Diagnostic Procedure 7 — Hesitation when the Engine is Hot
EF & EC-76flowchartTROUBLE DIAGNOSES
Diagnostic Procedure 7 — Hesitation when the Engine is Hot
1
Check for vapors. Remove fuel pressure regulator vacuum hose. Plug open end of vacuum hose. Conduct test-run. Check to ensure engine no longer hesitates.
O.K.
Check for properties of fuel.
N.G.
2
Check canister condition. Remove purge and vacuum hoses. Plug open end of purge hose. Conduct test-run. Check to ensure engine no longer hesitates.
O.K.
Check purge and vacuum system.
N.G.
3
Check air intake for leaks. Start engine. Check to ensure engine speed increases when blow-by hose is pinched with fingers.
N.G.
Repair areas where air leaks.
O.K.
4
Check throttle sensor. [With CONSULT] Conduct self-diagnosis and "Real Time Diagnosis" with "DATA MONITOR" showing on display. (Refer to "CONSULT".) [Without CONSULT] Conduct self-diagnosis Mode II. (Refer to "Self-Diagnosis".)
N.G.
Check throttle sensor and circuit. Refer to "Throttle Sensor". (See page EF&EC-143).
O.K.
5
Check vehicle speed sensor. Check speedometer operation. Refer to "Vehicle Speed Sensor". (See page EF&EC-146).
N.G.
Repair or replace.
O.K.
6
Check air flow meter. Check for operation. Refer to "Air Flow Meter". (See page EF&EC-134.)
N.G.
same as step 5
O.K.
7
To point A (continued on next page)