2000 Ford Focus Slow Acceleration and Pulsating at Stops?
I have already replaced spark plugs and wires and I suspect that it is the Ignition Coil that is the problem.
The check engine light is constantly on and begins to flash on occasion while accelerating.
Could it be anything else other than the ignition coil? I'm a poor college grad and can't afford a new car at this moment or dumping money in "fixes" that don't fix the problem.
I'm a semi-novice so explanations would be great.
It has a 2.0L, 4 cyl engine.
Added (1). The spark plugs and wires were definitely in need of a replacement.
It probably relates to the computer wearing out. This happens to most cars around 120k miles or so. Especially black cars (get much hotter and heat = death for micro processors)
Nearly everything in a car today relies on the computer to tell it how to mix the gas and air, when to spark, etc. It listens to sensors reading exhaust and intake, etc.
Now it could relate to a dirty MAF and/or MAP sensor (both located in the throttle body)
Don't just replace things on assumptions. Test them to see if they actually need to be replaced. You can easily look up methods for testing things.
You need special cleaners (one for each type of sensor) in the throttle body. They will be damaged by improper cleaning.
Needing plugs and wires can cause poor excelleration but the pulsating is a vacuum leak with fire extinguisher handy spray carb cleaner around intake manifold brake booster vacuum line where injectors mount and any vacuum line you see DON'T spray at distributor, distributor wires this is why you should have fire extinguisher handy… This is not a shade tree manuever its the way vacuum leaks are check for in a garage
There are many auto parts stores that will read computer fault codes for free, find out why your check engine
light is on. A flashing check engine light indicates that the problem must be fixed immediately to avoid damage to emission related parts. Get your codes read then go from there, don't waste money on parts you might not need
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