Question about 1997 Chevrolet Cavalier

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The engine is missing and shaking bad. I changed the coils, spark plugs, and spark plug wires. I have checked to make sure that the spark plug wires are in the right order..

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Did you make sure they are gapped right?

Posted on May 07, 2010

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98 f150 missing shaking changed plugs changed throttle positioning sensor still not better. did notice that the coil pack on back side of engine loose could this be the issue


Change spark plug wires, One bad wire can cause it to run rough end mmiss fire.As for the coil pack tighten the bolts up,

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Whats causing my truch to vigoriously shake when idoling and between 50 to 60?


A misfire should have Coded on the check engine light. You have 2 systems for each cylinder. Gas and spark. A dirty injector can cause a miss. A bad plug, wire, or coil on plug (if this truck has the newer system) can cause a miss.

You can try a new injector for the one cylinder and see if that helps. Really depends on which engine you have for difficulty in getting to the plugs. The 5.4 series had deep boring for plugs and there are books about this problem. I believe the coil on plug type coil has a resistence of 10,000 Ohms from the top terminal to the base of this coil. It may need to be benchchecked.

As your service light did not work, perhaps you should find out if its lightbulb is missing. I hope my solution is helpful.

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Hello my name is brad,check number 4 plug wire,or the number 4 coil on demand,or you could have a bad injector.brad

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Check engine light is on, they say multiple miss fire in cylcinder 6. but no one can find the problem van runs great


first do a cylinder compression test on engine to verify good engine compression this should be around 110psi to 175 psi check for vacuum leak, intake port for #6 cylindermay be leaking air, or also check coil for that cylinder, if wire and spark plug have already been changed, last replace fuel injector for that cylinder.

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1 Answer

2005 chevy cobalt 2.2 is running rough (putting)


Number three cylinder is miss fire,it does not mean it is the coil,although it could be,remove the coil,and boot,and spark plug,inspect them to see if the plug,or boot look bad,replace the spark plug,and if the boot is burned or distorted,replace it,a fuel injector can cause a miss fire also,but change the spark plug and see if this solves the problem,if not replace the coil,if it is a dead miss,then the coil might be bad,as for the water in the fuel ,the cap is missing,,and 5 dollars worth of HEET will not hurt,also,fuel from the fuel station,can have water in it.It happens a lot.

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1 Answer

99 vw passat, when running, MIL lite, on car vibrates- shakes


no flashing light and rough shaking will be part of spark plug but also a very bad miss fire. I am going to guess that your engine is a 1.8t if so you have 4 coils that sit on top of your spark plugs that most likely are arcing you will need to figure out which coil is failing or you can save yourself the trouble and replace all 4 and the spark plugs. before you do that though check your wireing going to your coils look for broken wires or the ground that is next to the #1 coil that is the one closest to the front of the motor and you. hope that helps. that will be the start to fixing your issue also when you pull out the spark plug look down the hole first and make sure that there is not oil in the bottom of the hole if that is the case you will need a valve cover gasket as well. good luck hope that helps

Sep 16, 2009 | 1999 Volkswagen Passat

1 Answer

Engine missing on occasion when accelerating.


missing on occasion? you changed the plugs? was it missing before are after you changed the plugs? Missing is usually caused by a spark failing to jump across the spark plug gap.i would first look for a broken spark plug insulator. Secondly, bad spark plug wires ( if you re-used them the connector might have pulled off the wire internally) also look at the coil and distributor for cracks or other problems if the plugs and wires check out ok .

Mar 16, 2009 | 2006 Ford Five Hundred

1 Answer

There is an a engine miss in my es 300 99 lexus


If you have coils and spark plugs then you don't have wires. From personal experience these car's misfire because of coils and BAD INJECTORS. If you replaces coils and sparks plugs you need to check injectors. Get a NOID light and check injectors pulse to make sure it good. First you must locate the cylinder that has the misfire/Missing,this can be done by using a computer/code scanner or if can be manually by disconnecting each coil and see when there is NO change in idling or shaking. What you are looking for is when you disconnect the Eugine should shake more and when you reconnect it would smooth en out. If any cylinder when disconnected the engine doesn't change that the one with the problem. Check again for spark and make sure it good. Then check that injector pulse plug off injector connector and connect it to NOID light you should get a constant flickering of NOID LIGHT. If you do then BINGO that injector is BAD. However I must say this test is on valued if you have performed a compression test on all cylinders to make sure there are no BAD/Burnted valves. This can be done with a compression guage remember the reading should NOT be more than 10PSI difference between all cylinders example of a normal reading is cylinder 1 170 psi cylinder 2 168 cylinder 3 172..... abnormal is cylinder 1 170 cylinder 2 85 cylinder 3 172 ...etc. I know this is alot of info but read through and follow these step and you'll be ASE certified by the end of this job. Good luck and thanks for using FIX YA

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1 Answer

2002 mazda tribute es


check to make sure #5 spark plug wire isn't bad,make sure you have not wired it wrong from changing plugs. You should purchase a chilton manual if you haven't already

Oct 02, 2008 | 2002 Mazda Tribute

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