TIMING, SYNCHRONIZING & ADJUSTING
90-883728 JULY 2001 Page 2C-5
Throttle Position Sensor
The Throttle Position Sensor (TPS) is not adjustable. The Throttle Position Sensor func-
tion can be monitored by using the DDT. All voltages should be within specifications listed.
Voltage progression from idle to wide open throttle should be smooth. If voltage is out of
specification or progression is erratic, TPS should be replaced.
IGNITION
SYSTEM
Throttle Position Sensor
@ Idle
@ W.O.T.
0.19 – 1.0 vdc
3.45 – 4.63 vdc
Idle Speed
The idle speed is not adjustable. Idle speed is controlled by the ECM by advancing or re-
tarding the ignition timing to maintain an idle rpm of approximately 700 in neutral and 625
in gear.
Throttle Cable Installation
1. With end of throttle cable connected to throttle lever, hold throttle lever (a) against idle
stop (b). Adjust throttle cable barrel to slip into barrel recess of control cable anchor
bracket, with a light preload of throttle lever against idle stop. Lock barrel in place.
IMPORTANT: Excessive preload on throttle cable will cause difficulty when shifting
from “FORWARD” to “NEUTRAL” (readjust throttle cable barrel, if necessary).
57838
b
a
c
d
a-Throttle Lever
b-Idle Stop
c-Cable Barrel – Adjust
To Hold Idle Stop
Screw Against Stop
d-Idle Stop Screw
2. Check preload on throttle cable by placing a thin piece of paper between idle stop
screw (a) and idle stop (b). Preload is correct when paper can be removed without
tearing, but has some drag on it (readjust throttle barrel, if necessary).
a
b
57839
a-Idle Stop Screw b-Idle Stop
To Next Page
Loading...
Need help?
General