Question about 2007 Ford Crown Victoria LX Sedan

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Misfiring and skipping, loud noise coming from engine - especially when idling.

My sons car is acting up - it seems to be misfiring - skipping while gas pedal is down.... Very sluggish. AND it's making the most obnoxious loud noise, I thought it was the gardner the other day when I parked it in the driveway. Odd thing is that while it sounds like the engine is going to blow up - there's no warning signs such as a check engine light or car running hot - neither of those is happening????? Help! Thanks! K ;)

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  • 14 Answers

You need a tune up OR the block is cracked from overheating.

Posted on Jul 10, 2017

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Posted on Jan 02, 2017

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SOURCE: THE CHECK ENGINE LIGHT

These are classic symptoms of an O2 sensor.Go to autozone and ask them to read the engine code. They will tell you what is wrong more conclusively.

Posted on Aug 12, 2008

tshot2020
  • 23 Answers

SOURCE: 2004 Ford Taurus V6 noise underhood appears to be belt

Sounds like a bad idler pulley,or belt tensioner. Most likely not water pump since the check engine light is not on. Altho it couold be the water pump and for some reason (bad sensor, burnt out light) the check engine isnt coming on. Either way it would be best to have it looked at.

Posted on Apr 21, 2009

  • 1986 Answers

SOURCE: engine light has come on and car is misfiring,

Main causes of misfire would be loss of spark; the air/fuel mixture is too far out of balance to ignite; or loss of compression.

Loss of spark includes anything that prevents coil voltage from jumping the electrode gap at the end of the spark plug. Causes include worn, fouled or damaged spark plugs, bad wires or even a cracked distributor cap. A weak coil or excessive rotor gas inside a distributor would affect all cylinders, not just a single cylinder.

"Lean misfire" can occur when the air/fuel mixture is too lean (not enough gasoline in the mixture) to burn. This can be caused by a dirty, clogged or inoperative fuel injector; air leaks; or low fuel pressure because of a weak pump, restricted filter or leaky pressure regulator.

Loss of compression means the cylinder loses most of its air/fuel mixture before it can be ignited. The most likely causes here are a leaky (burned) exhaust valve or a blown head gasket. If two adjacent cylinders are misfiring, it's likely the head gasket between them has failed. Also, if an engine is overheating or losing coolant, it's likely the head gasket is the culprit.

You can isolate the weak cylinder by temporarily disconnecting each of the spark plug wires, one at a time, while the engine is idling. When there's no change in the idle speed, then you have pinpointed the weak cylinder.

Posted on Aug 25, 2009

  • 134 Answers

SOURCE: Engine warning light comes on, diagnostic says

if your car give you i code thats says mutlipul misfire on number 1,2,3,or four cyl. that means that that cyl is not firing when its suppost to so if the code says number 3 cyl misfire or multipul misfire replace number 3 spark plug and coil pack and 80% of the time that will solve the problem.

Posted on Oct 08, 2009

Testimonial: "At least i now have an idea, i didn't get any info from the dealer about codes only workshop jargon. The car wasn't fixed and they still charged me."

  • 1 Answer

SOURCE: 96 Ford Explorer is studdering (misfiring) when going up hills

I have the same exact problem that just started immediately AFTER I got a tranny service where they changed the Trans Fluid, Trans Filter, Fuel Filter. Took it back and they say nothing is wrong with it. Took it to the dealer thinking I could get some REAL answers... they just told me to replace spark plugs, wiring & coil, for $900. Only studders when quickly accelerating above 40mph. I've check other forums, they say to clean the Mass Air Flow sensor. Haven't tried it yet. This seems the easiest before replacing spark plugs. Any other suggestions anyone?? Please.....

