Dodge Ram High Idle in Park

Dodge Ram High Idle in Park is a common issue with Dodge Rams equipped with the 5.7L Hemi V8 engine. The idle speed of these vehicles can increase to as high as 2500 rpm when the vehicle is put into park and left running. This usually occurs due to one of three possible causes: a vacuum leak, an incorrect idle air control valve setting, or a faulty throttle position sensor (TPS).

A mechanic should be consulted if this issue persists after inspecting the vacuum hoses and cleaning out the throttle body. Depending on what exactly is causing the high idle, repairs could involve replacing broken parts or making adjustments to existing ones in order to bring it back down to normal levels.

The Dodge Ram has an issue with the high idle in park, where it idles too high for no apparent reason. This can be an annoying problem, as it is loud and uses more fuel when you’re not driving. If your Dodge Ram has this issue, you’ll want to look into a few solutions that may help fix the problem.

These include adjusting the throttle body or replacing related parts like the idle air control valve and throttle position sensor. Depending on your situation, one of these methods could solve your high idle in park issues for good!


What Causes High Idle in Park?

High idle in park can be caused by a variety of factors. A few common causes include dirty or clogged fuel injectors, air leaks in the intake manifold, vacuum leaks, a faulty throttle position sensor (TPS), and/or an improperly adjusted idle speed control valve. The first step to diagnose high idle in park is to check for any potential air leaks as these can cause an increase in engine RPMs when the vehicle is parked.

If no air leak is found then it’s time to inspect the throttle position sensor and its related components such as wiring harnesses and connectors for any damage or corrosion that may lead to improper TPS readings. In some cases, adjusting the IACV or Idle Air Control Valve may also help reduce engine idle speeds while parked. Additionally, checking fuel pressure levels and replacing clogged fuel filters are often necessary when dealing with high idles in park as well since they will directly affect how much gasoline is being delivered into the combustion chamber at all times which could further contribute to elevated RPMs when not driving.

What Sensor Can Cause High Idle?

High idle can be caused by a wide variety of sensors, including air mass meters, oxygen sensors, coolant temperature sensors and throttle position sensors. The air mass meter is used to measure the amount of air entering an engine’s cylinders and aid in fuel delivery control. An oxygen sensor monitors exhaust gases for proper combustion ratios which are essential for efficient operation.

Coolant temperature sensors keep track of the temperature within an engine so that it runs at optimal efficiency while the throttle position sensor measures how far open or closed the accelerator pedal is pressed and helps regulate fuel injection based on driver demand. All these components work together to maintain a smooth running engine with minimal emissions but if any one fails then high idle may result as well as poor performance, increased emissions and reduced gas mileage.

How Do You Fix High Engine Idle?

If you have a high engine idle, it can be an annoying and potentially dangerous problem. Fortunately, there are several steps that you can take to resolve it. The first step is to check the air filter, spark plugs and other components of the ignition system for any signs of dirt or damage.

This will help ensure that your engine is getting enough air for proper combustion. If this doesn’t solve the issue, then you may need to adjust the idle speed screw on the throttle body by turning it clockwise until it reaches a higher RPM level than before. Additionally, if your vehicle has an electronic throttle control (ETC), then make sure that all its wiring is connected properly and free from corrosion or damage as well as checking whether any codes appear in its memory which can indicate a fault with certain components of the ETC system such as sensors or actuators.

Lastly, replacing worn parts like hoses and gaskets can also help reduce overall engine vibration which could be causing excessive idling too so make sure to inspect these regularly as part of regular maintenance routine too!

Can High Idle Cause Damage?

High idle is when the engine runs at higher than normal RPMs, usually over 1,000 RPMs. Although high idle can be beneficial in certain situations, such as warming up your car on a cold morning or running heavy loads with an automatic transmission, it can also cause damage to a vehicle if left unchecked. The potential damage that high idling can cause includes excessive wear and tear on the engine components such as spark plugs and pistons; increased fuel consumption; decreased performance due to inefficient burning of fuel; and reduced life expectancy of the engine components.

High idle can also lead to overheating problems since more fuel is being used while at an elevated RPM level which leads to increased generation of heat within the motor. This could result in long-term issues such as cylinder head warping or even cracking which would require immediate repair or replacement resulting in costly repairs for any vehicle owner. Ultimately, it’s best practice to keep your car’s idle setting at factory defaults unless there are specific reasons why you need a higher setting – otherwise you risk doing unnecessary damage to your vehicle leading to premature failure down the line.

Dodge Ram High Idle in Park


6.7 Cummins High Idle in Park

The 6.7 Cummins high idle in park is an optional feature that allows the engine to run at a higher RPM when it is running and parked. This can be beneficial for those who want to warm up their vehicle quickly, reduce wear on the engine, or just generally improve air conditioning performance. It usually only engages when the vehicle is in park and often requires a special switch or button to engage it from within the cab of your truck.

Dodge Ram High Idle Start Up

The Dodge Ram’s High Idle Start Up feature allows the vehicle to stay idling at a higher RPM when starting up from cold. This is beneficial for colder climates, as it helps prevent undue strain on the engine components and improves fuel efficiency. Additionally, this feature can be adjusted according to the driver’s preference, allowing them to set their ideal idle speed depending on their particular needs.

How to High Idle 6.7 Cummins

If you are trying to high idle your 6.7 Cummins diesel engine, the process is relatively straightforward and can be done in just a few steps. First, locate the ECM (engine control module) on your truck’s dash and adjust the settings according to your desired idle speed. Next, check for any codes or issues that might come up as a result of this adjustment and make sure all connections are secure.

Finally, start the vehicle and allow it to settle into its new high idle setting before driving off!


In conclusion, the Dodge Ram High Idle in Park issue is a common and worrisome problem for many owners. Although it may be intimidating at first to troubleshoot the underlying causes of this high idle, there are a few simple steps that can help you diagnose and address the issue. Taking basic maintenance steps such as checking air filters, fuel injectors, and oxygen sensors can often resolve this problem quickly.

If these do not seem to work or if you experience any other significant issues with your Dodge Ram High Idle in Park, it is probably best to seek professional assistance from an experienced mechanic who has knowledge specific to your vehicle’s make and model.


  • Zayn

    John Zayn Smith is a renowned truck enthusiast, automotive industry expert, and author. Beginning his career as a mechanic, Zayn's curiosity led him to explore all facets of the trucking world, sharing his insights through in-depth articles on His knowledge spans truck mechanics, trends, and aftermarket modifications, making him a trusted resource for both professionals and hobbyists. Outside writing and mechanics, Zayn enjoys off-roading, truck shows, and family time. Follow his work for the latest in truck-related news and tips.

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