I have a ford focus 2000. I was with the light of engine problem. I check with the mechanic. They change the 2 oxigen sensor. But still the light on in the left size. About engine problem. When I stop in a traffic light my engine is almost down and when i will parking i put parking and inmeditly is turn off the car. Im not sure what is the problem. Please would you help me
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you have a single 3 or 4 pin connector to the coil pack. Someimes the wires get corroded and break off at the connector. Ford has a pigtail kit to fix that issue. Usually a misfire with the check engine light on.
Green/bluestripe is from ignition switch
Black/green stripe is to PCM (computer)
Black/orange stripe is to PCM
These last 2 wires are what the PCM uses to fire the spark plugs 2 at a time.
when i was working in my local ford dealership the only way we were able to remove that light was to access the vehicles ECU and delete the trouble codes that were on there. provided there is no actual problems with your vehicle clearing the codes should solve the problem. if there is more to it then the codes will reapear and bring that light back up.
Generally your local mechanic or ford dealership will have the scan tool required to remove the codes
i hope i have helped
first of all, if light is on have it scanned for a problem code. if no scanner all auto parts stores will scan for free. there has been over 200 recalls for 2000 ford focus, check with ford to see if this is one of the problems. god bless, this is a long run, but check and see if fuel is getting to fuel pressure regulator.
The ford focus suffered from leaking washer jets. The water leaked down into the recess for the spark plugs, causing them to misfire.
Sometimes this put excessive load on the ignition coil and it failed too.
Also i have had, worse case is the coil short circuits back up the earth switch, back to the ECU, blowing that.
The car still runs but only on 2 cylinders.