1996 - 2000 Rav4 EGR Diagnosis, Engine Testing, Bench Testing, EGR Valve, Vacuum Modulator, VSV скачать в хорошем качестве

1996 - 2000 Rav4 EGR Diagnosis, Engine Testing, Bench Testing, EGR Valve, Vacuum Modulator, VSV

This video shows the layout, parts, and function of the EGR, or Exhaust Gas Recirculation, system on the '96 - '00 Rav4. The EGR Valve, EGR Vacuum Modulator, and VSV (Vacuum Switching Valve) are shown, testing, and explained. Check the Pinned Comment or the Timestamps below to skip around (links for the EGR Valve and VSV replacement videos are below the Timestamps): EGR Components Detailed Explanation: 00:01:10 What is EGR (Exhaust Gas Recirculation) 00:01:50 Path of Exhaust Gas from Exhaust Manifold to Intake 00:02:27 EGR Valve location and begin explanation 00:02:28 EGR Pipe location 00:03:08 EGR Valve in hand 00:04:15 EGR pintle when under vacuum 00:06:17 Connection between EGR Valve and Vacuum Modulator 00:06:35 The two "sides" of the EGR circuit (vacuum side and exhaust side) 00:07:13 VSV, Vacuum Switching Valve explanation 00:08:59 VSV with shorter hoses for demonstration 00:11:18 VSV under vacuum, not energized 00:12:37 VSV hooked up to 12v battery for demonstration 00:15:41 Vacuum Modulator explanation 00:16:52 Vacuum Modulator in hand 00:17:43 How to remove Vacuum Modulator 00:18:10 Opening the top of the Vacuum Modulator 00:19:18 Explanation of Q, R, and P ports of Vacuum Modulator 00:22:37 Vacuum sources at Throttle Body 00:23:40 Holes for Ports E and R 00:27:59 Role of ECU (engine computer) in EGR circuit 00:28:49 Role of MAP (Manifold Absolute Pressure) sensor in EGR Circuit Begin Engine Tests: 00:30:44 Begin In-Engine Tests 00:30:51 Check all vacuum hoses for leaks 00:32:18 Check for vacuum at Throttle Body 00:35:04 Test 1: Check EGR Valve directly to see if it opens 00:39:50 Test 2: Check VSV function with Key OFF and Key ON conditions 00:46:10 Test 3: Check Vacuum Modulator for flow 00:47:59 Test 4: Check Vacuum Modulator for diaphragm response to backpressure 00:50:09 Prepare hose tees and gauges for next tests 00:51:36 Test 5: Check vacuum at Q port 00:59:17 Test 6: Check vacuum at EGR valve with engine cold Warm up engine before Test 7: 01:01:10 Test 7: Check vacuum at EGR valve with engine warm 01:04:14 Test 8: Check vacuum at Q with full manifold vacuum on P Bench Tests: 01:11:20 Bench test EGR Valve 01:13:27 Bench test Vacuum Modulator 01:19:42 Bench test VSV Mini EGR Circuit: 01:25:47 Mini EGR Circuit with no vacuum at R port and some backpressure 01:29:30 Mini EGR Circuit with vacuum at R port and no backpressure Link for the EGR Valve replacement video:    • 1996 - 2000 Toyota Rav4 DIY Remove Throttl...   Link for the VSV Video:    • 1996 - 2000 Toyota Rav4 EGR VSV, Vacuum Sw...   Thanks for watching! Please leave any tips, comments, or question in the Comments section. Thanks for 1,200 Subscribers! I hope this video was helpful for you. Good luck with your repair!