Engine Stalls On Deceleration - Kia Sorento 2001 General Information Manual

Do injecors leak?
13 Replace ECM and check for roper operation.
15
· Engine stops unexpectedly during or after deceleration
Description
· Idling condition is normal
(Troubleshooting hint)
Engine speed decreases abruptly when accelerator pedal is released, which can cause connectors to come loose.
1. Malfunction of idle air control
2. Malfunction of throttle position sensor system
3. Malfunction of fuel cut control
Step
Check that malfunction indicator light is
illuminated while ignition switch is ON.
1
Is MIL illuminated longer than 3 seconds after
ignition switch turned ON?
Check throttle position sensor, IAC valve
2 terminal voltage and related wiring harness.
Are sensors OK?
Check ECM terminal voltages for B01-2,
3 B01-29, B01-59, B01-73 and B01-73.
Are voltages within specification?
Check contact condition of the following
connectors :
- Throttle position sensor, mass air flow
4
sensor, ignition coils, injector, crankshaft
position sensor, fuel pump relay, ECM.
Are terminal connections OK?
5 Replace ECM and check for proper operation.
16
· Engine stops suddenly and intermittently
Description
· Engine is normal until engine stops
(Troubleshooting hint)
1. Malfunction of IAC control system
2. Malfunction of throttle position sensor system
3. Intermittently loosened contact of electrical wiring harness
Step
Check that malfunction indicator light is
illuminated while ignition swithc is ON.
1
Is MIL illuminated longer than 3 seconds after
is turned ON?
Check contact condition of the following
connectors :
- Throttle position sensor, mass air flow
2
sensor, ignition coils, injector, crankshaft
position sensor, fuel pump relay ECM.
Are connections OK?
Measure crankshaft position sensor and mass
3

Engine stalls on deceleration

Check
Engine stalls suddenly (Intermittent), sudden engine stop
Check
No Go to next step.
Malfunction indicator light is illuminated.
Yes Check for causes. Refer to Troubleshooting
with Diagnostic Trouble Codes, page21-18.
No Go to next step.
Yes Go to next step.
Repair the wiring harness or replace defective
No
component.
Yes Go to next step.
No Check for cause and repair as necessary.
Yes Go to next step.
No Repair or replace.
Malfunction indicator light is illuminated.
Yes Check for causes. Refer to troubleshooting
with diagnostic trouble codes, page21-18.
No Go to next step.
Yes Go to next step.
No Repair or replace as necessary.
Yes Go to next step.
Remedy
Remedy