperature system (TAC)
to air cleaner - air damper in "Testing Procedures" in Emissions
door binding or not opening



EGR malfunction Check EGR system in "Testing
Procedures" in Emissions



Spark timing - excessive retard Check Spark Controls in
"Fuel Injection and Computerized
Engine Controls"



Initial timing incorrect Check Ignition Timing in "Adjustment
Procedures" in Emissions



Restricted exhaust Check Catalytic Converter in
"Testing Procedures" in Emissions



Poor or contaminated fuel Recommend higher grade fuel