Ford Corsar Repair Manual page 318

TROUBLE DIAGNOSES
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I
AC:TI!.!E TEST
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CAS. HPM<PO!S)
550rPri,
A I R FLlliW PITH 1.24l.,J
Et.IG TEMP
SEt.1 179°F
SEF1621
Diagnostic Procedure 13
-
Engine Stalls
when Stepping on the Accelerator Momentarily
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CHECK A.A.C. VALVE.
1.
Select
"A.A.C. VALVE circuit. (See
page ES-196)
mode.
2. When touching "Qu" and
"Qd", does the engine speed
change according to the per-
cent of A.A.C. valve opening?
OR
When disconnecting throttle sen-
sor harness connector, does the
engine speed drop?
Yes
PERFORM POWER BALANCE TEST.
1. Perform "POWER BALANCE"
in "ACTIVE TEST" mode.
2. Is there any cylinder which
does not produce a momen-
tary engine speed drop?
:t::t::+:t:
POI$EE @ALAt.II::E
:+:r:t::t:
=R
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Ilot.lITfiR ======= When disconnecting each injec-
CA! ; . RPpl
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PCi ! ;
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tor harness connector one at a
time, is there any cylinder which
does not produce a momentary
engine speed drop?
CAUTION:
Be sure to set gears to
"Neutral".
S E F ' 5 7 1 A
CHECKINJECTOR.
1. Remove crank angle sensor from
Check injector(s) and
their circuit(s).
engine. (Harness connector should
remain connected.)
2. Disconnect each ignition wire.
3. Turn ignition switch ON. (Do not start
engine.)
4. When rotating crank angle sensor
shaft, does each injector make an
operating sound?
Yes
(Go to
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