If anyone can give me insight/direction, I would greatly appreciate in short, bought a 2002 taurus ses, rough idle at lights, but drives like a champ on the highway, then get to a light, very rough...

http://www.obd-codes.com/p0316 --- Potential causes of this misfire code may include: Damaged or defective Crankshaft Position Sensor (CKP). CKP sensor wiring or connector fault. Poor fuel quality Ran out of fuel Ignition system malfunction Fuel system malfunction: injector or fuel pump Mechanical engine problem

I finding several others owners with similar issues. Some were dirty fuel filters, some were bad fuel pressure regulators and even some were bad idle air control valves. Hope this give you a place to start looking.

Thanks for taking the time to reply I will take the direction given and report back all have a safe wknd!

I see you say it has autolite spark plugs. Take them out and throw them away. Put motorcraft plugs in. Autolites are crap and fords hate them for some reason. The p0316 is just saying a misfire is dected in the first 1000 revolutions fixing the misfire will take care of that code

@KBRO, Thanks, this is very helpful, it looks like the coil pack and the autolites are just just a basic brand, I think if you say motor craft, I'll go motor craft and report back...if thats not it, at least I'll have some good equipment in there till I source this and report back

I hear ya kbro. For some stupid reason, my boss thinks Autolite plugs are the only aftermarket plug for our Crown Vics. At least he gets the Double platinum.

I wonder if the Taurus has a bad motor mount? That will shake things up (pun). Broken motor mounts are common on the taurus and they will cause vibration throughout the car in gear at idle.

There is a hidden vacuum line that corrodes and breads down. Its a short hose that runs from under the rubber intake boot to the under the front intake manifold and under the front bank of fuel injectors. This would be the engine side of the hose straight into the crankcase.IF YOU WERE NOT LOOKING FOR THIS HOSE YOU WOULD NEVER FIND IT. It becomes hard like and breaks apart like rotted wood. It then creates a massive vacuum leak that changes with temperature. BTW- Ford rubber parts from 2002 was of poor quality. It was all made in china from a company that shipped defective rubber all over the world. Toyota, Subaru, and Ford had the most problems in 2002 & 2003.

Two words: coil pack. These are notorious for cracking & causing the spark to jump to the nearest point that isn't necessarily the plug. Gets worse as it gets damp or rains; eventually will corrode to the point it won't run without a misfire even when dry. Recommend using a Motorcraft or a good one from a donor vehicle (tip: the 4.2V6 E150/F150 uses the same coil).

Thanks for the feedback 66Mike, I changed coil pack, it did improve for awhile....the EGR VALVE looks like it is next on list to change, easy to see, hard to work around, no youtube videos available on it, I tried, but could get a good position to take out the EGR valve, do you know of any videos or "how" to get it out?

I would suggest getting your vehicle properly dianosed. There are so many sensors and mechanical parts you can change and go broke without finding the real problem. My friend had this issue with his and it ended up being throttle position sensor. Funny thing is, he replaced it and when he brought the veh. to his mechanic, mech. found the new tps to be faulty, though new.Most mechanics charge by the hour , not the job. Good luck.

i'm having a misfire from my ford Taurus and white smoke I had it on the computer and the misfire is coming from the coil pack and oxygen sen bank #2 can you help me

would stop the white smoke

when I start it up first thing in the morning it with smoke but after like 15 mins it stops

Do a ford taurus have to have a ac compressor on it to run

Jimtaurus did you ever find out what was going on with it?

BITE the bullet and buy the machine or pay the 100.00 I vote vacuum leak - loose wire or hose - OR -- Cam synchronizer - do you have a squeak under the hood near the right side end of engine? Check that too - or take it to ur local chevy dealer - jack it up and drive a vet under it. Drive off - problem solved. .

My car was doing the same exact thing...come to find out it was a valve spring had broke...got it fixed runs perrrrrfect! good luck!

Jim did you ever find the problem

Misfiring or broken spark plugs lead to uneven cylinderwear. More than likely, one or more of your cylinders had to compensate for the bad spark plug(s)- or at least that's whats happening with my 2013 Taurus. I made sure to gap my plugs to owners manual specs, change the oil, top off coolants, and drive like a champ until all 4 of my ecoboost cylinders work like they are supposed to.

Your "theory" is flawed. If an Ecoboost engine had a broken spark plug, the PCM would recognize it and cancel the injector pulse to that cylinder. In addition, the enormous loss of power (over 50% in a 4 cylinder) is enough to keep someone from driving it in a miss fire state for very long. Add the fact that Ford has been using some of the best alloys that I've ever seen in manufacturing their Blocks, Pistons and Rings. Uneven cylinder wear indeed.

Ok, Tracy. I'm not knocking Ford....I'm knocking the previous owner of a Ford, that would leave the vehicle in a state with a bad ignition coil, pcm idle times that are out of control, an etc that delivers torque on its own free will, literal sludge in the cac, and the "worst ride ever" feeling simply because you decided to change the tires out- and that's my 2013 Taurus, in a nutshell. ( and don't get me started on the cheap plastic assembly they chose for the ventilation blend door actuators)

Keep in mind that the Engineers have to design a car that people can afford. I'm not sticking up for Engineers but, they do have constraints. Not much I can say for car owners though. Most people I know simply have the opinion that they only need to put gas in and go and if it doesn't go - it's a piece of crap.

