Lexus RX 2004-09 :: 2008 RX350 - Check Engine Light For Random Misfire On Cylinders 4 / 5 And 6

I have a 2008 RX350 with 68k on the clock. Received a check engine light for random misfire (P0300) and misfire on Cylinder 4 (P0304), Cylinder ,5 (P0305) ,Cylinder 6 (P0306). Question is what will be causing this to happen. I thought about changing the spark plugs to see if this is possibly the cause. but what else should i be checking?

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Ford Ranger / B-Series :: 2000 - Check Engine Light / Misfire On Cylinder 5

OK, got a check engine light today when I fired up the Ranger. Like I posted previously it is running kind of rough so guess I know why now.

Took it down and got the codes read it have a miss fire on cylinder 5. Picked up some plugs and wires, got to get those E3's out of there, but kind of think that's really not going to fix the problem. So that probably leaves the coil pack or injectors.

So what's the consensus on the best coils to use? Also, being an 18 wheeler for more years than I care to remember, I've learned swapping just 1 injector is never the way to go. So whats the best type of injectors to get and where the best place to get them should it come to that?

Oh, it's a 2000 3.0L Flex fuel 5 speed.

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Prius (Gen 1) :: 2001 Check Engine Codes - Misfire In Cylinders 1 / 2 And 3

Toyota read the codes wrong and told me that I need a new hybrid battery. That is incorrect info. Codes P0300 P0301 P0302P0303. The codes mean misfire in cylinders 1 , 2 and 3. I have had injector cleaned in the past new spark plugs. If I drive it it gets warmed up and shuts down. It will restart and run maybe 7 more miles the same. The brake light comes on and I have to restart it.

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Impreza :: 2000 2.5RS Misfire - Check Engine Light Came On Again And Started Flashing

I've got a problem with a 2000 Impreza 2.5RS 5spd. It started with the check engine light coming on. A trip to Auto zone revealed that the O2 sensor was the problem. But on the way home, the light came on again and started flashing. All the while the car started acting like it had a misfire. It idles really rough and the exhaust smells like it's running really rich. I've replaced the plugs and wires, and all corners of the ignition coil check out properly as well. Can the O2 sensor cause a misfire in one or more of the cylinders? Or is something else that I should be interrogating as the cause?

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Tacoma :: 2000 V6 Check Engine Light Code P300 / P306 - Cylinder 3 And 6 Misfire

2000 Tacoma v6 has has always ran good, but has check engine light code P300 & P306. cly 3 & cly 6 missfire, lean bank 1. Vacuum test showed no problems.

I've changed plugs & wires, switched coils around cleaned mass air flow sensor, checked timing. Ran Seafoam through intake, and gas tank. Check engine light went out for about three miles, then came back on. What else can I do to keep that blinking check engine light off?

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Ford Excursion :: 2001 V10 Not Running On All Cylinders / Check Engine Light Is Not Coming On

Bought a fixer upper 2001 v10 and it's definitely not running on all cylinders. Also the check engine light is not on and the PCM is not saying it's on (per my code reader) and it doesn't come on when I turn the key on.

Is it possible the previous owner had a programmer of some sort to disable the CEL? If the bulb were removed my scan tool would still show it on. Trying to get it to tell me which cylinders I am having trouble with.

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Ford - Taurus :: 1996 - Sputter When Stop At Red Light - Check Engine Light Start Blinking

I changed my plugs a few days ago on my 96' Taurus GL 3.0LI checked under my hood to check the recommended gap size and it said .42 to .46.. I went with .46. after putting them in i started the car up just fine, but later in the day i noticed when I came to a stop at a red light my car would sputter and my check engine light would start blinking. When I'd accelerate and drive it again everything would clear up and the light would stop blinking. I didn't change the wires, just the plugs in case you were wondering but I am unsure of how much that would influence my problem. Today after work i had a little trouble starting my car. After a few tries it started and my exhaust smelt rich in gasoline. Did i gap them too much? Should i get new plugs again and regap them? should i buy new wires also?Is my ignition coil going bad?

