Engine - Hot Start Difficulties
88vw12GROUP
25
NUMBER
88-04
September 7, 1988
MODEL(S):
Cabriolet, Scirocco, Jetta, 1985-1987 m.y
SUBJECT:
Hot start difficulties
(Radiator cooling fan after-run installation kit)
On vehicles experiencing hot starting difficulties, install radiator cooling fan after-run kit Part No. 191 998 215
- remove battery cover and battery ground strap
- remove rubber plug from upper rear engine panel near brake booster area
- enlarge hole to 20 mm (.78 in.) diameter to accept wiring harness grommet
- remove close-out panel from under left side of instrument panel
- remove fuse/relay panel from bracket
- install relay adapter from after-run kit on position 14 of fuse/relay panel (see Wiring Diagram for reference)
- install after-run control unit in relay adapter
- disconnect yellow multi-point connector from back of fuse/relay panel
- remove 12 gauge Red wire from cavity 7 and connect to round terminal housing in after-run wiring harness
- connect 12 gauge Red wire of after-run wiring harness to cavity 7 of yellow multipoint connector
- reconnect yellow multi-point connector to fuse/relay panel
- connect 20 gauge Black wire of after-run kit to vacant terminal G on fuse/relay panel
- connect ground wire near fuse/relay panel
- route 20 gauge Brown wire and 16 gauge Red/White wire through hole in firewall into engine compartment
- reinstall fuse/relay panel and left close-out panel
FIG. 1:
FIG. 2:
In engine compartment, - disconnect and set aside idle stabilizer and cruise control vacuum servo
- remove connector from radiator cooling fan thermoswitch and pull back rubber boot
- remove Red/White wire from radiator cooling fan thermoswitch connector and cut off terminal end
- remove terminal from Red/White wire in after-run harness
- route Red/White wire through connector boot and crimp to Red/White wire of thermoswitch wiring
- install terminal into radiator cooling fan thermoswitch connector
- pull rubber boot over connector
- install connector on thermoswitch
- mount after-run thermoswitch in bracket (Fig. 1)
- mount temperature switch and bracket with 6.0 mm bolt in available threaded hole on cylinder head between cylinders one and two (Fig. 2) (arrow)
FIG. 3:
FIG. 4:
- attach plastic angle 4 to air duct from after-run kit (Fig. 3)
- fasten hose 1 with wire hook 3 to cam cover
Note
Air flow from air duct must be directed to fuel injectors.
- attach remaining wire hook to radiator fan mounting bolt on fan shroud (Fig. 4)
- adjust wire hook and insert air duct
- attach battery ground strap
- install battery cover