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Home >> Lincoln >> 1989 >> Mark VII LSC >> Repair and Diagnosis >> Engine Performance >> System >> 5.0L CEC Tests W/Codes >> Quick Test >> Symptom/Test Menu

Symptom/Test Menu

DIAGNOSIS BY SYMPTOM (SYMPTOM-TO-CIRCUIT TEST MENU)

Symptom Go To: Circuit Test No. (Step No.)
Runs Rough/Misses/Stalls/Lacks Power/Rough Idle/Surges In Self-Test (1) D19  (2)
Stalls At Idle Or During Self-Test D19  (1)
Stalls When Parking N/A
A/C Stays On During WOT D7  (11)
A/C Not Functioning D7  (11)
Low Idle With A/C On B13  (10)
High Idle In "Drive" A/T Trans Only N/A
Shift Indicator Light Always/Never On (MA SEFI only) D6  (1)
"CHECK ENGINE" Light Always On D11  (1)
"CHECK ENGINE" Light Never On D11  (2)
"CHECK ENGINE"/"CHECK DCL" Message On N/A
"CHECK ENGINE" Message On N/A
"CHECK ENGINE" Light On Intermittently D11  (5)
"CHECK ENGINE" Light Flashes With Erratic Idle D11  (6)
Lack Of Power At WOT N/A
Tachometer Inoperative N/A
Stumble After Hot Restart C1  (19)
Fuel Pump Runs With Engine Off (SEFI only) C2  (14)
Gasoline Fumes In Engine Compartment D4  (1)
Detonation/Spark Knock N/A
Poor Performance, Low Or High Supercharger Pressure N/A
Engine Cooling Fan Inoperative (Single Speed Fan) N/A
Engine Cooling Fan Inoperative (Dual Speed Fan) N/A
Cooling Fan Always On N/A
(1) Ensure MAF sensor is operating correctly.