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Taurus :: 2011 Ford - Check Engine Light On But Car Runs Fine

The check engine light came on again after coming on about a week ago and then shutting of by itself. Everything seems to run normal with the car so I don't know if I should ignore the light and just keep driving or what. What would you do? My car is a 2011 Ford Taurus.

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Ford - Taurus :: Check Engine Light Flashes When Start The Car And It Idles

I have a 2001 ford taurus. just changed the engine with a used engine has 130k, did tuneup changing all spark plugs, wires and distributor cap. Also changed the 02 sensor upstream. And the check engine light remains on. if i start the car and it idles the check engine light flashes. but once i drive it, it just remains on. brought to the mechanic and he put on the machine and it reads that the problem is the 02 sensor upstream and the spark plugs misfiring. my mechanic is lost not sure what the problem is. someone told me it could be the manifold gaskets and pedlum gasket.

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Ford :: 2004 Taurus - Check Engine Light On After Torque Converter Replaced

This car has been giving me quite a bit of trouble lately. 04 Ford Taurus SES, about 97,000 miles on it. Just last weekend, it broke down on the highway. Found out the torque converter failed and needed to be replaced. I was suspecting that something was wrong with the transmission for a while now, because it would stutter sometimes when accelerating, and sometimes start shaking in the front when I turned it on. (It still stutters after having the torque converter replaced.)

Well now, a day after shelling out quite a bit of money to the dealer for this torque converter, the check engine light is on. I went to Autozone to check the codes, and they found P0300, P0305 (cylinder misfire) and P0316 ("crank sensor condition"). Is it possible the transmission is failing?? I found a bunch of complaints online about the transmission failing on the 04 Taurus. I'm trying to avoid more expensive repairs, but I don't want the car to break down on me again....

Also, a couple months ago, the check engine light went on a few times, but always went off within a day or two. Never did get it checked out because it didn't stay on long enough.

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Ford - Taurus :: 1998 - Check Engine Light Is On And Code Reads P0411

98 Taurus, 6cyl, 3.0L OHV, 184K miles. Check engine light is on and code reads "P0411 - secondary air injection system - incorrect flow". This is my son's hand me down car and has a rather large exhaust leak that I plan on fixing. Could this code be related ?? I found out that the CEL has been on for quite sometime now and the car is due for emissions testing (state inspection) in October.

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Ford - Taurus :: Check Engine Light Keep Flashing - Code PO302 Cylinder 2 Misfiring

I have a 1996 ford taurus lx v6 3.0 dohm..my check engine light flashing. then it stop flashing..i did replace spark plug,wires,coil pack..when it start to flash i put it gear the car start to shake and sputter.i really don't know why its doing that the car has about 150000 miles on it..i do get a code p0302 Cylinder #2 Misfire..the new plugs and wires and coil pack is about 2 weeks old..

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Taurus :: 2002 SES Check Engine Light On And Code P1451

Check engine light on and code is P1451. I have been told its one or all four things:

1. Gas cap,
2. Evap Canister vent solenoid,
3. Evap purge solenoid,
4. Evap canister.

I am trying to fix this problem on the Taurus. I have changed the Gas cap and this did not solve the problem. The other three things on the list: Are these three separate things? Or are they part of the same thing?

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Ford Excursion :: Check Engine Light And Cylinder 5 Misfire

So when I bought the car, it had a check engine light. I had it checked it said cylinder 5 misfire. I assumed it was the glow plug so I bought it and replaced the glow plugs myself. Check engine light went away for about a day then came back on. Got it checked again and still said cylinder 5 misfire. This is my first diesel and I'm clueless as to what's wrong.

2001 7.3 Limited with 232k miles Bergen County NJ.

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Ford - Ranger :: 1998 - Check Engine Light Came On / Misfire Monitor Malfunction

I have a '98 For Ranger. After 256,000 miles, I recently had a new (rebuilt) motor put in my truck. After about 2 days of driving with the new engine, the Check Engine light came on. I went to Auto Zone and had the codes checked, and these two codes came up:

"Misfire monitor malfunction"

"Oxygen circuit slow response bank 2 sensor 1"

The guy at Auto Zone couldn't tell me what they meant. Is this something serious that needs to be checked out immediately or have anything to do with the new motor that was put in?

