|
|
EMISSION CONTROL TSB Revision ENGINE AND EMISSION CONTROL 17-99 3. Stop the engine. Remove the Tee-fitting and the hand vacuum pump. 4. Connect the hand vacuum pump directly to the EGR valve. 5. Start the engine and run at idle until warm. 6. The engine idling speed should be rough when a vacuum of 29 kPa (8.7 in Hg) or more is applied to the EGR valve. 7. If engine idles rough, EGR passage is open and the system is OK. If engine idle is not rough, the EGR passage and the VACUUM CONTROL VALVE CHECK M1173002700044 1. Disconnect the vacuum hose (white stripe) from the vacuum control valve and connect the hand vacuum pump to the 2. Plug the end of the removed vacuum hose. 3. Start the engine and run at idle. 4. Check the vacuum condition. EGR VALVE CHECK M1173002800041 1. Remove the EGR valve and inspect for sticking, carbon deposits, etc. If found, clean with a suitable solvent so that 2. Connect a hand vacuum pump to the EGR valve. 3. Apply 67 kPa (20 in Hg) of vacuum, and check to be sure that the vacuum is maintained. 4. Apply a vacuum and check the passage of air by blowing through one side of the EGR passage. AKX01318 PLUG EGR VALVE BLACK AB <2.4L ENGINE> AKX01319 AB EGR VALVE BLACK PLUG <3.0L ENGINE> ENGINE CONDITION NORMAL VACUUM Idling Approximately 21.3 − 24.0 kPa (6.3 - 7.1 in Hg) AKX01320 WHITE STRIPE PLUG AB VACUUM PASSAGE OF AIR 5.3 kPa (1.6 in Hg) or less Air is not blown out 29 kPa (8.7 in Hg) or more Air is blown out AKX00348 |