Dodge - Intrepid :: 2004 - Code Keeps Coming Up P300 Random Misfire
Apr 8, 2011
The "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 Replies
Advertisement
Just started getting a p0300 random misfire code on the durango a couple days ago. pretty sure it isn't moisture related since it started on a nice sunny day. it was running pretty rough so it was obvious that it was misfiring. I changed the plugs since it was about time anyway, and they needed it and I cleared the codes. new plugs (put in the oem champion copper plugs) didn't make the problem go away. The engine still ran rough and the code came back. 2 of the plugs looked like they may have been fouling a little bit. they were a fair bit blacker than the rest of the plugs. I went ahead and changed the coils on those two cylinders and reset the codes again. Still runs rough and the p0300 came back. where do I go from here? I am not getting any specific cylinder codes so it makes sense to me that it isn't one or two cylinders not getting spark. 2003 durango 4.7 ....
View 6 Replies
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?
View 1 Replies
2004 GMC Sierra 2500 HD, 227,000 miles 6.0L V8.
While driving up hills or increasing load, the CEL will flash multiple times, I pull over as I know CEL flashing is not good. I turn the truck off, allow it to sit for a few minutes, whip out the code scanner, only code that was there happens to be P0300. Truck has poor MPGS, idles rough, loss of power. this happens every time I drive this vehicle as I use this truck to pull my trailer that weighs around 4000 lbs. Problems come and go. Some days I can drive the truck for an hour with no problems, come up to a red-light, BAM, CEL is flashing, truck is bouncing side to side due to the poor idle, other days this happens while sitting in the parking lot of my job with the ac on.
Truck has been to the shop several times as I'm no mechanic. Parts replaced are as follows:
- Fuel pump
- Throttle Body
- All plugs
- All wires-All Coils
- Intake Manifold Gasket-
- Battery
- Sensor 1 Bank 1 O2 Sensor
- Sensor 1 Bank 2 O2 sensor
View 9 Replies
I have a 2004 Hyundai Santa Fe 3.5L V6 when i was driving a couple of days ago the check engine light flashed and after a while it stayed on the codes are P0300 which is a random misfire as well as a misfire in cylinder 2, 4 and 6
I replaced all 6 spark plugs and the 3 spark plug wires still the same issue. The car hesitates when accelerating when i accelerate it looks like it wants to stop the rpm goes to almost zero and then it moves and so on. the rpm goes up and down like crazy.
Sometimes it won't move past 1000 rpm I'm moving 60mph and still on 1000rpm and sometimes it works just fine like there is no issue at all. When idle the car is fine and everything seems normal it stays on 900rpm. The car has 158K miles on it.
I uploaded a video to show you what's happening to the tachometer when I accelerate [URL] ....
I'm on a limited budget I'm thinking of changing the ignition coils but i want to make sure that's what is causing the problem first because i spent 200$ to change spark plugs and wires and the mechanic didn't fix the issue.
View 13 Replies
Friend has a 2006 with the 4.6 motor. From time to time he gets a random misfire code ( I think its 0316).. He claims it will only do it when the gas tank is less that half full. I don't see any correlation between fuel level and the code. I am going to check fuel trim values, etc, when the code is set, this weekend.... all I can assume is low fuel pressure which sets the code... Any problem with the pressure module or fuel pump / discharge hose that is related to low level in the tank ?
View 3 Replies
I recieved a smog check and I fail one small problem. but what do this code stands for PO441?
View 1 Replies
I have a 2004 Jetta 1.8t 6speed, I recently bought it from a person(my first VW ever) so just trying to fix some things on it, One thing that I'm stuck at is My CEL, it keeps flashing the code P0501 and some random misfire on my cylinders, I have reset it and they keep coming back.
when I put about 10-15% throttle it revs up fine, no misfire or hesitation until the fuel gets cut off around 5500, which is 1k below factory red line, does not hit a thing like the rev limiter where it pegs off the top multiple times just fuel cuts off.
If i put anything above the said pressure the car then begins to misfire and lots of hesitation and that's what causes those codes to go off.
I've been reading many things pointing towards the engine speed sensor or the wiring. Occasionally my fuel/temp gauge quit working but I believe that is a separate issue all together.
So really trying to narrow down what is actually causing my engine to hesitate at low rpm.
Also i might note when I'm in neutral I can go wide open throttle and the car revs fine until the cutoff and only does the bog down when it's under full load. It sorta feels like the possible misfire is due to bad air/fuel but really do not know.
View 7 Replies
Have an 06 F150 5.4 3v with no power. spark knock. rough idle. wants to die while driving, and random misfire code. Have replaced fuel pump, filter, coils and plugs. What to check next? Already thought of EGR - it doesn't have one.
View 4 Replies
Have '01 SE. yesterday I got a misfire in cylinder 4 (code P0304) the service light blinked on and off 3 to 4 times than stayed solid. changed plugs and boots about 1 to 2 months ago, didn't change coils and they r not in the best shape but didn't have money to replace at time. So I replaced the coil for #4 and it still runs rough with code, plug has some ware but looks fine.
View 1 Replies
I have a 2000 Dodge Intrepid with 92000 miles. Several times a day I get a vibration or shaking coming from the right side front tire. It comes and goes. It only happens between say 30 and 50 miles an hour. It stops whenever you hit the gas or turn the wheel to the right. Seems to start mostly after hitting a bump or rough road.
