I replaced my seven year old original battery on my 2008 Camry V6 SE. The car started ok, but the check engine came on and showed the P300 misc engine misfire. The car ran fine. The original battery failed the load test at the local auto parts store. I replaced the battery and the check engine light went out. I have noticed better engine performance and better transmission shifting too.
View 3 Replies2000 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?
The problem that causes the check engine light to come on cannot be traced. The diagnosis is multi engine misfire. The dealer has checked and recheckedbut problem still exists. The last time my mechanic changed spark plugs he noticed oil on one of the plugs he removed in the rear side of the engine. He replaced the plug with the rest of them. Could it be that one or more of the spark plugs are sucking oil and causes the misfire? If so what could be the cause of that. Do I need a full tuneup? My dealer recommends replacing the cam shaft pulley because it's loose and this may or may not solve the problem. I'm not a mechanic but it appears as if the problem has something to do with the spark plugs sucking oil since the check engine light might go ou for a week or so and then come back on for a while. Lastly is it dangerous to keep driving the car especially on long trips?
View 1 RepliesSo my 96 blazers cel started flashing and the truck started running extremely rough. I changed the catalytic converter and the o2 sensor that is in the pipe. Made no difference. So I knew my intake manifold gasket has a leak so I changed the gaskets and put knew bolts in. I wasn't thinking and took my distributor out and forgot to mark the timing. So played like heck getting it in timing again. Took a bit cause I didn't realize there was two timing marks. So got it started again was running really rough so thought 180 off turned it nothing. So put it back started it up still running very rough and flashing cel so put a new crank sensor and cam sensor in and a ignition coil in. No dif still. Could it be the egr or ECM?
View 12 RepliesThe "check engine" light on my 2004 Dodge Intrepid has been on (not blinking though) for months and, after putting new spark plugs, wires, ignition coils, 02 sensors, cam sensors and other things, the code that keeps coming up is P300 random misfire. After a few of the above items were put in (particularly the 02 sensors), the light would go off for a day or two but then always come back on. Because of this "random misfire", the car basically has no power when I push the accelerator down (at least until it warms up for a while and even then too sometimes).
View 1 RepliesToday the solid engine symbol showed up inside my tachometer (no workshop message in the instrument panel display). The owners manual says this is an exhaust system problem. What do you make of the following scan:
VCDS Version: Release 11.11.5
Data version: 20121222
Saturday,19,January,2013,12:32:00:22007
Chassis Type: 3D - VW Phaeton
I got 2006 vw passat 2.0, two weeks ago i replaced ignition coil pack on cylinder 3, and last Friday i replaced for second time same coil pack on cylinder 3, and today i got check engine, and it gives me a misfire on cylinder 3, it always giving me misfire on cylinder 3, the coil packs are all 4 new, i bought from a dealership, the other three coil packs does not give me a check engine, when i start the car, i feel little shaking, so what else i can do to fix this problem.
View 6 RepliesI'll try to break this down as best I can. I went to my mechanic this am with a check engine light. My suspicion is 02 sensors. This was confirmed as a problem area, but separate they said I had a spuratic misfire in cylinder 4. With that info, i pulled the plug to inspect (I had just installed new ngks in it and they have 18,000K on em.
I put beldon wires on about 8k ago.) plug looked to be normal, but there was definitely a puddle of oil from the valve cover leaking. Oil went into the cylinder head but I didn't really think that was an issue. Nothing abnormal jumped out at me so I reinstalled plug and checked all wire connections at both ends and called it a day.
Then I drove it. Check engine light flashing. Major performance stutters, etc. I drove it for about 20 miles and hoped it was just the oil raising hell in there and it would burn off eventually. It hasn't gone away yet. Maybe coil pack. Can the single portions of that pack be replaced, all i see them sell is the full three as a unit.
I just received a check engine light and the diagnostics from dealer were that a misfire was detected for cylinder 1 , 2 , 3 and 6 .
What needs to be changed? and mechanic said maybe the complete coil pack and wiring . Although, the code was reset and i haven't had the CEL come on prob in a week now , so i guess no other misfire has happened.
So, my check engine light has been on for months. I knew that I needed a new oxygen sensor (block 1-pre-cat), so I replaced it today after the car began to sputter and misfire. Well, I thought that would fix the problem, but it hasn't. Some of the hesitation is gone, but the sputtering is still very bad. I'm going to replace the spark plugs tomorrow and see if that works. I was also told to clean out the catalytic converter, but I don't know how to take it off. It wouldn't hurt to just bang out all the debris. Any DIY on taking off a catalytic converter for a 2000 VW Golf GTI 1.8T?
View 7 Replies2000 Chevy S10 pickup
Had the check engine light come on, and when I checked on the code it gave a 4th cylinder misfire. Autozone instructed me to simply replace my spark plug with a new oem plug.
I replaced the spark plug as instructed. After about an hour of driving, the check engine light goes off and I think, great! Problem solved. However, another hour of driving and the check engine light is back on again, without going away.
I headed back to autozone to get a readout, just to find that it's the same code. So I put another spark plug in. Same result - check engine light goes off after an hour, only to come back on again permanently after another hour.
Now, normally I would think, this must be the spark plug line that needs replacement,however I am sure there must be some clue in the fact that the check engine light turned off for an hour.
By the way, not sure if relevant, but I also found a lot of build up around the spark plug before I initially changed it.In fact, there was so much that I had to scrape around the plug with an awl, and blow out the crud with a compressor,just to get my socket into place without there being crud in the way.
