* Misfire: This is the most common reason. A cylinder isn't firing properly, leading to rough running, loss of power, and potentially catastrophic damage if continued. Causes include:
* Spark plug issues: Worn, fouled, damaged, or incorrectly gapped spark plugs.
* Worn spark plug wires: Cracks or damage causing poor spark delivery.
* Ignition coil problems: A failing ignition coil (or module) can prevent spark to one or more cylinders.
* Worn distributor cap and rotor (if equipped): These components distribute the spark; wear can lead to misfires.
* Fuel injector issues: A clogged or failing fuel injector can prevent sufficient fuel delivery to a cylinder.
* Low compression: A problem with the valves, piston rings, or head gasket can reduce compression in a cylinder.
* Catalytic Converter Damage: A misfire can severely damage the catalytic converter, which will also trigger a flashing check engine light. A damaged converter can restrict exhaust flow, leading to further engine problems.
What to do IMMEDIATELY:
1. Avoid high RPMs: Driving at high RPMs with a misfire will exacerbate the damage. Drive slowly and carefully to your nearest mechanic.
2. Get it diagnosed: A mechanic can use an OBD-II scanner (although 1996 might require an older scanner) to read the trouble codes stored by the computer. This will pinpoint the specific problem.
3. Don't just replace parts randomly: Guessing at the cause and replacing parts without a proper diagnosis is a waste of money and may not fix the problem.
Ignoring a flashing check engine light can lead to costly repairs, including:
* Engine damage: Severe misfires can cause damage to pistons, valves, and other internal engine components.
* Catalytic converter failure: This is an expensive part to replace.
In short, a flashing check engine light is a serious warning sign. Get it checked out immediately by a qualified mechanic to prevent further damage and potentially costly repairs.
