ESP BAS lights on, no cruise and now engine bucks

Hello,

it sounds like you have two separate problems. The ESP and the BAS lights are for the electronic stability program and the braking assist system. The engine sounds like it is misfiring have you installed new spark plugs lately?

If not here is a guide to help you get the problem fixed.

https://www.2carpros.com/articles/how-to-change-spark-plugs

I would check for codes as well

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing


Please let us know what you find ;)

Cheers, Ken

Hello--I noticed car runs perfectly smooth at normal cruising and at stops//starts. I put in one can of seafoam yesterday and filled up tank with mid-range gas. It ran fine until i gunned the engine--then and then only does engine lose power and bucks then recovers--it doesnt sound like misfiring. years ago i ran a car with fuel injectors accidentally out of gas. afterward it bucked hard while never stalling. They cleaned injectors and i believe replaced a fuel sensor as I recall. I will say that due to financial straights recently i was using regular gas instead of midrange. book calls for midrange octane. do you think could cause bucking or should i just get codes checked. Car dont stall just loses power forward when you press hard on accelerator then buck when it recovers as you take foot off gas petal. Thank you so very much for your assistance and reply!!!!!

I am not certain when i had spark plugs changed last--i will check my records:)

Yes, I would have the codes read and it is starting to sound like a weak fuel pump.

Here is a guide to help you test it.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator


Please let us know what happens.

Cheers, Ken

Hello I contacted Chrysler to see if they will replace fuel tank assy per X53 bulletin that states car can stall/run rough after fill up due to faulty check Valve. My car started this day after fill up. However, yesterday car starting bucking again and check engine lite started flashing on/off also. I lifted hood and it appears like oil film on right side of engine cover--that was not there before. I am wondering if faulty EGR Valve can be cause of all the bucking, and the oil on engine cover. Is there link to self test this or should I just go to auto parts store for code check? Thank you very much!

Hello,

Yes I would head to the auto parts store and have the codes read so we can see whats going on.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please let us know what happens.

Cheers, Ken

Hello! I had codes checked by autozone--this it what they said: P0300 P0339 P0335 P0300

IGNITION COILS THEN SPARK PLUGS---BUT HOW TO KNOW WHICH COIL???

is there a way to find out by code which coils? car has 8 as you know. I am thinking to take car to Oreillys autoparts and have it scanned there also

I would change out all of the spark plugs and then clear the codes to see what happens.

https://www.2carpros.com/articles/check-engine-light-clear-codes


Please let us know what happens.

Cheers, Ken

will having the codes read again after plugs clear out previous codes? Thank you again very much:)

Yes it will. Please get back to me with the results :)

Hello I want to update you on car. I had car on scanner at two auto parts stores. One showed ign coils and crankshaft positioning sensor and random misfires. I took to another a week later and it showed all ABS sensors to check. Plus Crankshaft positioning sensor again. The check engine light is off. Today I made left and hand turn and car stalled--this never happened before. While car started again when i put it in gear initially it wouldnt shift into drive. I put it back into park then drive again and it moved. Then after 100 ft it stalled again and started up but would not shift when i put it in drive, until i put in park and back into Drive. I am thinking to replace the crankshaft positioning sensor 1st. Can you tell where this sensor is on the 2005 300C 5.7 HEMI? thank you very much for your reply:)

The Crankshaft Position sensor is located at the right-rear side of the engine cylinder block. Here is a diagram (below).

Please let us know what happens.

Cheers, Ken

I took car to a highly recommended local repair shop--they said their diagnostic equip showed two bad ABS sensors on rear.They replaced them and said the tone ring on left 1/2 axle from broke and axle hub rusted. They said a new axle/with tone ring is 395 installed. and are presently looking for a used axle with good ring. They think all the bucking and stalling will stop with this repair. Ive been waiting for 5 days for them to find a axle used in good condition for my car.

Nice work, we are here to help, let us know if it fixes it.

Cheers, Ken

Apparently Chrysler used the 1/2 axle on 2005 model only that year--they changed part in 2006 and can now only get new ring with new axle. I have been told by parts places that the ring cant be purchase separately for 2005. Have you heard of this before? Thank you I will inform you after parts come in and are installed.

Please let us know what happens.

Cheers, Ken

Hello! I got car back after replacing 1/2 axle and used tone ring from used parts place.The car burped twice and ran fine after. Apparently a car will do that after some repairs while onboard computer reboots so to speak. It has run fine since repairs and the two burps. Thank you for your assistance very much!

Hello I drove car twice since repairs were done ie two rear ABS sensors and left rear 1/2 axle with ring. The axle and ring were used parts. I drove car down street as listed in above update. Today I had it lunge twice--and later hit the pedal hard and it ran right up in tach and speed without bucking. Later I tried that again with full throttle accel and ran up fine for two seconds-- then bucked hard and check engine came on again. The BAS and ESP lights also came on. After letting it sit off for 20 minutes then BAS and ESP lights went off check engine stayed on and car has driven normal. I notice most of the lunging and bucking is on acceleration from a stop at light. Most but not all. I will take car back to repair shop. I have tuesday a appointment with dealer to do two airbag recall repairs. I am debating whether to put more money in car or try to trade it in as is. It is a 12 yr old car with 75000. I dont want to start replacing alot of expensive parts.

Yep good call, see what the dealer says and go from there. Please let us know what happens.

Cheers, Ken

Hello--dealer did this: tune up --changed plugs and pressure cleaned fuel rails to remove carbon. The car is eligible for the free fuel tank and fuel pump and check valve sensor assys. This is due to stalling and rough running and is the X53 issue for this car. This they had to order. They put plug wires on wrong--crossed 7 and 1, the service guy acknowledge the error after i brought it back--later he would admit to nothing except the mech" made a adjustment". Car still stalls and bucks occasionally. The lights for check engine BAS and ESP are off. I will take car back for the fuel tank and associated pump and sensor replacements--after 4th of July. I pray that fixes the car. The dealer has a better diagnostic device--but they still did nothing except plugs and the pressure clean of fuel rail and throttle body --at $467 and change. I truly pray the fuel tank and assy fixes all the problems so I can sell the car,and buy a new vehicle.

Please let us know what happens. Thanks for getting back to us

Cheers, Ken

hello! yesterday i dropped off 300C at dealership to replace fuel tank. I was told by dealer that tank is only thing relaced on X53 issue-they redesigned tank so fuel doesnt end up in EGR --thats what service manager told me. On way there my car stalled again with only 1/4 tank--i restarted in neutral and car moved around corner and seemed to stall again. I pulled quickly off road and put car in neutral and it was surging low rpm and Electonic Throttle Control light appeared. I shut car of 10 minutes--restarted and drove safely to dealer without further issue. I pray the tank fixes all. I hate going to a dealer--except for warranty work.

Yep it is a pain for sure, let us know what happens :)

Hello---I had the fuel tank replaced last week. Yesterday car stalled 3 times on me---no lights on dash. I am taking car Wednesday to a reputable local garage to have front brakes done(rotors and pads) and a wheel bearing replaced--maybe. I want to tell them to have a Crankshaft positioning Sensor on hand to replace--This has shown up on 90% of all scans of the codes. I understand it can cause stalling and rough idling--Also APPS under gas petal can too, or electronic module. I want to sell this car asap---but want to solve stalling 1st for obvious reasons. I DONT want to just start replacing costly parts.. What is your best opinion on cause of stalling for this car please? Thank you very much!