Yaris/Scion & Vitz :: Misfire On Cylinders - Codes P0301 And P0304
Jul 6, 2014
I recently had detected always misfire on those cylinders. Any relation between them?
View 1 Replies
Jul 6, 2014
Advertisement
Elantra XD (2001-06) :: Misfire - Consistently Getting Codes P0301 And P0304
I would like to find out why my car is misfiring before throwing parts at it. I have a basic level of mechanics and have checked a few things before posting here, which may or may not have ruled out some possibilities.
The problem: I have been consistently getting P0301 and P0304 but only happens sometimes, while other times there is no check engine light. I first checked the ignition coil, right side of it, that controls cylinders 1 and 4. Did resistance test, measured for voltage, and checked the wires for continuity to the connector, with everything coming out good. I know a few must have had issues with the cheap pigtail connector like me so I went and changed that but still got the misfire codes. I then put in an older known to be good working coil but no change.
After that, I removed spark plugs 1 and 4 and put them where 2 and 3 go but still got the same codes P0301 and P0304.
A friend who is a mechanic for Nissan checked the spark and wires, saying they were fine. He then checked the injectors and noticed that injector 1 didn't increase in ticking sound when RPM increased. He said I should replace injectors 1 and 4 to see if that changes anything or switch injectors 1 and 4 with 2 and 3 to see if the codes at least change. I removed them all, got two of them from junkyard just in case, made my own tool where I pumped straight fuel injector cleaner through each of them with pumped air, and put the two from junkyard on cylinders 1 and 4. I still got the same codes so then I switched injectors 1 and 4 with 2 and 3, which didn't change the codes.
I was told by another local mechanic shop that it's definitely the coil but I knew it wasn't.
Other info: I am not sure it would matter when dealing with a misfire but I borrowed a code scanner and saw that the Long Term Fuel Trim was -7%. I researched that and it means that the car is running rich and the computer is being told that it needs to run lean. I am not sure that this would make only two of the cylinders misfire and the freeze data shows that same negative LTFT for when the P0301 happened. I also know that there is an air leak at the gasket where the front cat connects to the flex pipe/rear cat. I have also gotten a rear downstream 02 sensor code once within the past month but it hasn't come back.
Would the LTFT being lean have anything to do with the misfires? Would the gasket between the two cats cause the 02 sensor to get a faulty reading? If so, would the downstream 02 sensor be able to adjust to a lean fuel mix? What else should I check?
Yaris/Scion & Vitz :: Code P0301 Came Up - Water / Coolant In Number 1 Spark Plug Well
2004 echo, 109,000 km. P0301 came up and upon investigation I discovered that my no.1 spark plug well was filled with what I believe to be coolant. The top of the valve cover (where the coil packs are seated) was bone dry. The oil, from what I can see on the dip stick looks ok - I intend to replace to investigate further. Coolant is low. Spark plug wells for cylinders 2 - 4 are ok.
View 8 RepliesYaris/Scion & Vitz :: 2000 Echo Started Missing - Code Check Came Back With P1315 / P0141 And P0304
The other day my 2000 Echo started missing, she would run fine until after about 5 mins. After that, it would run like it was only running on two or 3 cylinders so I took her to Auto Zone for a code check--it came back with p1315,p0141 & p0304. On the way home it really got bad! She started dying on me. Just like u turned the key off. Before coming to a complete rest I turned the key all the way off and back on and she ran for 30 seconds or so - You would have to turn her all the way off--back 2 clicks--one click back would not work and this is the way I got her back home--about 7 miles turning her on and off. I wish now I had not hooked her up to there code checker because I think it burnt something out.
View 6 RepliesYaris/Scion & Vitz :: 2002 Echo Misfire That Goes Away During Idle
Mother in laws car had a bad misfire that goes away during idle. It seems to misfire during take off or slowing to a stop and Intermittently during cruise.
Came in with codes p0300 - random misfire and p0304 misfire cylinder 4
What I have done so far.
-Checked the oil
-Checked the plugs - they were bad so replaced them with ngk plugs
-part number - BKR5EGP
Misfire was showing in cylinder 4 on live data still
-Swapped coil 4 and 1
-Misfire moved to cylinder 1
-Swapped cylinder 1 with 3 to be extra sure and mis stayed on 1
-Swapped back to 4 and even 2 mis stayed in 1. Weird
-Pulled all plugs and checked compression getting 170psi
-Swapped plugs around in case 1 is faulty no luck
-Swapped number 1 and 2 injectors with no change.