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Ford F-150 - 1997-2003 :: Misfire Error Codes And Check Engine Light

So I have been having some troubles with my 2003 F150 4.6L ... Truck has been running rough and the check engine light was on so I decided to get the codes read and I got back P0302 and P0304, which from what I understand is a misfire on cylinders 3 & 4. At the same time I got Ford to do a little diagnostic and this is what they wrote for me:

"The connector for the number 2 coil is broken and will not stay plugged on to the coil and the number 2 coil is not working / replaced the wire for the coil still running rough removed the coil and plug. the plug was very badly fuel soaked started the vehicle to see if there was spark at the plug. OK. Suspect either a injector issue or a compression issue cleaned the plug seems better. "

So of course they quoted me for the works. They say I should replace the coils, plugs, and injectors??? I am pretty mechanically inclined and think I could change these things myself since I am on a budget. One tech told me is that the plugs can seize in these engines often and could scrap the whole thing??? Seems a little weird. If that happens though what could I do?

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Ford - Explorer :: 1999 - Check Engine Light Keeps Coming On / Misfire Code

I have a 99 Ford Explorer - w/217k miles. (2nd owner) .. I got an oil change 3 weeks ago, tune up 2 mos ago, and new brakes/tires within the last 6 mos, oh, and Brother-In-Law just recharged my a/c last week.

Runs well, and I hope to keep it for another few years, but having problem lately.

Check Engine light keeps coming on - I've taken it in, and they read the code, and it comes up with a misfire. Mechanic resets it, and it will stay off for a few days/weeks, and then comes back on.

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Ford F-150 (2004-2008) :: 2005 - Check Engine Light Came On - Cylinder 5 Misfire

I have a 2005 f150 with 96,000 miles. Long story short, last August I was headed to the mountains going up a steep long hill and the engine light come on. once i was over the pass the light went off. During my 4 wheelin' trip it never came back on until I was headed home and going over another pass and then it stayed on for a couple of days. I had it checked and it was a cylinder 5 misfire. I did some research and found that replacing the coil cover might fix the problem and if not the spark plugs would need to be changed.

I changed the coil cover, problems solved... until I headed to the mountains. light came on and then eventually went off later that day. I didnt think much of it. then a few months later i was headed to the mountains again and the light came on in the same place on the steep incline hill. I. took it back to the shop, same reading. I decided it was time to replace the spark plugs anyways so I would invest. I have new plugs and everything is good however, I had no plans to go to the mountains in the near future. Now, a few months later I headed to the mountains and crossed my fingers it would not come on but it did.

I've done the research again and it seemed like the coil cover and spark plugs are usually the cause of the problem...however I have changed mine. The light is now off again. I don't understand what is triggering the problem and what is really happening and if it is safe to keep taking to the mountains with this happening. I did notice that everything was fine at 60MPH but once i hit the hill and steeped on the gas to go 65 and hit 4-5RMP that is when the check engine light came on...

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Ford - Windstar :: 2001 Misfire Occurring - Blinking Check Engine Light While Trying To Accelerate

I have a 2001 Ford Windstar Sports SE with 155K miles. I did a tune-up eight months ago. With the tune up I had to replace the fuel pump because it was defective. Later, I found that there were misfires occurring since I was getting slow acceleration. I had the spark plugs on the guilty cylinders replaced again and the spark plug wires.

Periodically, I have had to return to the shop to have the vehicle checked. I sometimes get a blinking check engine light while trying to accelerate, which now occurs only while it is raining or I am exiting the car wash. The shop is at a loss as to what it is (spark plugs and wires are fine, no lose connections noticed). I am wondering if I should take it to someone else. Of course, taking it somewhere else will cost me $100 to check on someone's else work.

The shop replaced the ignition coil. Distributor cap is fine. They keep saying that the engine is running fine while in the shop and do not get any codes. I had them drive it while it was raining and they discovered that cylinder 4 is misfiring. They worked on the cylinder. The vehicle runs well, until it rains or I wash it.

My questions to the group, "If everything is OK, how come it is misfiring? What are they missing? What is the connection to the moisture?"

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