Just got my 03 back from misfire, gasket replacement (oil in coil area) and full tune up $550. Car running fine for week and a half. Now at idle my engine is shaking and sputtering(rpm) but still runs ok. Could this be bad gas or what? Always use 93. No engine light as of yet. What could be problem and what to do? Very angry but love my car!

SOURCE: car is shaking, idles funny, feel like its running on 4cyl not 8

Hello lovnmymustang,

Thank you for choosing fixya.com. So, you're getting bad gas mileage, and getting a deep sound when you push the gas. Try these suggestions first:

1. Replace O2 sensors; have code cleared at auto parts store if it has come on (service engine light will come on)
2. Replace the fuel filter and the air filter
3. Change the spark plugs/wires/coil pack(s)(carborator if equipped and not coil pack(s) )
a. If coil pack is replaced, check the modular as well (sits under coil pack)
b. If carborated, replace cap and rotor
4. c. Regardless of a or b - change spark plugs and wires

In the main title above (my current page) it says 'car is shaking' - if this feels like it's in the steering, have a front end alignment checked (and performed) if needed. If it feels like the engine, do the above suggestions.

I hope this information aides in the successful repair of your Mustang. Please, let me know if there is anything more I can be of assistance to. Thank you again for choosing fixya.com

carsandcomps
Guru, fixya.com
Oregon

SOURCE: 2000 lincoln ls cracked head???

Previous to 2000 Ford had a cylinder head gasket problem with some of the v6 engines failing at two cylinders at opposite corners of engine (don't know what engineyou have) They supposedly corrected that, but I'm not sure how well the correction worked. I doubt if the cylinder head is cracked but if some amount of compression is getting into cooling system it's possible that it may give you strange sensor readings. When testing, it's also possible that some air escaped and returned everything to "normal" ('till it builds up again).
At this point, I would get a second opinion on this. As well as a comprehensive computer scan, have someone do a radiator hydrocarbon test...that will reveal any compression in cooling system from gasket or any other source. (Don't mention that it was checked before, just say what originally happened so objective testing will be done.)

SOURCE: running on half the power, running rich and rough idol

You likely got water under the coil cover while detailing it. I would take the covers off, clean all the water out and dry it out. Take each coil out, dry it out and reinstall it with some dielectric grease in the boot and hope for the best.

I had a customers with an 02 LS recently that had a similar problem. I tried to get away with just replacing the problem coil. But every other week he came back with a misfire an another cylinder. We ended up replacing every coil and it's been good ever since. Be prepared to shell out for 8 new coils eventually. Get new covers while your at it. The coils are about $90 each, covers are $17 each.

SOURCE: 1999 town car, check engine light code shows 3rd

timing

SOURCE: lincoln ls stals n drains battery

yes