Spotting abnormal engine behaviour on his car is not a good sign. Indeed, the engine is the main organ of your car and any symptom of a failure must be spotted instantly and you must look for the trigger of this sympton. If you are ever in the circumstance where your Ram ProMaster no longer accelerates, whether uphill or downhill, we have created this page to help you understand the cause of your malfunction. To get this done, we will review most of the motives that may justify your Ram ProMaster not accelerating properly.


My Ram ProMaster no longer accelerates properly because of ignition:

Let’s start our recap of the motives that can induce your Ram ProMaster to stop accelerating properly. One of the most common motives is that your ignition fails. We talk about ignition, but we can also extend the malfunction to the ECU which itself can transmit bad data that will affect your ignition. It can appear that your Ram ProMaster has been put in safety, do not hesitate to read this article for more information. To examine that one of these problems is not the cause why your car no longer accelerates, you will need to run your Ram ProMaster through the diagnostic tool. Furthermore, you can examine the state of your ignition coils, if you have several of them and one is defective it can explain the acceleration holes you come to feel, if you simply have one in normal conditions your Ram ProMaster should not start.

My Ram ProMaster no longer accelerates smoothly because of the injectors:

Let’s concentrate on the concerns with the injectors in your Ram ProMaster. If you have the feeling that your automobile is sputtering, that it undergoes a loss of power, it is quite possible that because of a bad fuel quality one or more of your injectors have obstructed or clogged, which brings about a bad air/fuel mixture sent to the engine and which will therefore inevitably disrupt its normal operation, do not forget to examine the state of your injectors. If during the check you find that one of your injectors is leaking on your Ram ProMaster, do not hesitate to read our small article to get rid of this failure.

My Ram ProMaster no longer accelerate as before because of the accelerator cable:

Another likely justification for the fact that your automobile no longer accelerates, whether you are driving, stationary, hot, cold or accelerating, is a pronounced wear of your accelerator cable. If the accelerator cable is at a pronounced stage of wear and tear, it will not slide effectively in its sheath and will generate a loss of power, check the level of wear.

My Ram ProMaster no longer accelerate because of the clutch:

One of the classic motives of a Ram ProMaster not accelerating when hitting the gas pedal, or not moving forward, is that your clutch disc is dead. In reality, the action of the clutch is to transfer the power from the engine to the gearbox which will then transmit it to the wheels. If this disc is “smooth”, you will no longer be able to transfer this power to the wheels and you will discover that your Ram ProMaster no longer accelerates, or at least, the engine may rev up, but the speed of your automobile will have difficulty raising. Browse through our article on the clutch that slips on Ram ProMaster, to evaluate yours and check that it is not the motive of your malfunction.

I do feel a loss of power when I accelerate with my Ram ProMaster because of the fuel filter:

As far as the fuel filter is concerned, we are struggling with the same type of problem as stuck injectors. If your Ram ProMaster no longer accelerates and you have the impression that it is sputtering or that you have drops when accelerating, it is realistic that your fuel filter is clogged. The result would be that your complete intake system is idling and therefore your engine lacks the fuel supply to operate normally. Don’t hesitate to examine it and replace it if required. In the event you have the impression that your motor vehicle rises in revs by itself, go through through this article it could support you to discover the cause.

My Ram ProMaster does not accelerate any more because of the particulates filter:

The last explanation for a car not accelerating, comes from your exhaust system. Today’s vehicles are built with an increasing number of options to limit pollution emissions, the particulate filter is part of this package. Nevertheless, according to your use, it is possible that it can become clogged and blocked. Especially if you make short journeys and can mount your car in the RPM. In such a case it is possible that your particle filter gets clogged and that your Ram ProMaster does not accelerate anymore. Get it examined out.

My Ram ProMaster does no longer accelerate because of a punctured hose:

To conclude, last explanation, and certainly the least annoying for you, it is possible that one of your fuel or air intake hoses is punctured or cracked and that it motives a lack of air or fuel which will bring about a car which does not accelerate any more, examine below your bonnet, engine running, the level of wear of your hoses, be careful not to burn yourself. If ever you are in this circumstance, it is possible that your Ram ProMaster does not hold idle, in this case consult our article to deal with in depth the dysfunction.

If you have any further questions about the Ram ProMaster, do not hesitate to consult our Ram ProMaster category.