Any clue what that check engine off/on clue might be?
Got the flashing check engine light and loss of power for few seconds and then the light stayed still, from time to time it blinks for few secs, usually when I push the gas pedal little bit more but it stays still, flashed only twice in 2 days for seconds. I connected computer (not VAG) and it says "Cylinder 4 misfire". I have app scheduled with my mechanic this Thursday, but still need to commute to work. Is it safe to drive?
View 7 RepliesCheck engine code (P0302). I have a 2007 GS 350 with 116k miles that was driving perfect until this week. My check engine light was initially blinking but is now on solid along with the check VSC light. My question is: of the 6 cylinders (3 on the left and 3 on the right when facing the engine) which one is cylinder 2?
View 7 RepliesI have a 2001 corolla with 37K mi on it. The check engine light came on today. Took it to advance auto parts to read the code. It showed P0171 (System too Lean) and P0300 (Random Misfire). Called up a toyota dealer and the technician think it might be bad gas. I buy gas at name brand gas stations and sometimes from BJs. I am not sure if the problem is with gas. I also been up to date with maintenance.
View 14 RepliesToyota 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.
View 9 RepliesI plugged in a OBD2 reader and its show misfire on Cylinder 1.
I haven't driven the car for 4 days, and when i started the engine this morning, the engine show knocking when the regular engine kicks in (rough). i will be bringing the car in tomorrow (dealer). my car is a 2011 with 16k miles, strange for this to happen so early in age.
As the title says I have plugged a code reader in and it says "cyclinder three misfire". So I pulled the plugs and good god they were nasty. Some having a gap of 80-90 thousandths of an inch. So I figured the plugs were the source of the problem, thus I replaced them but to my dimise the check engine light is still on, and still reading the same ol' "cyclinder three misfire". I have put 350 miles on it in 24 hours of changing it to allow for proper time of the circuit cycling for the light to change but not sure if it takes longer...?
I also went ahead and checked the plug wires resistance when I had the plugs pulled and they ranged from 1.5-2.5k ohms shortest to longest (cylinder 4-1). And if your curious the magic cylinder three was around 2k ohms for however long that wire is, my guess would be 18 inches. Would this be out of tolerance, I know the norm is 10k ohm for every 12 inches or so...?
My next guess would be replacing the power pack or I guess you car guys call it the "ignition coil"...? I will say that the car does run much smoother after replacing the plugs.
Honda Odyssey 2005 – 176000 miles. Cylinder 4th Misfire – check engine lightHonda has about 176000 miles. When cold – before warming up – it acts like nothing is wrong – as it gets warmer – to the middle of the temperature gauge – it misfires.And runs rough. Evaluation: Honda Dealership thinks it is a cracked Valve or needs adjustment – they have replaced a spark plug and swapped coils. Not for sure.They think if that is not the case then there could be additional problems.Question: Why does it act normal when cold ? How can we confirm if it is the valve and not cracked head?
View 15 RepliesI have a 2001 Honda CRV with about 140,000 miles. It is an upstate NY car, so has seen its share of salt and rough winter driving, has a little bit of rust.
I recently brought it in for repairs because it was overheating. It was over the holiday weekend and I had a job interview to get to so I brought it a chain, which was the only open mechanic I could find. They told me there was a coolant leak and replaced the radiator.
The next day, the check engine came on. Cylinder misfire code. I took it back to them and they wouldn't give me a straight answer on what was going on but insist they told me that would happen and it needed more repairs which I had apparently refused. They told me it's probably the spark plugs/wires are old but maybe there's more damage, but basically that they didn't want to deal with it.
So I brought the car to my regular guy. He says, yeah it needs a tune-up. So he replaces the spark plugs and wires etc and gives it back. I drove it for a day and the light came back on. So I brought it back to him again and he refused to do anything. Wouldn't give me some possible causes or explanations, just says come pick it up. Didn't say stop driving it, take it to a dealer, he just reset the check engine light and said its probably fine.
The next time I drove the car, while it was warming up the check engine light was flashing. By the time the engine was warm the light had stopped flashing and was on.
I have a 2000 VW Jetta 2.0l AEG engine with 190,000 miles and check engine code P0303 for the 2nd time in 3 months. I had this same code 3 months and 3000 miles ago and found the spark plug #3 to be fouled up. All other plugs and wires seemed to be okay so I replaced plug #3 and the problem went away. I suppose after I take off the upper intake manifold I am going to find the same plug #3 to be fouled up again. The engine is a typical AEG that I have to add 1 quart of oil every 1000 miles as it has been burning the same amount of oil since I acquired the car at 135,000 miles. I have read that the wrong piston rings were installed from the factory on a large number of these engines and VW says that if less than 1 quart of oil is burned after 7500 miles it is normal. I really don't feel like spending 2 hours every 3000 miles to replace plug #3 ? It might be time to part ways with my 2nd VW. As a side note, this car has been averaging 35.5 mpg over the last 55,000 miles that includes 50% city/ 50% highway driving. I coast to red lights and don't accelerate quickly with the 5 speed manual transmission to achieve hybrid like fuel efficiency.
View 1 RepliesChange out the penlum gasket and now the check engine light came back on and the codes are 301 and 302 miss fire on the bank 1 and 2. not sure what it is now. mechanic is lost...
View 14 Replies