Question about 2002 Ford Taurus

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What do i need to check if the number three cylindar is miss firing. I have ignition coil, spark plugs, fuel filter, air filter. I had and oil change as well.

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Have you had it scanned anywhere. If its misfiring, the computer will read it as a misfire. if it is misfiring, the probable cause is the fuel injector. have you changed the plug wires with the plugs?

Posted on Mar 11, 2011


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Car was serviced and now will not start They changed the oil filter, air filter, fuel filter, new NGK Spark plugs, oil and added anti freeze Anyone that can help please do. Thanks

Serviced where ? If you think that they may have done something to cause this problem ,take it back to them . You need to test thing's before replacing parts . What's missing SPARK or FUEL . Go on youtube check out videos on testing ignition system an fuel systems .

May 24, 2016 | Cars & Trucks

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I changed my 2001 crown victorias oil, oil filter and spark plugs now it wont accelerate how it should

coil,distributor or ignition coil packs that produce proper firing ..but first save some cash and change your fuel filter and also check injectors have a fuel pressure test done at a shop

Oct 23, 2013 | Ford Crown Victoria Cars & Trucks

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What is needed for a tune up?

Thanks for choosing FixYa and welcome. For a tune up, you would need to change spark plugs, coils, distributor cap, coil pack, and wires. You would change the air filter and the fuel filter also. Change your pcv valve as well. You can also change all your fluids and filters, such as oil, coolant fluid, and transmission fluid.

Apr 25, 2011 | 2000 Chevrolet Blazer

1 Answer

1999 Lincoln continential will not start

I would first,change the spark plugs only if they were in the motor,say three years and 50,000. Not just to fix a misfire
Second you can only change a COP Coil, if you have a code or a way of knowing which one is bad. Again,why would you change all of them, when they all now work?
Crank Sensors rarely fail,so what test did you do to determine that was necessary? would you know ,you had a missing coil, if you had no crank signal?
Now lets go from where you are now
Did you check fuel pressure,key-on ,eng off,with a pressure gauge?
Fuel filter fairly new?
Do you have all the ducting from the air cleaner to throttle body on and no vacuum leaks?
Do you have the MAF sensor connected. No signal,no start!!

Let me know what help you need

May 08, 2010 | 1999 Lincoln Continental

1 Answer


I always check compression at wide open throttle...I'm not happy with the two 90's but it should start.
I'm also not happy with variation in spark intensity and wonder what's going on there.
What I'd probably do at this point would be to disconnect the fuel pump harness so no fuel will pump, clear the engine of fuel in the cylinders by disabling coil and spinning the engine over with rags over the plug holes.... Make sure there are no sparks or you will have a fire.
Then, replace the plugs and re-connect coil but not pump and spray carb cleaner into intake while turning it over with the key in the on position so you can regulate the amount of fuel (cleaner) see if you can get it to start to get some heat in it. If it starts, then plug the pump back in.
If it ran before with no problems there isn't any reason it should not now unless something deteriorated.
if you still get nothing, you will need to run tests on each component using a haynes or chilton manual as a guide and a digital multi-meter. Make sure all ground connections are clean, including block ground, firewall ground and both fenders, especially any computer leads connected to ground. It won't hurt to remove each relay and just plug them back in to re-establish contact too. If you find anything strange, ask and I'll try to help with that.

Apr 02, 2010 | 1985 Jeep Cherokee

2 Answers

Car will not start.Engine turns over but spark plugs willnot fire

I would say replace ignition coil, that might me the problem, otherwise it can be the ecu, which might have some electrical problems not allowing the car to stay running. Good luck.

Dec 29, 2009 | 1997 Eagle Vision

3 Answers

Misses during acceleration , rough acceleration, service engine soon light on, power loss, still runs fair, 2000 ford expedition

Go get the codes ran at auto zone or advance auto parts they will do it for free. If the codes come up as a cylinder miss-fire then it is most likely a coil (being a ford). Write down which cylinder it is. I wouldn't replace any of the spark plugs , useless you have more than 100,000 miles. If you have to replace the spark plugs use BOSH double plautim or better. The cylinder placing is ( as your are looking at the front of the truck) passenger side front to back 1-2-3-4 driving side front to back 5-6-7-8. If you never seen a coil buy one so you know what you are looking for. The coil is held in by a 7mm bolt. Take the bolt out and replace the coil. Problem Solved. Estimated time 20 Mins with 60 dollars per coil.

Mar 10, 2009 | 2000 Ford Expedition

1 Answer

Changing spark plugs

Changing the spark plugs on a 1997 Ford Expedition 5.4L engine takes patience. Remember to start this project on a cold engine! I started on the passenger side by locating the Coil over iginition coils and cleaned out all the old dirt using some compressed air. Then I had to disconnect the electrical connections to both the Coil over ignition coils and the passenger side fuel injectors. Once you remove the small bolt which holds the ignition coil in place, use your compressed air again to blow out the spark plug hole. After that, you will need a 5/8" swivel spark plug socket and various length extensions to remove the spark plugs. Take your time because there is not much room for your hands. Before installing the new plug, check the gap and use clean engine oil on the new threads. Tighten the new spark plug and reinstall the coil over ignition coil. Reconnect the electrical connection to both the ignition coil and the fuel injector. Continue these steps with all eight spark plugs. You will find the ones on the drivers side are difficult because of the fuel rail gets in your way. Have patience and use swivel extensions to work around the tight spaces. When you are done, you will have saved lots of money! Don't forget to replace your air filter, fuel filter, and pcv valve to complete your tune up.

Jun 19, 2008 | 2003 Ford Expedition

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