Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota 4Runner 1996-2003 Approved SIL techinfo.toyota.com ileaf 02toyrm 02toypdf 02rmsour 2002 024runne em5vzfe cohc insp
<< Back | HomeMost service manuals and schematics are PDF files, so You will need Adobre Acrobat Reader to view : Acrobat Download Some of the files are DjVu format. Readers and resources available here : DjVu Resources
For the compressed files, most common are zip and rar. Please, extract files with Your favorite compression software ( WinZip, WinRAR ... ) before viewing. If a document has multiple parts, You should download all, before extracting.
Good luck. Repair on Your own risk. Make sure You know what You are doing.
Image preview - the first page of the document
>> Download insp documenatation <<
Text preview - extract from the document
EM-1
ENGINE MECHANICAL (5VZ-FE) - CO/HC
CO/HC EM01C-05
INSPECTION
HINT:
This check is used only to determine whether or not the idle CO/
HC complies with regulations.
1. INITIAL CONDITIONS
(a) Engine at normal operating temperature
(b) Air cleaner installed
(c) All pipes and hoses of air induction system connected
(d) All accessories switched OFF
(e) All vacuum lines properly connected
(f) SFI system wiring connectors fully plugged
(g) Ignition timing checked correctly
(h) Transmission in neutral position
(i) Tachometer and CO/HC meter calibrated by hand
2. START ENGINE
3. RACE ENGINE AT 2,500 RPM FOR APPROX. 180 SE-
CONDS
4. INSERT CO/HC METER TESTING PROBE AT LEAST
40 cm (1.3 ft) INTO TAILPIPE DURING IDLING
CO/HC Meter 5. IMMEDIATELY CHECK CO/HC CONCENTRATION AT
IDLE AND/OR 2,500 RPM
HINT:
When doing the 2 mode (2,500 rpm and idle) test, follow the
measurement order prescribed by the applicable local regula-
tions.
S01415
2002 4RUNNER (RM887U)
Author : Date : 813
EM-2
ENGINE MECHANICAL (5VZ-FE) - CO/HC
6. TROUBLESHOOTING
If the CO/HC concentration does not comply with regulations,
troubleshoot in the order given below.
(1) Check oxygen sensor operation (See page
DI-48 ).
(2) Check A/F sensor operation (See page DI-122 ).
(3) See the table below for possible causes, then in-
spect and correct the applicable causes if neces-
sary.
CO HC Symptom Causes
Normal High Rough idle 3. Faulty ignitions:
S Incorrect timing
S Fouled, shorted or improperly gapped plugs
S Open or crossed high-tension cords
4. Incorrect valve clearance
5. Leaky intake and exhaust valves
6. Leaky cylinder
Low High Rough idle 1. Vacuum leaks:
(Fluctuating HC reading) S PCV hose
S EGR valve
S Intake manifold
S Throttle body
S IAC Valve
S Brake booster line
2. Lean mixture causing misfire
High High Rough idle 1. Clogged air filter
(Black smoke from exhaust) 2. Plugged PCV valve
3. Faulty SFI system
S Faulty fuel pressure regulator
S Clogged fuel return line
S Defective ECT sensor
S Faulty ECM
S Faulty injectors
S Faulty throttle position sensor
S Faulty MAF meter
2002 4RUNNER (RM887U)
Author : Date : 814
◦ Jabse Service Manual Search 2026 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo