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Common signs include engine misfires, car not starting, the Check Engine Light coming on, and excessive or unusual engine noises. Our certified technicians can come to you and diagnose the problem. You will receive a $30 credit towards any follow-up repairs that result from the diagnostic. Following are example prices for Distributor Cap and Rotor Replacement. Click on the button below to get an upfront quote for your car.
|Cars||Estimate||Parts Cost||Labor Cost||Savings||Average Dealer Price|
|2003 Volkswagen Jetta||$111||$41.32||$70.00||25%||$148.82|
|2004 Aston Martin DB7||$110||$40.10||$70.00||25%||$147.60|
|2004 Chevrolet Express 3500||$154||$69.56||$84.00||22%||$198.56|
|2008 Cadillac CTS||$115||$44.96||$70.00||24%||$152.46|
|2004 Audi A6 Quattro||$128||$57.99||$70.00||22%||$165.49|
|2004 Mercedes-Benz S55 AMG||$277||$207.24||$70.00||11%||$314.74|
A running engine sends a large amount of electricity through the ignition coils to the rotor, which turns inside the distributor. The rotor routes the energy in a specific through the spark plug wires ultimately to the engine’s cylinders in the correct firing order.
The distributor rotor and cap keep the distributor’s contents separate from the engine and keep the distributor’s working parts clean and tidy – while supporting the incredibly high volts of energy and delivering them to the appropriate spark plugs. The spark plugs utilize the spark from the distributor to ignite the fuel mixture, which is what keeps the engine running.
High voltage runs through this entire distributor system during the operation of your vehicle, but if there's an issue this voltage won’t get distributed to the correct spark plugs to ensure that your engine will run. Usually a faulty distributor rotor and cap will produce a few symptoms that alert the driver that service may be required.
When the distributor cap isn’t on tightly or is malfunctioning, the engine is unable to send the spark through the entire circuit required to move the cylinders – which ultimately make the car run.
Your Check Engine light can mean a number of different things, but when you see this light on along with some of the other symptoms listed here, it’s time to call a professional to see what the code is from your car’s computer.
Your vehicle may make some very strange noises if the distributor rotor and cap are malfunctioning – specifically because the cylinders will try to fire but fail. You might hear a tapping, clicking, or sputtering sound when the distributor rotor and cap are failing.
Any time you have routine service performed on your vehicle, ask that the ignition system be checked for defects or problems. If you experience any trouble starting your car get assistance from a qualified mobile automotive technician from YourMechanic.