TROUBLESHOOTING GUIDE — 17. ENGINE STALLS AT IDLE — AFTER WARM-UP
F-45flowchartSection 16 Continued — Troubleshooting Guide (Steps 5-7)
1
Check if air cleaner element is clean (page F-75)
No
Replace air cleaner element (page F-92)
Yes
2
Go to next step
3
Disconnect ISC valve connector when engine is cold and note idle speed. Check if engine speed decreases after warm-up
No
Check air valve (page F-99)
Yes
4
Go to next step
5
Try known good ECU and check if condition improves (page F-127)
No
Change fuel to another brand
Yes
6
Replace ECU (page F-127)
17. ENGINE STALLS AT IDLE — AFTER WARM-UP
Description
DESCRIPTION
ItemsEngine runs normally at idle during warm-up but becomes rough and stalls after warm-up
NOTE
[TROUBLESHOOTING HINTS]
1) Air/Fuel mixture too lean
- Air leakage of intake air system
2) Low intake air amount
- Idle speed control malfunction
Section 17 — Troubleshooting Guide (Steps 1-3)
1
Check if air is leaked from intake air system component (page F-93)
Yes
Repair or replace (page F-93)
No
2
Go to next step
3
Disconnect ISC valve connector at idle and check if 'clicking' is heard from ISC valve
No
Replace ISC valve (page F-99)
Yes
4
Go to next step
5
Go to troubleshooting No.10 'LOW IDLE SPEED/ROUGH IDLE-AFTER WARM-UP' (page F-34)