check engine TOYOTA CELICA 1987 Service Repair Manual

u EM3271
. .
1.
Do not stop the engine immedialtely after pullin
trailer or high speed or uphill driving. Idle the engin
- 126 seccnds, depending on the severity of the drf
ing condition, .,I
2.
Avoid sudden racing or acceleration immediately
starting a cold engine. aft
3.
If the engine is ‘run with the air cleaner remov
foreign material : entering Will damage the whe
which run’ at ext 4.
lf the turbocharger i‘s .defective and must be replac
first check for thd &use of the defect in referent
the foilowing ite&and replace parts if necessary:
l .Engine:oil level and quality
c ,. ,_. .^
. I, .: .’
c Conditions under which the turbocharger MI
used ..
c Oil lines leading to the turbocharger
PRECAUTIO.NS
5.
use caution when .removing and reinstalling the
bocharger assembly. Do not drop it or bang it
anything or grasp it by easily-deformed parts,
the actuator or rod, .when moving it.
6.
other foreign material.
7.
lf replacing the turbocharger, check for accumulati
of sludge particles in the oil pipes and, if necessary
replace the oil pipes.
8.
EM327:
allow the engine
to idle for 60 seconds.
. ,-

TURBOCHARGER SYSTEM - Troubleshooting TC-5
TROUBLESHdOTlNG
NOTE: Before troubleshooting the turbocharger, first
check the engine itself. (Valve clearance, engine compres-
sion, ignition timing etc.)
INSUFFICIENT ACCELERATION, LACK OF POWEk OR
EXCESSIVE FUEL CONSUMPTION
(Possible Cause)
I
1. TURBOCHARGING PRESSURE TOO
LOW
t
’ (Check Procedure and Correction Method)
Check turbocharging pressure. (See page TC-8)
Turbocharging pressure:
M/T 0.39 - 0.53 kg/cm2
(5.5 - 7.5 psi, 38 - S2 kPa)
A/T 0.34 - 0.42 kg/cm2
(4.8 - 6.0 psi, 33 - 41 kPa)
If the pressure is below specification, begin
diagnosis from item 2.
2. RESTRICTED INTAKE AIR SYSTEM Check intake air system, and repair or replace
‘1
parts as necessary. (See page TC-7)
J
.
3. LEAK IN INTAKE AIR Check intake air system, and repair or replace
parts as necessary. (See page TC-7)
.
4. RESTRICTED EXHAUST SYSTEM Check exhaust system, and repair or replace parts
as necessary. (See page TC-7)
Check exhaust system, and repair or replace parts
as necessary. (See page TC-7)
6. ERRATIC TURBOCHARGER
OPERATION Check rotation of impeller wheel. If it does not turn
or turns with a heavy drag, replace the turbocharger
assembly.
Check axial play of bearing shaft. (See page TC- 14)
Axial play: 0.13 mm (0.0051 in.) or less
If not within specification, replace the turbocharger
assembly.

TC;8 TUWOCHARGER SYSTEM--- Turbocharger
-. ‘(g) Disccnnect the actuator hose.
(h) Using, SST (turbocharger pressure gauge), apply
approx. 0.52 kg/cm2 (7.4 psi, 51 kpa) of pressure to
‘the actuator and check that the rod moves.
SST 09992:00241
SST
EM352!
If the rod does not move, replace the turbocharger aasem-
bly.
CAUTION: Never apply more than 0.8 kg/cm2 (11.4.
psi 78 kPa1 of pressure to the actuator.
4.
CHECK TURBOCHARGING PRESSURE
(a) Install SST (turbocharger pressure gauge) to the
pressure regulator with a three way.
SST 09992-00241
(b) (M/T models)
Accelerate the vehicle with the throttle valve fully
open after driving at 3-speed at 1,000 rpm.
Meausure the turbocharging pressure when the
engine speed is over 2,500 rpm.
Standard pressure:
0.39 - 0.53 kg/cm2
(6.8 - 7.8 psi, 38 - 82 kPa)
(c) (A/T models)
From a stationary state accelerate the vehicle in I”
range with the throttle valve fully open. Measure the
turbochargining pressure when the engine speed is
over 3,500 rpm.
Standard p‘ressure: 0.34 - 0.42 kg/em2
(4.8 - 8.0 psi, 33 - 41 kpa)
If the pressure is less than that specified, check the intake
air and exhaust systems for leakage. If there isno leakage,
replace the turbocharger assembly.
If the pressure is above specification, check if the actuator
hose is disconnected or cracked. If not, replace the turl
bocharger assembly.
I l,Il - 1 5, INSPECT IMPELLiR WHEEL ROTATION
/-L
EM32
Grasp the edge of the impeller wheel and turn it.
Check that it turns smoothly.
If it does not turn or if it turns with a drag, replace the tur
bocharger assembly.
1 :74

ms1’8
TURBOCHARGER SYSTElk - Turbokharger
(c) Connect the PS idle up air hose.
(d) Connect the air.flow meter. connector.
(e)
Conn&t.thk PCV hose and three air hoses.
14. INSTALL NO.4 AIR CLEANER PIPE WITH NO.1
AND NO.2 AIR’CLEANER HOSES
15. FILL WITH COOLANT
(See page CO-5)
16. CX;hXi CABLE TO NEGATIVE TERMINAL OF
17. START ENGINE AND CHECK FOR LEAKS