So my thoughts now are leaning towards an ecm or a valve thing but would those not be on or off fails? It idles great and cruises great it's only bad we coming to and leaving stop.
Yaris/Scion & Vitz :: Misfire On Cylinder 3 - Car Hesitate In Reverse And Drive Only
Okay, the code I am getting is a "Misfire on Cylinder 3" code. The car hesitates in REVERSE and DRIVE only, not in neutral.
This is what I have already done: checked all wiring (fixed a bare wire), did an ignition coil swap (#3 to #2) to see if it was actually the coil (no change), replaced all the spark plugs (no change), replaced the MAF sensor (no change).
A shop I tok it to said it was the ignition coil, and that all the spark plugs needed to be replaced. They did not know that I already replaced all the plugs and, having already done the swap with another coil (and getting no change), I find it hard to believe anything they say.
I am leaning toward an O2 sensor issue or a fuel filter issue (but these cars are supposed to have lifetime fuel filters and that is not a job I ant to do if I don't have to).
I was also told that the "green thing" in this photo might be bad. What that is and/or why it would be bad. it does move a little, but so do all the others.
Yaris/Scion & Vitz :: 2002 Echo Misfire And Lose Power When Accelerating
Driving on friday night, started to hear at idle the car rpms wavering. Drove home fine with no issues other than at idle. Then Sunday, drove the vehicle, and sometimes had issues when accelerating, seemed to misfire and lose power. Then when driving that day it died completely and wouldn't start. It turns, but no firing.
Got it towed to my place, ran the codes, showed 1300, 1305, 1310, and 1315. All to do with ignition coils. Did a quick spark check, and no spark at any cylinders. I figured it would be weird that all 4 would go at the same time, so i replaced the ECM instead. Still no spark. Where to go next? Also the car does have an immobilizer in it...that could be causing it to malfunction?
Yaris/Scion & Vitz :: EVAP Engine Codes P0446 / P0440 And P0441
I have a 2002 Echo with 185K miles on it and i have a 2003 Echo with 101K miles on it, Both have P0446 P0440 P0441 codes coming up on them, the 2002 I replaced the gas cap, VSV valve and the rubber hoses from the throttlebody to the hard plastic line in the engine bay, and the 2003 I only replaced the rubber lines in the engine bay.
View 14 RepliesYaris/Scion & Vitz :: 2005 Echo Misfire Intermittently - Cannot Drive Out Of Driveway Without A Sputter
2005 Echo auto 120,000 km
I have intermittent misfiring (a few seconds every couple minutes) and get the codes 301 and sometimes 304/300. I cant drive out of my driveway without a sputter and when I turn into a parking spot or make a quick stop the problem is magnified. I initially suspected a wiring / coil issue but here are my results:
Shuffled coil packs. (1/2 & 3/4)
Shuffled fuel injectors.
Good compression.
Swapped ECM.
Inspected wiring harness.
Goof EFI / cutoff relays.
None of these led to any change in the codes (300, 301, 304)
Yesterday I swapped the fuel pump and it worked flawlessly for an hour of city driving (first time in two months) ... then the issue returned as before.
Yaris/Scion & Vitz :: 2003 Echo Throwing A Cylinder Misfire Code / Idle Rough
My friend has a 2003 Toyota Echo that is throwing a cylinder misfire code. Original code is P0302 and P0302PD. The car is idling rougher, kind of sounds like "put-put-put". Also, the car has no power at all. He lives on a hill and he can't even pull out of his driveway. Lastly, the smell of the exhaust is gassy.
We have changed out the spark plugs...no change. Next, we bought a new ignition coil for the number two cylinder...no change. So, maybe its the wiring. Put the new coil onto the number 3 cylinder and the number 3 coil onto the 2 cylinder. Low and behold, the misfire code changes to P0303 and P0303PD.
Thinking we might have gotten a dud of a coil, we bought another. Same thing...new coil on 2 code is P0302...new coil on 3, code is P0303. Could we just have gotten two bad coils? Oh, coils were a BWD brand coil and Duralast brand. Should we just go OEM from dealer? OR Denso from Advance Auto?
