I had the weirdest thing hapen today. As I'm driving home in the rain, The crossfire starts to sputter and acts like its running on 3cylinders with no power and the engine shaking. I proceed to the dealer and and check the engine code in the parking lot. I turn the vehicle off and then start it and the car runs normal again. Should I be worried that the dtc codes p-0300, p0303,p0304,p0305,p0300,p304 show a missfire in the cylinders associated with the code or could it be bad gas? I'm going to check plugs tomorrow and should lmk if there;s a problem with the mix. Any suggestions would be very appreciated? Should I go to the dealer as I have a aftermarket warranty? Could this be caused by someone spraying something into the exhaust pipe as there r some idiots living here? Scratching my head as the car was running great up until this point. The vehicle has 47000 miles and is a base crossfire with no mods except a sprint booster.

 

This has happened to me a bunch, when I was doing the dual throttle body testing. Its caused by the engine cutting the fuel back for some reason and is cleared by turning off and on again, as if it never happened. WOT operation causes it more frequently it seems, you angered the ECU some how. Woody

 

Mine cut back to 3 or 4 cylinders when the fuel pump began to fail.
No codes were found but it was a lack of fuel to the engine that caused it.

 

Thxs Woody and Valk. Would the fuel pump failing not throw a code and I'm assuming if not the dealer would just replace the pump and other parts? will drive vehicle tomorrow and see how she runs. One thing bothering me though is damage to engine with insufficient fuel for cumbustion. Should I be worried. Cheers Scott

 

IMO Nope. Woody

 

Same thing happened to me when the bottom of my OEM intake elbow disconnected from the throttle body, causing a small gap and the engine gasping for air. It was hard to see, so make sure to get in there and check it as well. No codes or anything and it freaked me out for a few days...

 

This happened to me also last year at the Dragon , after running the crap out of the curves , got home and checked the rail pressure and all was normal , but when it happened the car was starved for fuel ,I changed the fuel filter just for good measure , I have run the car several times very hard since and had no problems ,,,, Who Knows ?

 

look for hoses off first...do the easy things first. Don't panic. It isn't the plugs...don't waste your time there...fuel filter, long shot, fuel pump, maybe, but nothing wrong with putting a new filter on...bad gas is out there...good luck...

 

I wasn't having any cylinders misfire, but I did notice a bit of a sluggish nature to the SRT. So I decided to get under and change the fuel filter after 20k miles of ownership and 40k on the ODO. When I bought the car a few years ago the dealer said they changed all the filters, but I just don't have any proof, so I changed it anyways.

It definitely made the care feel better when driving. Though now I think it is about time to change the transmission fluid and hope the shifts get a little better. Between new fluid, blue top solenoids, and paddle shifters it should make for some fun shifting in the near future.

Hope you figure out what happened, do let us know what the final verdict was once all the dust has settled.

 

Intercooler leak ?
OK. no SRT6 ? Dont worry about the intercooler

 

Chrysler has the vehicle and couldn't find anything wrong as the vehicle runs great after. However there is a small gasket leak just under the oil cap but isn't likely to have caused a missfire. Keep everyone posted and thxs to the site members for great advice. cheers!

 

So had the vehicle at the dealer and they checked the plugs and read the codes (p0300, 0303,0304,0305) all specific cylinder missfire codes. They couldn't find anything wrong with either, however two head gaskets were leaking small amounts of oil so they fixed and told me to drive the vehicle to see if the codes came back. Got the veicle back yesterday and today drove the vehicle and another engine light throwing a p0335- CPS malfunction. If the sensor was malfuctioning would it not throw a code with the missfiring cylinder code? and r they related? I've changed a CPS on my olf SVT focus and wasn't much trouble but could I attempt on the Crossfire? Level of difficulty and cost?
Man when it rains it pours.

 

i have the same problem. i get a missfire in cylinder3 it only comes on when i punch it. if i hit the pedal to the floor then i get the shaking. i turn off the engine start it again all is normal but the light stays on for three days or so. after normal driving it goes away but as soon as i punch it it happens again i dont know why but this started as soon as i changed the cp sensor bosh i dont know why and today i started to hear a loud rattle from the rear and i dont know what it is im getting sick of fixing this thing

 

The missfires back and have come to the conclusion it only missfires when it's raining or sitting in the rain. Otherwise no problem. Codes the same. Cps and cylinder missfire codes. Could I spray the CPS with water displacement spray to combat the prob? Not sure what to do next. Dealership or replace the CPs myself as it seems simple enough or the fuel pump? The car getting to me. Thxs for any help Scott

