Question about 2003 Ford Focus

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My car is shaking alot when it starts and stops at a stop light

The spark plugs have been changed and gapped to the proper width and when plugged up to check for diagnostics it did passed. Could it be the gas or something else?

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It could be the catalytic converter if its clogged it wont let the car run right

Posted on Dec 25, 2008

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Sounds more like a bad coil pack to me, might have them checked out! Merry Christmas!

Posted on Dec 25, 2008

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1 Answer

The engine light turned on . Also the car shakes a lot when I stop only and idling. I had the spark plugs and coils replaced and still shakes.


Did it do it before? If not did you gap the plugs. Also make sure your coils are in all the way. Then go buy a scanner its worth the money

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I have a lincoln towncar that i have been fixing since day One it has cost me alot of money. and now it has a new problem i recently changed the spark plugs and now my car starts to shake and turns off if...


Be sure the plugs are the right kind. Compare with the ones you took out if you still have them, if not check manufacturer s specified type. If they are, be sure they are correctly gapped and the electrodes didn't close up too far during installation then lastly check your coils to be sure they are fine.

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Is it the car or the engine that shakes? If its the car then you might have an abnormal wear on your tires or you have a warped rim, or possibly somthing stuck in your suspension, hopes that somewhat helps.

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I change the spark plug and after starte to shake ann act weir and check engine light came on


Did you gap the spark plugs, or did any of the spark plug wires get damage while removing them, or did a spark plug wire get crossed,the engine light is most likely a cylinder misfire, I would check or replace spark plug wire's.

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After having a tune up my car is still shaking when I stop at the lights what could be the issue


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We replaced the spark plugs and boots but my


The plugs that SHOULD of gone into the car SHOULD of been delco platinum's. You cannot set the gap on these, you will damage the plugs if you try. There could be a problem else where in the car besides the plugs and wires. You sure the coils are good? Meaning do you have spark to the new plugs via the new wires?

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Engine shakes after changing sparks plugs & wires on 02ChevyTahoe


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