View 2 Replies
I have 2004 Dodge Intrepid 3.5L with 153K miles. For the past tow months I am getting oil in the radiator but NO antifreeze in the oil. Oil level gets low but the transmission fluid is fine. No coolant smoke, No Oil smoke, Have been draining coolant, Passed emission 3-months ago, Gas mileage is fine @ 23MPG. I have to add about quart a month (1000?-miles). I have been using Mobile-1 synthetic since bought the car at 108K. Currently 153K miles on the engine. Two years ago water pump and timing belt was replaced. If it is the head gasket then why oil is fine and no coolant in the oil. It is Not transmission Fluid either.
View 7 Replies
I have a 1997 Dodge Neon with about 153,XXX miles on it. My check engine light has been on and i know that is caused by a random misfire. But more recently i went to start my car and it started but ran for less then 10 seconds and died. I tried to start it again and it wanted to but wouldnt make the final step i guess. We checked my spark plugs and i had oil sitting in 3 of the 4 there are. We have tried starting it again after cleaning the oil out and it started on the first try, I am just afraid of messing anything else up so until we figure out why it did this to begin with the vehicle is off limits. My Fiance said we need to replace the spark plugs and a gasket.
View 4 Replies
So 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 Replies
When i went out to start my car it would start but then start shaking really bad when i would it the gas it would stall what might this be? i checked the oil and it is very low could this be the problem? 2004 dodge intrepid ....
View 2 Replies
2004 Dodge Intrepid. 70000 miles. Shimmy in steering wheel. Seems to come and go at about 7 second intervals. Suspension, tires, balance, alignment all check OK. One mechanic suggested steering rack valve problem. Could the computer possibly have anything to do with the 7 second interval?
View 16 Replies
My 2004 Intrepid with 100,100 miles runs and starts fine until a temperature change occurs. When that happens, and first starting, the engine will rev up and the check engine light will come. I don't drive it for awhile and then it starts and runs fine, but the check engine light is still on. I've changed various sensors, and the throttle body assembly. Still not fixed. What could be causing this? It has a 2.7 engine.
View 3 Replies
We inherited a 2004 Dodge Intrepid SE 2.7L V6 with about 110K mileage. Basic problem: sometimes on startup the car runs terribly. It's like a cartoon car--it wheezes, bucks, snorts, revs up, drops back down again, etc., and cannot be driven. You know as soon as you turn the key whether or not it will run correctly. Sometimes when you turn the key, it starts up fine and runs fine. We've taken it to two different repair shops--our local guy and the dealership-- several times, and $1,700 later, it still happens. These are the repairs they have done: replace the map sensor, replace the camshaft position sensor, replace the crankshaft position sensor, replace the powertrain control module, replace the throttle position censor and, finally, replace the pigtail for the map sensor.
The codes usually indicate a problem with the map sensor. As a matter of fact, the last time we took it in while it was running terribly, our mechanic unplugged the map sensor while it was running and the engine ran smoothly while it was unplugged. This is what caused him to put in a new pigtail for the sensor. Anyway, after that last repair, a few uses later, the car acted up again. We've learned that if you let the car sit for a few minutes after a bad start up, it will often start up fine the next time you try. One note is that the problem has not occurred as often this summer as it did in the cooler months.
View 6 Replies
We have been fighting a misfire code for about a year now and I'm pretty sure I finally found the cause. Last Spring the car died on the road and we had it towed to a local service center where they said the fuel pump was bad...this was the 2nd in about 2 years (previous owners doc). We had it replaced and the car was fine but as mentioned had a random misfire code that would come and go. In the last month the car has left us stranded several times and then started after a few hours or a day. While checking the connection to the fuel pump with a meter and test light I verified the pump was getting power correctly to the 5-pin connector but would not start. I unplugged the connector and the 1st 2 pins in the harness connector were damaged and probably burnt.
I cleaned it and applied dialectic grease and plugged it back in turned on the key...fuel pump primed and then the car started and ran fine. It then started to randomly turn on and off but not enough to stall the car. I wiggled the connector and the it I could make it run or shut off. Obviously the connector is bad and the contacts are intermittent. While driving the vibrations would move it just enough to make it cut on and off and more than likely cause a misfire code and sometimes stall the car. My problem now is I can't find a replacement connector/pigtail for the harness connector anywhere including the dealer. Where can I get a new connector for the 5-pin fuel pump harness connector? I have found a MAF replacement connector that looks very similar but not 100% sure if it's the same.
View 1 Replies
I have a 2004 Dodge Intrepid. Here's the deal. When I drive on the highway (higher speeds) and then slow down, the car (automatic transmission) automatically downshifts drastically (like throw me through the windshield drastically) and then will not come out of that lower gear.. UNLESS I turn off the engine and restart it, THEN it fixes itself (took me a while to discover this). When I am driving around town at lower speeds this does not happen. Only if I get to higher speeds and then slow down. And one other symptom...SOMETIMES I can just be at a stop light/sign, still in drive, but when I put on the gas to go, it stays, like the car is in neutral, even though the gearshift is still in drive.
View 8 Replies
I have a p0300 code coming up on the comp. The motor runs fine until it gets wet. rain/carwash. I have tried to spray each coil with water and could not get it to misfire. Then I brought out the water hose and sprayed it top of the motor this found the misfire. This thing has 8 coils and I really don't want to replace them all. My Question is there some thing else that could be causing the misfires.
View 14 Replies
