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300M

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Question
Do its fuel injectors need to be cleaned and if they do, is there an effective way to clean them without removing them??
Hi there. This could be a faulty MAF (mass air flow sensor), which regulates the air going into the engine allowing for the proper air/fuel mixture. This could also be related to the idle air control module. This also helps...
Question
Car Stalls in 2nd Gear after Starting
Test/evaluate shift solenoid(s) on transmission. You can probe for resistance on solenoid coil through the wiring harness but even if within spec, solenoid mechanism could still be sticky or intermittent. Faulty solenoids are a common cause of this type of...
Question
How to change the lifters
In order to replace the valve lifters, removal of the valve covers and rocker arm assemblies is required. The job can be a little extensive and many of the fasteners removed cannot be reused or they may cause damage to...
Question
Chrysler 300M won't start
Try to lock and unlock the door with the key to see if the alarm is deactivated properly. If you see the thief light on the dash still lit when you try and start it, then it is not deactivated...
Question
Broken oil seal
Hello. Thanks for writing in about your Chrysler 300M. Simply put, a broken seal won't last at all since it's already broken. When it's broken it cannot handle the pressures of the transmission pump. If you'd like assistance with this,...
Question
I have p0203 dtc injector circuit malfunction
Hello. If this occurred right after the replacement then I would look for a pinched wire. It is common for there to be a wire that is pinched or loose or a bad connection. If everything is fine it may...
Question
Advice on which weight of oil to use
Your car calls for 10w30 oil. The 10w is the winter grade that is blended with the 30 weight oil. The oil 5w30 will be a good replacement and should be compatible with your car. I would not go to...
Question
Dull knocking from the front end of the car noticeable at lower speeds
The noise would have to be heard to give a diagnosis for this. The noise may be coming from the brakes or suspension. The rack and pinion may be causing the issue but this would be difficult to determine without...
Question
The car cuts off when it stops in traffic
If the engine stalls at a light then you may lose the throttle and power steering assist. The stalling may be caused by several different things on a high mileage vehicle. The idle control system should be looked at...
Question
Problem with the electrical system of the car
The BCM or body control module controls all of these items and there is a technical bulletin to get the BCM reprogramed. The reprogram should fix the issue for you. The dealer will have to do the reprogram for you....
Question
Limp mode
If you do not use the recommended fluid for Chrysler or any transmissions in general, it can cause the transmission to have shifting and slipping concerns. Even damage can be caused from incorrect fluids being used. This is why I...
Question
Water spraying from radiator hose right underneath hood. Just had coolant system flushed. Thinking hose just needs replacing
Hi, thanks for writing in. Could be either, given recent cooling system service. If the coolant system flush was very recently, as in days ago, take it back to that shop so they can have a look. Perhaps a mechanic...
Question
My car is overheating - 2002 Chrysler 300M
I'm sorry for the issues you are going through. There are only a few more steps that you could be experiencing. I will take you through some steps and try to get you back on track. As much...
Question
My car is over heating. It doesn't take long for it to over heat till it is smoking and I have to turn the car off.
There are a couple of possibilities for such a rapid overheating situation. The thermostat may have failed in the "closed" position preventing the hot water from circulating and cooling in the radiator. The water pump or the serpentine drive belt...
Question
My car developed a very loud knocking sound.
It is possible the valve lifters are starved of oil due to a failure in the rocker arm. There are reported cases where the rocker dowel pins shear off. A direct consequence of that is oil starvation as the oil...
Question
My steering system is making noises, I don't know what the problem is
Perform a dry park steering check. Put the vehicle on a flat surface and have someone turn the wheels left and right quickly. While they are doing that, take a flashlight and look at the steering linkages under the vehicle....
Question
Battery cable issue - 1999 Chrysler 300M
Depending on how this was done, you may have shorted out the positive terminal to the ground by inadvertently completing the circuit to ground. When this happens, the positive terminal will not produce any current because it does not have...
Question
My oil light does not come on when the oil is low, and the heater only blows hot air for a short time.
When the oil pressure drops lower than 8 psi, then the oil light will come on. If the oil pressure drops and there is no light, then check the oil pressure sensor harness for power. If there is power, then...
Question
My car gets stuck in low gear when decelerating
Hi and thanks for contacting YourMechanic. It sounds like that the low speed shift sensor has failed in the transmission. This is common occurrence to the transmissions in the Chrysler vehicles. I recommend replacing the low speed shift sensor and...
Question
fuel leaking from engine
Fuel leaking from any location on the vehicle is a fire hazard, especially in the hot engine bay. Fuel leaking in the engine bay can be coming from a number of locations and components, such as: any of the 6...

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