Isuzu 1999 RODEO Workshop Manual page 1093

6A–8 ENGINE MECHANICAL (6VD1 3.2L)
Hesitation
Condition
Hesitation on acceleration
Hesitation at high speeds
(Fuel pressure too low)
Hesitation at high speeds
(Fuel injector not working normally)
Possible cause
Throttle Position Sensor adjustment
incorrect
Throttle Position Sensor circuit open
or shorted
Excessive play in accelerator linkage
Mass Airflow Sensor circuit open or
poor connections
Mass Airflow Sensor defective
Manifold Absolute Pressure (MAP)
Sensor circuit open or shorted
MAP Sensor defective
Intake Air Temperature (IAT) Sensor
circuit open or poor connections
Knock Sensor (KS) circuit open or
poor connections
KS defective
KS Module circuits open or shorted
KS Module defective
IAT Sensor defective
Fuel tank strainer clogged
Fuel pipe clogged
Fuel filter clogged
Defective fuel pump system
Fuel Pressure Control Valve leaking
Power supply or ground circuit for
Multiport Fuel Injection System
shorted or open
Fuel Injector defective
Cable of Multiport Fuel Injection
System circuit open
connections
Correction
Replace throttle valve assembly
Correct or replace
Adjust or replace
Correct or replace
Replace
Correct or replace
Replace
Correct or replace
Correct or replace
Replace
Correct or replace
Replace
Replace
Clean or replace
Clean or replace
Replace
Check and replace
Replace
Check and correct or replace
Replace
Correct or replace
or poor