Inspection Of Tp System; Check Tp Setting Speed - Volkswagen Taro 1989 Workshop Manual

INSPECTION
OF
TP SYSTEM
1. Warm up engine
2. Check and if neceswy, adjust idling speed
3.
Check of control system for vacuum switching valve
a)
C n w *
Inat the tnronle post!oner does nnt opprate when lhe
engfnc speed s above l9BO rpm and ien cle sprrvl s abore
(b) Check that the thronle positioner operates when the engine
speed is below 1980 rpm and vehtcle speed 1 s above
38 kmih
4. Check TP sening speed
(a)
D~sconnect two vacuum hoses (1) from the vacuum
switching
vaive (2) and connect them drrectiy to the other
connector (3).
(b)
Alter the TP is set, check that engine speed is correct
TP senlng speed
1 200
+
100 rpm
If not at speciffed speed, adjust with the TP adiusting screw
HINT Make adjustment wkh the engine cooilng fan off