Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHRYSLER1987FIFTH AVENUE 5.2 4REPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETUNE-UPIGNITION SYSTEMTESTINGELECTRONIC THROTTLE CONTROL SYSTEM
1987 Chrysler Fifth Avenue 5.2 4
Electronic Throttle Control System
1987 Chrysler Fifth Avenue 5.2 4SECTION Electronic Throttle Control System
NOTE:
The spark control system is integral with the electronic throttle system. A solenoid mounted on the carburetor is energized whenever the A/C compressor, Electronic Backlite (EBL) or electronic timers are activated. The electronic timers used in the ignition system operate when the throttle is closed (plus a time delay of 2 seconds) or after an engine start condition.
- Connect a tachometer to engine. Start engine and run until normal operating temperature is reached. Depress accelerator and let up. A higher than curb idle speed should be seen for the length of the EGR timer.
- On vehicles equipped with A/C, turn on A/C and EBL. Depress accelerator pedal momentarily. This should cause a higher than normal curb idle speed. Turning the A/C and EBL off, should cause a normal curb idle speed.
- If speed increases do not occur, disconnect 3-way connector at carburetor. Check the solenoid with an ohmmeter by measuring the resistance from Black wire terminal to ground. If resistance is not between 15-35 ohms, replace the solenoid.
- Start vehicle and measure the voltage of the Black wire of 3-way connector before the delay times out. The voltmeter should read charging voltage. If not, replace SCC computer.
- Turning on the A/C or EBL should also produce a charging system voltage on the Black wire of the 3-way connector after the delay has timed out. If not, check the wiring to the instrument panel for an open.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.