Posted on Nov 04, 2009

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1 Answer

I'm having multiple misfire on my honda pilot and I took it to an auto parts store to check on the codes and I got P0300. They told that cylinder # 6 and five are misfiring so I started by replacing my...


probably nothing because the fault may be the injrctors or injector wiring
plugs and coils are tha last items to cause misfiring while injectors nad low fuel pressure are the first

May 20, 2017 | Cars & Trucks

1 Answer

Why does my vehicle stall when at idle.


Intermittin Engine Stall
Engine No Start
Missfire
MISFIRE IN motor cylinder is more likely the cause to engine stall and hard start.
You will have to fix this problem first,
A misfire, most the time, is caused by, incorrect cylinder firing order (diagram at bottom). Or no or low cylinder compression
no or low compression is the result of A Vacumm leak.
If the timing chain was recently replaced, the valve cover had to be removed, the valve cover gasket could cause a huge vacumm leak which would effect some if not all 6 cylinders,

Symptoms
Lack/loss of power
Hard start
Engine hesitation

For Now
check firing order( coil pack to sparkplug)
check sparkplugs

NISSAN 3.5 V-6 FIRING ORDER
SPARK PLUG GAP 0.050''
SPARK PLUG TORQUE
COIL PACK LAYOUT
3_5-h-dqdssqkoffgbcnef4yme1fk4-1-2.jpg

I hope this helps for now
If you have any questions, you can email or post back
Jtobias1020@gmail.com

Mar 07, 2017 | 2006 Nissan Quest 3.5

1 Answer

My engine seems to skipping?


Check the condition of the spark plugs and high tension (spark plug wires) leads.

Nov 04, 2012 | 2002 Jeep Grand Cherokee

1 Answer

3rd cylinder is misfiring. how to fix?


For engine misfiring problem check the help links mentioned below. Click the link below to go through the troubleshooting procedure :---- Engine misses and truck jumps? Hard to down shift? Issue with high gear only? http://technoanswers.blogspot.in/2012/02/engine-miss-and-truck-jumps-hard-to.html

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Bad miss at idle?

http://technoanswers.blogspot.com/2012/01/bad-miss-at-idle.html

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While stop engine idles like cylinder missing?

http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html

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Engine Misfire codes for car?


http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html
Engine Misfire codes?

http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html

--------------
Misfire on cylinder 4?

http://schematicsdiagram.blogspot.com/2011/12/misfire-on-cylinder-4.html

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Oil on spark plugs and car misfires?

http://technoanswers.blogspot.in/2012/02/oil-on-spark-plugs-and-car-misfires.html

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This will help.

Thanks.

Mar 07, 2012 | 2006 Chrysler Sebring

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I have a 2005 kia sorento v6 3.5L. the check engine light is on as it has been misfiring now for the last couple weeks. after a scan, using a unversal scanner, it revealed a misfire on cylinders 1, 3, and...


Notice that all of the misfiring cylinders are on the same side of the engine. How was it determined that this is an electrical issue? I would expect further codes to turn up as a misfire code is not very informative. Good luck!

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1 Answer

Misfiring in idle and up hills


I had a problem with misfires on a Buick V-8. My engine would act up the first time it was raised above idle. If you started it at idle it ran smooth, but once it gained rpms that was it. My problem was weak valve springs. Even with hydraulic lifters it did not rattle, click, or give any indication it was running loose. Take off each valve cover separately and while the engine runs put your thumb on the valve spring. If you can make it misfire by pushing down on the valve spring it is weak. Repeat on the other side. It will be messy.

Jun 05, 2009 | 1999 Pontiac Grand Am GT

1 Answer

The engine seems to be making a sputtering noise


Amelia, we just bought one off a lease 5 weeks ago (purchased from a dealer). We are having the same symptoms, suddenly, as you describe.

Took it back to the dealership. After a bit of drama, they agreed to foot the repair bill ($1000). It was a broken distributer cap and wiring which should have been replaced before it was resold to us. What a pain.

Jun 01, 2009 | 2007 Ford Freestar Limited Minivan

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2000 volkswagon jetta engine noise and new plugs skipping


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