I agree, Tracy. If vehicle owners would simply keep up with routine maintenance on their vehicles, there would be nothing for a guy like me to say. I suggest for people to read their owners manual, keep in mind their factory warranties, and do a bit of routine maintenance now and again. It will save them a whole bunch of money and headache in the longrun.

First; thank you all for your insight. I started by removing the coil wires one by one (while the engine is running) and found that i had two dead holes (no spark) i then replaced the coil pack and solved the problem. Thank you all.

had same problem, changed this part and it's perfect now..

Can some one please tell me why my 2007 ford taurus surges at red light almost dies an some times it does die. Changed the throttle sensor an cleaned throttle body ..postion sensor changed maf sensor plugs an wires all brand new when it goes it really goes ..but when u stop it doesnt want to an it comes very close to dying ??? HELP ME!!!!

So the surging you get is like very high idle as if the gad is pressed and you feel like you will hit someone from behind? And if in neutral it just surges. Does this happen only in the summer heat? Does the rain affect this problem? The usual trio if these are the symptoms. Are Aic and has to be factory mopar, Maf (u already changed this) and a vacuum leak (even a small one will be enough).

So the surging you get is like very high idle as if the gas is pressed and you feel like you will hit someone from behind? And if in neutral it just surges. Does this happen only in the summer heat? Does the rain affect this problem? The usual trio if these are the symptoms. Are Aic and has to be factory mopar, Maf (u already changed this) and a vacuum leak (even a small one will be enough). Other possibilities fuel filter or pcv clogged.

My mom's 2002 Taurus has a similar problem it shakes very badly at idle and dies. It can drive a high speeds but a gas odor fills the inside of the car. The mechanic looked at it and said it's not a vacuum leak. She is hesitant to have him diagnose it because the last time he did work it turned into a $1300 bill. Please help if you can.

my older daughter bought a used 02 tauras and it needs spark plugs and was told other wires for it she bought the spark plugs but also plat plugs are those the right ones

I have the same issue it turns out it is the Transmission Range sensor. Mine eventually through a code P0705, It has to be really bad before you get the code. Also, do you get a blinking Transaxle light, the sprocket looking, orange, light on the right side of the instrument panel. This was another issue fixed by the TRS.

Thanks for your help but we actually just sold the car because we didn't have time to deal with it.

I have 2006 Vulcan that had erratic idle, popping in intake, was burning bank2 plug electrodes off, headlights varying brightness at idle, gas pedal feeling "stiff" and runability issues. 2 trips to Ford. Changed IAC, coil, plugs, different gaps, checked for vacuum leaks, cleaned MAF, unplugged sensors all over. My solution: unplug your alternator. Yup all my problems disappeared and lower smooth idle. No other issues remained.

My 2005 Taurus, bought from a dealer..."We dont chase down check engine lights" but car ran great. Started to have bad squeal, especially when raining. Changed the idle pulley. Squeal gone, sometimes a faint chirp when first starting it though. They did replace the Idle control valve because it was stalling on me. When AC fuse blows, it runs HORRIBLY. So, I just don't turn on the AC... yuck. AC fuse (10amp) blows randomly. Spotted exposed wires against the alternator that leads to the AC compressor. Suspect it's shorting out there. Today, take car to car wash. Left running while washing it. Left car wash, got to red light...it died. Would not re-start. Someone pushed me off the road. 15 mins before it would start and stay running... in mean time, sputtering bad, or would start, idle high (2,000) then drop down and stall out. When finally stayed running... would make odd noises, funky odor like burning almost? Afraid to drive it now.. and it keeps raining around here...GRRRR... And yeah, check engine light been on all this time. Dealer gave me warranty for 12,000 miles, but they won't do anything about the CEL.

Yes that is correct. The valves are burnt. You can buy the valves at any part store. Mine idled high but ran like a champ on the highway. Mine backfired and then we found out that the valves were burnt bad. Replaced the valves and now runs much better. It does take about 2 hours to replace the valves for there are ones in the rear that are hard to get to.

i own a 1997 mercury sable 24V dohc ,, my ALT is down below the engine block on the passenger side ,, when i went thru a puddle of water when it raining,, the alt started squealing there was sheild was missing i think ,, the squeal does go way,, the alt got wet,, over the years when i shut off my car it made bearing noise finally went out, iam also i have a miss at idle after my warms up ,at a certin spot when theres a miss then when in drive and car go a little faster in the car the miss goes away,, iam going to try a new TBS cencor the car has plently of power on the highway ,, no back firing, no check engine light,, i did replaced my IAC and MAF,, there was codes before ,, and the car has low idle after the car is warmed up ,,, i had my car tuned up at 99,500 in miles because of a miss that was 2003,, now 2021 the car only has 131,580 now has a miss again ,,in 2003 firestone did the tune up put bosch spark plugs and napa brand spark plug wires i forgot in 2001 a shop changed the coil pack it went bad ,, they put in a used low millage motorcraft coil pack , mabe its going bad

hope my car doesnt have a burnt valve