TROUBLESHOOTING GUIDE

F2-18index toc

DIAGNOSTIC INDEX

Diagnostic Index

NO.	TROUBLESHOOTING ITEM	DESCRIPTION	PAGE
1	Will not crank or cranks slowly	Refer to Engine Electrical System	section G
2	Cranks normally but will not start — (No combustion)	Engine cranks at normal speed but shows no sign of firing	F2-21
3	Cranks normally but will not start — (Partial combustion) — When engine cold	Engine cranks at normal speed but shows only partial combustion and will not continue to run	F2-23
4	Cranks normally but will not start — (Partial combustion) — After warm-up	Engine starts normally when cold but will not start after running and being hot soaked	F2-25
5	Cranks normally but hard to start — Always	Engine cranks at normal speed but requires excessive cranking time before starting	F2-27
6	Cranks normally but hard to start — When engine cold	Same condition as No.5 when engine cold; Restarts normally after warm-up	F2-29
7	Cranks normally but hard to start — After warm-up	Same condition as No.5 after running and being hot soaked; Starts normally when cold	F2-31
8	Rough idle / Low idle speed / Engine stalls at idle — Always	Engine stalls or vibrates excessively at idle	F2-33
9	Rough idle / Low idle speed / Engine stalls at idle — Before warm-up	Engine stalls or vibrates excessively at idle during warm-up	F2-35
10	Rough idle / Low idle speed / Engine stalls at idle — After warm-up	Engine runs normally at idle during warm-up but stalls or vibrates excessively after warm-up	F2-37
11	Rough idle / Low idle speed / Engine stalls at idle — When A/C, P/S, or E/L ON	Engine stalls or vibrates excessively at idle when A/C, P/S, or E/L ON	F2-39
12	Rough idle / Engine stalls just after starting	Engine stalls or vibrates excessively just after starting (acceleration from idle)	F2-40
13	High idle speed after warm-up	Idle speed excessively high after warm-up	F2-41
14	Idle moves up and down / idle hunting	Engine speeds up and down at idle	F2-43
15	Engine stalls on deceleration	Engine unexpectedly stops running during or after deceleration	F2-45
16	Engine stalls suddenly (Intermittent)	Engine intermittently stops running	F2-47
17	Hesitates / Stumbles on acceleration	Flat spot occurs just after accelerator is depressed, or mild jerking occurs during acceleration	F2-48
18	Surges while cruising	Unexpected change in engine speed that is usually repetitive	F2-50
19	Lack of power	Engine performance poor under load when throttle valve is fully open; Maximum speed reduced	F2-52
20	Poor acceleration	Engine performance poor during acceleration	F2-56
21	Runs rough during deceleration / Backfire	Engine runs rough during deceleration, and abnormal combustion occurs in exhaust system	F2-60
22	Knocking	Abnormal combustion accompanied by audible "pinging" noise	F2-62
23	Fuel odor	Gasoline odor in cabin	F2-64
24	Exhaust sulfur odor	Exhaust gas has unusual odor	F2-65
25	High oil consumption	Oil consumption excessive	F2-65
26	Poor fuel economy	Fuel economy unsatisfactory	F2-66
27	A/C does not work	Blower fan operates, but magnetic clutch does not	F2-68

TROUBLESHOOTING ITEMWill not crank or cranks slowly

DESCRIPTIONRefer to Engine Electrical System

PAGEsection G

TROUBLESHOOTING ITEMCranks normally but will not start — (No combustion)

DESCRIPTIONEngine cranks at normal speed but shows no sign of firing

PAGEF2-21

TROUBLESHOOTING ITEMCranks normally but will not start — (Partial combustion) — When engine cold

DESCRIPTIONEngine cranks at normal speed but shows only partial combustion and will not continue to run

PAGEF2-23

TROUBLESHOOTING ITEMCranks normally but will not start — (Partial combustion) — After warm-up

DESCRIPTIONEngine starts normally when cold but will not start after running and being hot soaked

