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.
1990 Jeep Wrangler Laredo, AutomaticFACTORY OEM SERVICE PROCEDURE
Component Locations
COMPONENT LOCATIONS
| Component | Location |
|---|---|
| Coolant Temperature Sensor (CTS) | On left side of engine |
| Engine Speed Sensor | Attached to flywheel cover housing |
| Ignition Control Module | Mounted to ignition coil |
| Knock Sensor | On lower left side of engine |
| Manifold Absolute Pressure (MAP) Sensor | Under the hood, on firewall |
| Manifold Air Temperature (MAT) sensor | On intake manifold |
| Sync Pulse Signal Generator | Inside distributor |
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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