Took car to mechanic due to check engine light said it was a mis- fire and needs a tune up. they did the tune up and put a new intake system. A week later the check engine light is on again with the same original problems rough idling and no power when going up hills. Mechanic said it was bad coils which are not part of the tune up. I paid him $1000 to fix my car and if I can do this on my own and save some more $ then I need to know how to replace the coil pack . Thanks
Please tell me in this tune up you had new spark plugs put in? if check engine light is on there are some stored codes those will give you the suspect cylinder(s) check to see if you have plug wires if not there will be a coil for each cyl. pass. side of motor starting in the front working to the back or firewall cyls are 1,2,3,4 driver side same front to back 5,6,7,8 codes will be PO301 cyl 1. PO302 cyl 2. etc. get the code find the correct cyl. unplug little connector u will need a 7mm socket to remove the bolt holding the coil in place then pull up on the coil and boot.... if u have plug wires get the code find correct cyl and follow plug wire to coil pack in front of engine there will be two one on each side in front of engine...
SOURCE: 96 Ford Windstar runs rough, check engine light on
Sounds like you have some EGR ports clogged up, remove the intake and look at the egr ports all but
#1 cyl port will probably be at least partially clogged, hope this helps
SOURCE: new coil pack in 1998 Ford Escort failed in one week?
alright the most likely cause is the spark plug wires. put a set of wires on it and let us now how things are. good luck.
SOURCE: My 1999 Expedition shakes and runs rough.
you need to remember that Autozone is good for the checking of codes for free,But they are not mechanics!,
there is no code that says replace the plugs and wires,
and there is no code that says replace any coil
SOURCE: firing order for a 2003 ford focus 2.0l
Check and verefy this firing order...
2003 Ford Focus 2.0 liter DOHC L4 VIN "5" and VIN "3"
2003 Ford Focus 2.0 liter SOHC L4 VIN "P"
Hope thats help.
SOURCE: ENGINE IDLES ROUGH IVE CHANGED PLUGS WIRES COIL
You might want to look at that injector for that cylinder.I worked on a GMC Jimmy that did the same thing and I also changed all the sensors come to find out that my injectors and the spider assembly needed to be changed.
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