PAGEF2-25

TROUBLESHOOTING ITEMCranks normally but hard to start — Always

DESCRIPTIONEngine cranks at normal speed but requires excessive cranking time before starting

PAGEF2-27

TROUBLESHOOTING ITEMCranks normally but hard to start — When engine cold

DESCRIPTIONSame condition as No.5 when engine cold; Restarts normally after warm-up

PAGEF2-29

TROUBLESHOOTING ITEMCranks normally but hard to start — After warm-up

DESCRIPTIONSame condition as No.5 after running and being hot soaked; Starts normally when cold

PAGEF2-31

TROUBLESHOOTING ITEMRough idle / Low idle speed / Engine stalls at idle — Always

DESCRIPTIONEngine stalls or vibrates excessively at idle

PAGEF2-33

TROUBLESHOOTING ITEMRough idle / Low idle speed / Engine stalls at idle — Before warm-up

DESCRIPTIONEngine stalls or vibrates excessively at idle during warm-up

PAGEF2-35

TROUBLESHOOTING ITEMRough idle / Low idle speed / Engine stalls at idle — After warm-up

DESCRIPTIONEngine runs normally at idle during warm-up but stalls or vibrates excessively after warm-up

PAGEF2-37

TROUBLESHOOTING ITEMRough idle / Low idle speed / Engine stalls at idle — When A/C, P/S, or E/L ON

DESCRIPTIONEngine stalls or vibrates excessively at idle when A/C, P/S, or E/L ON

PAGEF2-39

TROUBLESHOOTING ITEMRough idle / Engine stalls just after starting

DESCRIPTIONEngine stalls or vibrates excessively just after starting (acceleration from idle)

PAGEF2-40

TROUBLESHOOTING ITEMHigh idle speed after warm-up

DESCRIPTIONIdle speed excessively high after warm-up

PAGEF2-41

TROUBLESHOOTING ITEMIdle moves up and down / idle hunting

DESCRIPTIONEngine speeds up and down at idle

PAGEF2-43

TROUBLESHOOTING ITEMEngine stalls on deceleration

DESCRIPTIONEngine unexpectedly stops running during or after deceleration

PAGEF2-45

TROUBLESHOOTING ITEMEngine stalls suddenly (Intermittent)

DESCRIPTIONEngine intermittently stops running

PAGEF2-47

TROUBLESHOOTING ITEMHesitates / Stumbles on acceleration

DESCRIPTIONFlat spot occurs just after accelerator is depressed, or mild jerking occurs during acceleration

PAGEF2-48

TROUBLESHOOTING ITEMSurges while cruising

DESCRIPTIONUnexpected change in engine speed that is usually repetitive

PAGEF2-50

TROUBLESHOOTING ITEMLack of power

DESCRIPTIONEngine performance poor under load when throttle valve is fully open; Maximum speed reduced

PAGEF2-52

TROUBLESHOOTING ITEMPoor acceleration

DESCRIPTIONEngine performance poor during acceleration

PAGEF2-56

TROUBLESHOOTING ITEMRuns rough during deceleration / Backfire

DESCRIPTIONEngine runs rough during deceleration, and abnormal combustion occurs in exhaust system

PAGEF2-60

TROUBLESHOOTING ITEMKnocking

DESCRIPTIONAbnormal combustion accompanied by audible "pinging" noise

PAGEF2-62

TROUBLESHOOTING ITEMFuel odor

DESCRIPTIONGasoline odor in cabin

PAGEF2-64

TROUBLESHOOTING ITEMExhaust sulfur odor

DESCRIPTIONExhaust gas has unusual odor

PAGEF2-65

TROUBLESHOOTING ITEMHigh oil consumption

DESCRIPTIONOil consumption excessive

PAGEF2-65

TROUBLESHOOTING ITEMPoor fuel economy

DESCRIPTIONFuel economy unsatisfactory

PAGEF2-66

TROUBLESHOOTING ITEMA/C does not work

DESCRIPTIONBlower fan operates, but magnetic clutch does not

PAGEF2-68

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