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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2 Answers

06 chrysler town and country shakes. why?


Possibly a vacuum leak, double ck the spark plugs installed for the proper plugs. Were they gapped correctly?

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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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Hi this erik, i change my spark plug wires but the car shakes alot, what can i do.


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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My truck feels like it going to die when i am at a red light or stop sign also when i drive it feel jerky


Could be alot of things.....I'm willing to bet you haven't replaced your spark plugs in a while though. If not start with a set of plugs, make sure you gap them properly first.

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Chrysler cirrus 1998 stops while driving on highway


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I have a 1994 Toyota Tercel that shakes alot when idling at stop light. I put it in nuetral to stop shaking, but it seems to be shaking alittle now in nuetral. What can it be?


sounds like bad spark plug wires, with the engine running in neutral and emergency brake on, spray the top of the engine over the spark plug wires with a spray bottle of water, if the engine runs worse or stalls, or you see small sparks, then its the spark plug wires.

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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


could be a bad plug even know they are new one might be bad , first check in the dark for any arcing (blue sparks) coming from wires might be a split in one of the spark boots ,make sure on there good,also a chance you put wire to wrong cylinder

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