16
TPS JUMPER INSTALLATION
FIGURE 5
TESTING THE POWER RELAY:
The power relay used with the
PRO-JECTION
2D
Fuel Injection System is a normally open type of relay. When Power is applied
across the relay’s coil (terminals 85 and 86) the magnetic field generated closes the contacts between terminals 30 and 87.
1. Unplug all wires from the relay and remove the relay from your vehicle.
2. With a digital volt/ohm meter, check the continuity between terminals 85 and 86 on the relay. If there is no continuity between
these two terminals, the relay must be replaced.
3. With a digital volt/ohm meter, ensure that there is no continuity between terminals 30 and 87 on the relay. If continuity exists
between these two terminals with no power applied to the relay’s coil, the relay must be replaced.
4. Connect terminal 86 to ground.
5. Connect terminal 85 to a positive (+) 12 Volt power source.
6. With a digital volt/ohm meter, check for continuity between terminals 30 and 87 when power is applied. If there is no continuity
between terminals 30 and 87 with power applied to the relay’s coil, the relay must be replaced.
TESTING THE FAST IDLE SOLENOID:
1. Remove the yellow wire from the tab located at the base of the fast idle solenoid.
2. Attach a temporary jumper wire to the positive (+) terminal on your battery.
3. Attach the other end of the temporary jumper wire to the tab located at the base of the fast idle solenoid.
4. If the plunger at the top of the fast idle solenoid does not extend with power applied to the fast idle solenoid, the solenoid must be
replaced.
1997® Registered Trademarks of Holley Performance Products
199R-9975
