TRBL
SHTG
Troubleshooting
9-13
6C13G11
Symptom 2: Engine speed at wide open throttle is low, engine speed decreases, or engine
stalls (poor acceleration or poor deceleration).
Yes
Repair or replace the defective
parts.
No
Yes
Repair or replace the defective
parts.
No
Check the throttle valve for
bends and check if the throttle
valve shaft is stuck.
Check the battery lead connec-
tions and check that the ground
lead bolt is not loose or that it
has not come off.
Good condition?
Good condition?
Check the throttle position sen-
sor and idle speed control and
check that the connectors are
securely connected.
Continued on next page.
No
Repair or replace the defective
parts.
Yes
Air leakage?
Check the intake manifold for
air leakage.
Yes
No
Replace the throttle body.
Good condition?
Check the compression pres-
sure.
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