INTRODUCTION
| CAUTION | When battery is disconnected, radio will go into anti-theft protection mode. Obtain radio anti-theft protection code from owner prior to servicing vehicle. |
ENGINE MECHANICAL
Before performing any on-vehicle adjustments to fuel or ignition systems, ensure engine mechanical condition is okay.
ACCELERATOR PEDAL CABLE
| WARNING | Accelerator cable is easily kinked, handle with care. If accelerator cable is kinked, replace cable. |
Note. Accelerator cable is fixed to accelerator pedal and cam disc. Length of accelerator pedal cable sleeve is not determined by securing clip.
- Pull off accelerator cable locking plate at throttle body. Depress and hold accelerator pedal to Wide Open Throttle (WOT) position. On automatic transmission vehicles, go to next step. On manual transmission vehicles, pull cable sleeve away from cam at throttle body until throttle valve has opened fully. Go to step 3).
- Pull cable sleeve back toward WOT position until throttle valve is fully open and kickdown switch is actuated (clicks). Go to next step.
- Hold tight in this position. Insert securing clip for cable sleeve. (Scheme 1) Release accelerator pedal. After adjustment, ensure throttle opens to WOT position and closes until closed throttle stop is contacted. (Scheme 2)
Scheme 1
Scheme 2
CLOSED THROTTLE POSITION (CTP) SWITCH
Note. Closed Throttle Position (CTP) switch is located within Throttle Position (TP) sensor. By adjusting CTP switch, TP sensor is automatically adjusted.
Remove throttle body assembly from engine. Loosen 2 TP sensor mounting screws. Turn TP sensor counterclockwise without moving throttle shaft until stop can be felt. (Scheme 3) Tighten 2 TP sensor mounting screws. Reinstall throttle body assembly. Adjust accelerator pedal cable.
Scheme 3
ENGINE SPEED (RPM) SENSOR BRACKET
Note. DO NOT arbitrarily change bracket adjustment. Engine speed (RPM) sensor bracket is adjusted during vehicle assembly and should not be changed. If adjustment was changed, perform following procedure.
- Rotate engine crankshaft by hand to Top Dead Center (TDC) position. (Scheme 4) Remove Crankshaft Position (CKP) sensor from left side of cylinder block. Look and feel for TDC hole in crankshaft through opening in block. Thread crankshaft Holder (3242) into CKP sensor opening and tighten slightly. (Scheme 5)
- Remove engine speed (RPM) sensor and heat shield from left side of cylinder block. Loosen engine speed (RPM) sensor bracket. Install Adjuster (3308). (Scheme 6) Ensure adjuster engages teeth in ring gear. Tighten engine speed (RPM) sensor bracket. Remove adjuster. Install engine speed (RPM) sensor and attach heat shield. Remove holder and install CKP sensor on left side of cylinder block.
Scheme 4
Scheme 5
Scheme 6
IDLE SPEED & MIXTURE
Note. Idle speed and mixture is electronically controlled by Powertrain Control Module (PCM) and cannot be adjusted.
| Application | Specification |
|---|---|
| Idle Speed | 650-750 |
| CO Content | 0.2-1.2% Of Volume |
| (1) Controlled by PCM and not adjustable. | |
| (1) | Controlled by PCM and not adjustable. |
IDLE SPEED & MIXTURE (1)
IGNITION TIMING
Ignition timing is electronically controlled by Powertrain Control Module (PCM) and cannot be adjusted.
VALVE CLEARANCE
| WARNING | After lifters are reinstalled whether new or used, DO NOT start engine for 30 minutes, as valves may hit pistons. Lifters must be allowed to bleed down before starting engine. Turn crankshaft 2 full revolutions before starting engine to ensure valves do not hit pistons. |
All models use hydraulic valve lifters. No adjustment is necessary. To check a suspect valve lifter remove valve cover and turn crankshaft clockwise until cam lobe of suspect valve lifter is pointing upwards. Using a plastic or wooden dowel push valve lifter down. DO NOT pry on lifter. Attempt to insert a .008" (.20 mm) feeler gauge between camshaft and lifter. If feeler gauge fits between camshaft and lifter, replace lifter. If feeler gauge does not fit between camshaft and lifter, lifter is okay.