TROUBLE DIAGNOSIS — GENERAL DESCRIPTION; Symptom Matrix Chart (Cont'd) — System: Engine Mechanical & Other
EF & EC-7058spec tableSource table uses rowspan-merged cells in the AB column for several Fuel/Air rows (single '5' spanning multiple rows); values transcribed verbatim to the first applicable row where the printed digit visually anchors, with cleared cells for adjacent rowspan members.
Symptom Matrix Chart (Cont'd)
CG10, CGA3
SYSTEM — ENGINE MECHANICAL & OTHER
Symptom Matrix Chart — Engine Mechanical & Other
Fuel
ItemFuel tank
AA — HARD/NO START/RESTART (EXCP. HA)5
AB — ENGINE STALL5
AC — HESITATION/SURGING/FLAT SPOT
AD — SPARK KNOCK/DETONATION
AE — LACK OF POWER/POOR ACCELERATION
AF — HIGH IDLE/LOW IDLE
AG — ROUGH IDLE/HUNTING
AH — IDLING VIBRATION
AJ — SLOW/NO RETURN TO IDLE
AK — OVERHEATS/WATER TEMPERATURE HIGH
AL — EXCESSIVE FUEL CONSUMPTION
AM — EXCESSIVE OIL CONSUMPTION
HA — BATTERY DEAD (UNDER CHARGE)
Reference pageFE section
Fuel
ItemFuel piping
AA — HARD/NO START/RESTART (EXCP. HA)
AB — ENGINE STALL
AC — HESITATION/SURGING/FLAT SPOT5
AD — SPARK KNOCK/DETONATION5
AE — LACK OF POWER/POOR ACCELERATION5
AF — HIGH IDLE/LOW IDLE
AG — ROUGH IDLE/HUNTING5
AH — IDLING VIBRATION5
AJ — SLOW/NO RETURN TO IDLE
AK — OVERHEATS/WATER TEMPERATURE HIGH
AL — EXCESSIVE FUEL CONSUMPTION5
AM — EXCESSIVE OIL CONSUMPTION
HA — BATTERY DEAD (UNDER CHARGE)
Reference pageFE section
Fuel
ItemVapor lock
AA — HARD/NO START/RESTART (EXCP. HA)
AB — ENGINE STALL5
AC — HESITATION/SURGING/FLAT SPOT
AD — SPARK KNOCK/DETONATION
AE — LACK OF POWER/POOR ACCELERATION
AF — HIGH IDLE/LOW IDLE
AG — ROUGH IDLE/HUNTING
AH — IDLING VIBRATION
AJ — SLOW/NO RETURN TO IDLE
AK — OVERHEATS/WATER TEMPERATURE HIGH
AL — EXCESSIVE FUEL CONSUMPTION
AM — EXCESSIVE OIL CONSUMPTION
HA — BATTERY DEAD (UNDER CHARGE)
Reference pageFE section
Fuel
ItemValve deposit
AA — HARD/NO START/RESTART (EXCP. HA)
AB — ENGINE STALL
AC — HESITATION/SURGING/FLAT SPOT
AD — SPARK KNOCK/DETONATION
AE — LACK OF POWER/POOR ACCELERATION
AF — HIGH IDLE/LOW IDLE
AG — ROUGH IDLE/HUNTING
AH — IDLING VIBRATION
AJ — SLOW/NO RETURN TO IDLE
AK — OVERHEATS/WATER TEMPERATURE HIGH
AL — EXCESSIVE FUEL CONSUMPTION
AM — EXCESSIVE OIL CONSUMPTION
HA — BATTERY DEAD (UNDER CHARGE)
Reference pageFE section
Fuel
ItemPoor fuel (Heavy weight gasoline, Low octane)
AA — HARD/NO START/RESTART (EXCP. HA)5
AB — ENGINE STALL
AC — HESITATION/SURGING/FLAT SPOT5
AD — SPARK KNOCK/DETONATION5
AE — LACK OF POWER/POOR ACCELERATION5
AF — HIGH IDLE/LOW IDLE
AG — ROUGH IDLE/HUNTING5
AH — IDLING VIBRATION5
AJ — SLOW/NO RETURN TO IDLE
AK — OVERHEATS/WATER TEMPERATURE HIGH
AL — EXCESSIVE FUEL CONSUMPTION5
AM — EXCESSIVE OIL CONSUMPTION
HA — BATTERY DEAD (UNDER CHARGE)
Reference pageFE section
Air
ItemAir duct
AA — HARD/NO START/RESTART (EXCP. HA)
AB — ENGINE STALL
AC — HESITATION/SURGING/FLAT SPOT
AD — SPARK KNOCK/DETONATION
AE — LACK OF POWER/POOR ACCELERATION
AF — HIGH IDLE/LOW IDLE
AG — ROUGH IDLE/HUNTING
AH — IDLING VIBRATION
AJ — SLOW/NO RETURN TO IDLE
AK — OVERHEATS/WATER TEMPERATURE HIGH
AL — EXCESSIVE FUEL CONSUMPTION
AM — EXCESSIVE OIL CONSUMPTION
HA — BATTERY DEAD (UNDER CHARGE)
Reference pageFE section
Air
ItemAir cleaner
AA — HARD/NO START/RESTART (EXCP. HA)
AB — ENGINE STALL5
AC — HESITATION/SURGING/FLAT SPOT
AD — SPARK KNOCK/DETONATION
AE — LACK OF POWER/POOR ACCELERATION
AF — HIGH IDLE/LOW IDLE
AG — ROUGH IDLE/HUNTING
AH — IDLING VIBRATION
AJ — SLOW/NO RETURN TO IDLE