Yaris/Scion & Vitz :: P0300 Random Cylinder Misfire - Check Engine Light Randomly Comes And Goes
The check engine light keeps coming on and off on my 2001 Echo with the above code. The car runs fine and the check engine light randomly comes and goes. What would set off the check engine light, but not cause noticeable change in performance?
View 2 RepliesYaris/Scion & Vitz :: Car Spudders When Accelerate?
When ever my car is parked on a slope for 5 min I go to drive it and the car spudders when I accelerate.. when i leave it on flat ground after its perfect again.
View 5 RepliesYaris/Scion & Vitz :: 2003 - Echo Won't Start
My wife's 2003 Echo is sitting at 255 000 KM's (Canada) and has hardly had a days problem.However yesterday tried starting and completely dead-not battery as almost new. Ignition makes clicking noise-lights/radio etc all working.Called the BCAA ( Vancouver) the guy tapped with a pole on something in the engine and voila she started. He said something about the starter or starter solenoid-today again the car is dead. Will take it to the mechanic on Monday but how do I get it started meanwhile ? what did the BCAA guy do and what did he tap on ?
View 2 RepliesYaris/Scion & Vitz :: Side Trim On Echo?
Was looking at some new side skirts for my 4d 2000 toyota echo but mine currently has the black plastic trim going completely around it. Are these easily removed? Like, are they clipped on?
View 3 RepliesYaris/Scion & Vitz :: Can't Remove Tail Light
I'm trying to remove the tail light units from my 2002 Toyota Yaris.
I've removed the central nut from the inside but the light unit won't budge. There are two other protuberances coming through the metal body work which are a plastic spigot, lower left of the metal bolt, and rubber type insert further away to the upper right.
I'm also presuming that there is some stiction with the gasket.
Even with the nut removed the outside of the unit has zero movement while the inside has a slight amount of flex.
Am I missing something?
Yaris/Scion & Vitz :: Torque Value For 2009 Oil Pan Bolts?
know the torque value for a 2009 yaris oil pan bolts? In another forum somebody quoted a value of 6.6 foot pounds, that seems too small and the wrong value to me.
View 3 RepliesYaris/Scion & Vitz :: Toyota Echo Blowing Hot Air When AC Is On
Just bought little Echo and it's blowing hot air when the ac is on if I turn the ac off with the selector in the blue it's still hot. I used the gauge off a old ac recharger can and its showing the right amount of Freon and the compressor clutch is spinning. I am really wanting to fix it cheap , since I got it for 1200.
View 2 RepliesYaris/Scion & Vitz :: Squeak When Pull Shifter Down From 1st To 2nd And 3rd To 4th
My car squeaks when I pull the shifter down from 1st to 2nd and 3rd to 4th. What is causing that?
View 1 RepliesYaris/Scion & Vitz :: How To Disable DRL Without Loosing Fog Lights
I am trying to find out how to disable the DRL on my 2008 yaris RS without loosing my fog lights, and if it could be possible to get the fog lights on when using the day lights.
View 1 RepliesYaris/Scion & Vitz :: Tick For A While That Goes With Engine Revs
Back in September '12, I was on the freeway and merging quickly into the fastlane/passing lane on the freeway-- third gear, near 80mph. Going for fourth gear was a brief misshift into second that apparently happens often with cars with the 1NZ-FE.
Because of that over-rev, I've since had an annoying tick that goes with the engine revs. It's been going strong regardless for over 10,000 miles, but it's frustrating nonetheless. Compression seems fine on all cylinders, and according to a shop I'm not primed to believe, the shims for the valves are fine and these engines "always sound like that." My video begs to differ.
For those who've maybe had the same sound, what's your take? I've heard of stretched timing chains/chain slack, water pump, clutch issues, etc., but want to narrow it down.
You get the contrast here, and toward the end I nearly over-lap the shots to hear them closer together. [URL] ....
Under the hood/car. [URL] ....
Yaris/Scion & Vitz :: Check Engine Lit Up When Switching From 4th To 5th
I've got error P0440 on my 2001 Echo about a week ago and cleared it, then I got it again today. It happened while driving, I was switching from 4th to 5th and the check engine lit up.
View 3 Replies