Actron 9640A manual Cylinder Cyl Balance Test EEC-IV Vehicles, Remaining=156

Ford Historic Self-Test Routines

5)Turn Ign Key Off.

6)Wait 10 Seconds. Turn Key On-Engine Off. Do not Start Engine.

!CAUTION

Avoid Cooling Fan! It May Turn On During Test.

The test screen indicates the time remaining. Do not touch vehicle or tool keys during this time until the next screen appears.

Depress the accelerator pedal fully to turn ON relays and solenoids. Do the same to turn them OFF. This can be repeated as many times as required to locate the fault.

Turn the ignition key Off and press to turn to the Fo d Function List.

Cylinder (Cyl) Balance Test (EEC-IV Vehicles)

• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 6 – 9

✓ TheCylBalanceTest is only applicable to

ngin quipped wi

EEC-IV

Sequential Electronic Fuel Injection (SE

I or SFI) .

TheCylBalanceTest identifies a weak cylind

r(s) on EEC-IV v

hic

. A weak

cylinder may be caused by low compression, poor valve seat

, f

uled

park

plugs, damaged fuel injectors, and other cylind r faults. he PCM

huts off the

fuel supply to each cylinder and measures t

RPM d op The PCM th n cal-

culates variations between cylinders thus id

ntif ing the weak

es.

Remaining=1:56

Solenoids

ocedureThrottle

! WARNING

Exhaust gases are harmful

ly

thal. Always op rate vehi- 6

cle in a well-ventilated areaFuReAreTPimehan3Miute.lays*Off*ToturnOn&.RunsDeprss&.Less.[~]

! CAUTION

The Cyl Balance Test is done with the eng

run

. Do

not over-rev engine. Obse ve all safety p ecautio .

Select Cyl BalanceTest from the Ford

Function List and press

.

Keep hands and tools away from fan nd engine during

! CAUTION

test.

FUNC

FordFuncionLithat6OutputSwprompt the user to:Test]

Follow the instructions on the tool screen

1)

Set Parking Brake.

`87DCLDa)CylBalancet

Test~[

2)

Put Transmission In Park Or Neutral.

3)

Turn A/C Off.

4)

Start Engine — Let Idle Until Hot.

5)

Turn Ign Key Off.

6)

Wait 10 Seconds. Start Engine — Let Idle.

7)

If Vehicle Has A ManualENTERTrans., Release Clutch.