AK — OVERHEATS/WATER TEMPERATURE HIGH
AL — EXCESSIVE FUEL CONSUMPTION
AM — EXCESSIVE OIL CONSUMPTION
HA — BATTERY DEAD (UNDER CHARGE)
Reference pageFE section
Air
ItemAir leakage from air duct (Mass air flow sensor — throttle body)
AA — HARD/NO START/RESTART (EXCP. HA)
AB — ENGINE STALL
AC — HESITATION/SURGING/FLAT SPOT5
AD — SPARK KNOCK/DETONATION5
AE — LACK OF POWER/POOR ACCELERATION5
AF — HIGH IDLE/LOW IDLE
AG — ROUGH IDLE/HUNTING5
AH — IDLING VIBRATION5
AJ — SLOW/NO RETURN TO IDLE
AK — OVERHEATS/WATER TEMPERATURE HIGH
AL — EXCESSIVE FUEL CONSUMPTION5
AM — EXCESSIVE OIL CONSUMPTION
HA — BATTERY DEAD (UNDER CHARGE)
Reference pageFE section
Air
ItemThrottle body, Throttle wire
AA — HARD/NO START/RESTART (EXCP. HA)5
AB — ENGINE STALL
AC — HESITATION/SURGING/FLAT SPOT
AD — SPARK KNOCK/DETONATION
AE — LACK OF POWER/POOR ACCELERATION5
AF — HIGH IDLE/LOW IDLE5
AG — ROUGH IDLE/HUNTING
AH — IDLING VIBRATION
AJ — SLOW/NO RETURN TO IDLE5
AK — OVERHEATS/WATER TEMPERATURE HIGH
AL — EXCESSIVE FUEL CONSUMPTION
AM — EXCESSIVE OIL CONSUMPTION
HA — BATTERY DEAD (UNDER CHARGE)
Reference pageFE section
Air
ItemAir leakage from intake manifold/Collector/Gasket
AA — HARD/NO START/RESTART (EXCP. HA)
AB — ENGINE STALL
AC — HESITATION/SURGING/FLAT SPOT
AD — SPARK KNOCK/DETONATION
AE — LACK OF POWER/POOR ACCELERATION
AF — HIGH IDLE/LOW IDLE
AG — ROUGH IDLE/HUNTING
AH — IDLING VIBRATION
AJ — SLOW/NO RETURN TO IDLE
AK — OVERHEATS/WATER TEMPERATURE HIGH
AL — EXCESSIVE FUEL CONSUMPTION
AM — EXCESSIVE OIL CONSUMPTION
HA — BATTERY DEAD (UNDER CHARGE)
Reference pageFE section
Cranking
ItemBattery
AA — HARD/NO START/RESTART (EXCP. HA)1
AB — ENGINE STALL1
AC — HESITATION/SURGING/FLAT SPOT1
AD — SPARK KNOCK/DETONATION
AE — LACK OF POWER/POOR ACCELERATION1
AF — HIGH IDLE/LOW IDLE
AG — ROUGH IDLE/HUNTING1
AH — IDLING VIBRATION1
AJ — SLOW/NO RETURN TO IDLE
AK — OVERHEATS/WATER TEMPERATURE HIGH
AL — EXCESSIVE FUEL CONSUMPTION
AM — EXCESSIVE OIL CONSUMPTION
HA — BATTERY DEAD (UNDER CHARGE)1
Reference pageEL section
Cranking
ItemAlternator circuit
AA — HARD/NO START/RESTART (EXCP. HA)
AB — ENGINE STALL
AC — HESITATION/SURGING/FLAT SPOT
AD — SPARK KNOCK/DETONATION
AE — LACK OF POWER/POOR ACCELERATION
AF — HIGH IDLE/LOW IDLE
AG — ROUGH IDLE/HUNTING
AH — IDLING VIBRATION
AJ — SLOW/NO RETURN TO IDLE
AK — OVERHEATS/WATER TEMPERATURE HIGH1
AL — EXCESSIVE FUEL CONSUMPTION
AM — EXCESSIVE OIL CONSUMPTION
HA — BATTERY DEAD (UNDER CHARGE)
Reference pageEL section
Cranking
ItemStarter circuit
AA — HARD/NO START/RESTART (EXCP. HA)3
AB — ENGINE STALL
AC — HESITATION/SURGING/FLAT SPOT
AD — SPARK KNOCK/DETONATION
AE — LACK OF POWER/POOR ACCELERATION
AF — HIGH IDLE/LOW IDLE
AG — ROUGH IDLE/HUNTING
AH — IDLING VIBRATION
AJ — SLOW/NO RETURN TO IDLE
AK — OVERHEATS/WATER TEMPERATURE HIGH
AL — EXCESSIVE FUEL CONSUMPTION
AM — EXCESSIVE OIL CONSUMPTION
HA — BATTERY DEAD (UNDER CHARGE)
Reference pageEL section
Cranking
ItemFlywheel
AA — HARD/NO START/RESTART (EXCP. HA)6
AB — ENGINE STALL
AC — HESITATION/SURGING/FLAT SPOT
AD — SPARK KNOCK/DETONATION
AE — LACK OF POWER/POOR ACCELERATION
AF — HIGH IDLE/LOW IDLE
AG — ROUGH IDLE/HUNTING
AH — IDLING VIBRATION
AJ — SLOW/NO RETURN TO IDLE
AK — OVERHEATS/WATER TEMPERATURE HIGH
AL — EXCESSIVE FUEL CONSUMPTION
AM — EXCESSIVE OIL CONSUMPTION
HA — BATTERY DEAD (UNDER CHARGE)
Reference pageEM section
NOTE
1 - 6: The numbers refer to the order of inspection.
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