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.
1991 Mercury Cougar LS, 3.8 4FACTORY OEM SERVICE PROCEDURE
Engine Controls - Remove/Install/Overhaul: Distributor: Removal
- Remove high tension lead and distributor cap. Align timing marks on TDC of compression stroke. Disconnect distributor wiring from harness. Note direction rotor points, and mark distributor base for installation reference.
- On 2.2L non-turbo, mark and disconnect 2 vacuum lines from distributor diaphragm. On all models, remove distributor hold-down bolt(s) and clamp. Some engines may be equipped with a security-type distributor hold-down bolt.
- If necessary, use Distributor Hold-Down Wrench (T82L-12270-A) to remove bolt. Remove distributor. To install, reverse removal procedure. Set base ignition timing. See the ADJUSTMENTS article in this section.
Factory Service Tools
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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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