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.
1989 Cadillac Seville BaseFACTORY OEM SERVICE PROCEDURE
DFI Tests W/O Codes
- Diagnosis & Testing
- How To Use This Article
- Intermittent "Service Now/Soon" Light
- Hard Start
- Stalls After Starting
- Hesitation Or Stumble
- Surges &/Or CHUGGLE
- Detonation, Spark Knock
- Lack Of Power Or Sluggish
- Cuts Out, Misses
- Backfire
- Poor Fuel Economy
- Rough, Unstable Or Incorrect Idle, Stalling
- Dieseling
- Excessive Exhaust Emissions (Odors)
- Intermittent Engine Stall, No Codes
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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