Celica Coupe L4-132 2164cc 2.2L DOHC (5S-FE) (1992)
Throttle Positioner (TP): Adjustments
1.
Warm up engine.
2.
Check idle speed.
3.
Remove cap, filter and separator from the dash pot (DP).
4.
Check DP setting speed.
a.
Maintain engine speed at 3,000 rpm.
b.
Plug the vacuum transmitting valve (VTV) hole with your finger.
Checking The Dashpot (DP) Setting Speed
c.
Release the throttle valve.
d.
Check the DP setting speed.
DP Setting Speed:
(M/T)
1,800 rpm
(A/T)
2,200 rpm
Note:
Checks and adjustments are made with the cooling fan OFF.
Fig. 202a Dash Pot Adjustment
5.
If not as specified, adjust with the DP adjusting screw. Fig. 202a
6.
Check operation of the VTV.
a.
Set the DP speed in the same procedure as above.
b.
Release the plugged hole and check that the engine returns to idle in a few second. If not as specified, check for a sticking plunger.
Replace DP if a problem is found.
7.
Reinstall DP separator, filter and cap.