 

Cylinder misfires come in many different flavors. Sometimes only 1 cylinder will fail, sometimes more, and sometimes it will jump around. The lesser amount of cylinders you have, the more noticeable the misfire will be. In all cases it depends on the condition of the electronics, and hardware (i.e.; spark plugs, spark plug wires, coil/coil pack(s), etc.) In my experience, the lesser amount of electronics you have, the easier solving the problem will be. This answer applies only to gas powered internal combustion engines. Not diesel powered engines.
First you want to make sure that ALL hoses and electrical connectors/wires are located in their correct place, and connected properly. Next to identify the problem. When does it miss? At idle or throughout the driving range (while at idle and in motion). Is it intermittent (does the miss occur randomly)? Does the vehicle seem to have 1 miss? Or more than one miss (This is more easily noted on vehicles equipped with motors that contain a smaller amount of cylinders)?
Now to explore each question, I will use a hypothetical situation. I have a small car with a 4 cylinder motor. I drove it home last night, and when I started it this morning, it had a definite miss.
To identify which of the cylinder(s) are misfiring, no actual tools are required. To find which cylinder(s) are having the problem, simply open the hood with the key "off," and check to see if anything is loose (i.e. a spark plug wire). If everything is snug, try removing one of the plug wires (NOTE: Only remove 1 plug wire at a time!). Then reach inside the car and try to start it. If you have a 4 cylinder motor any difference will become immediately apparent. In fact, most times the car will fail to start and stay running. If the plug wire you removed made no difference in the way the car runs, that means that cylinder is not firing. Replace the wire to its original location, and make sure that it is snug. Try another wire. Continue this process until you find the cylinder(s) that are causing the problem. (NOTE: Keep notes on which cylinder(s) are having the problem, and how the car behaves.)
Once you have identified which cylinders are having the problem, it is now time to determine the source of the problem. On newer cars (approx. 1985-present, depending on make and model) the problem can be more complex to try and solve. In this scenario, I am using an older car. Now it is time to see if the spark plug is getting any spark. To test this, remove the spark plug wire from the bad cylinder's spark plug, and set it against something metal on the motor, for best results, place the metal tip of the wire slighty away from the metal object (like the valve cover), but close enough for the spark to arc across (approx. 1/4 inch is best). Start the car. If you look at the tip of the wire and there is a spark arcing across the wire to the motor, that wire is transmitting spark. If it does not, skip down to the next paragraph. Since the wire is transmitting spark, the next thing to check would be the spark plug. (At this point you will need tools) Remove the sparkplug from the misfiring cylinder, and check for detonation of the tip of the plug (plug tip is destroyed), corrosion(white chalky residue), and foulage (if the plug is wet, and it smells like gas, that means that there is fuel getting to the plug, but the plug is not igniting it. If the residue is oily, then there is oil seeping in through to the combustion chamber. If it is not oily or wet, but is black, that means that the plug is carbon fouled, either from too much fuel (a rich fuel mixture), or that the spark plugs have not been cleaned/ replaced in a long time. To test the spark plug, plug it back into its wire, and set it again against something metal (NOTE: Make sure the location your choose, has the least chance of falling over and into other moving parts). Start the car, and check for spark at the end of the plug, if there is no spark, the plug is dead, and needs to be replaced. If it does spark, that means that there is either a fuel delivery problem, sensor malfunction, or vacuum/vacuum hose leak, and not a spark issue.

 

I had this same issue with a motorcycle of mine...it turned that I had a plug wire chaffing against something. It had worn through to the wire but only had the symptoms when it was raining because the moisture would cause the wire to arc...not letting the juice flow to the plug. For me it was a great opportunity to upgrade to some Magnacore wires!

 

All good advice, but one more step was overlooked :
IF the final step proves the plug is firing ok, then put you finger/thumb over the spark plug hole and have some else crank it over. If you have compression, you will be able to tell, if not, then :
1. broken rocker arm.
2. broken valve.
3. hole in piston.

 

Broken rocker arm or hole in piston. Are u serious! The car runs great but only missfires when raining. I will check the plug wires and anything in the gerneral area today and post my findings.

 

Get a spray bottle with some water in it, go into a dark garage or night time outside, the dark garage is best as it will be much darker. Spray water on the coil packs and wires, not too much. Start the car and switch of the light. With a little luck you will find sparks and pin point the problem.

I've done this and watched a firework display back in the old days, with sparks all over the cables and distributor.

 

Sorry, I missed the part about the car running normally again.
I was just covering all the bases on why a cylinder can be missing.