I changed my crankshaft and cam sensor now my car is idling funny maybe reset the throttle body and it’s bucking

Changed my crankshaft and camshaft sensor changed MAF and iac valve still got p507 engine rpm higher then excepted rpm fluctuating

My car has 16200 miles.
My car has an automatic transmission.

Experienced mechanics share their insights in answering this question :
P0507 can set if there is an intake air leak, a faulty or clogged IAC valve, carbon buildup on the throttle body, a faulty power steering pressure switch, a faulty alternator and so forth. If you request a rough idle – fluctuating RPM diagnostic a certified mechanic from YourMechanic would use a code scanner to retrieve the diagnostic trouble code(s) from your car’s PCM (that is, the specific codes have caused the light to set) and then test the appropriate individual vehicle components or sub-systems (often a sensor, circuit, and the like) to pinpoint the reason why the RPM is not steady. In your specific case, fuel supply such as possibly clogged injectors, as well as possible faults in the MAF and oxygen sensors, would be considered. Once the faulty part or component is identified, it is explained to your satisfaction and the mechanic will let you know of the cost to repair. If you schedule the recommended diagnostic, the mechanic will resolve this promptly for you and all on a mobile basis right at your location. If you have further questions or concerns as you decide what to do, do not hesitate to re-contact YourMechanic because we want you to make the most of your repair dollars and help you get the best possible results.

How to Identify and Fix Common car Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced mechanics :

An indication that a vehicle is not receiving the right mixture of air and fuel is if the vehicle jerks or surges forward at high speed.
Motor mounts keep your engine attached to the car. Weak or broken mounts can`t hold the engine tight in the engine compartment and creates a vibration at idle. If the shaking subsides when the car is in Neutral, this could indicate the motor mounts are responsible for the vibrations.
The easiest way to reset your throttle position sensor is to unhook the negative cable from your battery for up to five minutes or to remove the fuse for your engine control module.
Do you have to reset computer after replacing throttle position sensor? After replacing the throttle position sensor in your engine, if the engine light was on and has a pending code, the code should go away. If the code doesn`t, however, then the ECM (engine computer module) will need resetting.
Your vehicle could have dirty fuel injectors, a damaged fuel pump, a blocked catalytic converter, a faulty mass airflow sensor, broken spark plugs, or even an accumulation of moisture.
Fuel injector nozzles can become clogged over time, which can lead to a sputtering engine, slow acceleration and the car not having enough power. Fuel injectors can be cleaned if the problem is caught early, but as the conditions worsens, the injectors may have to be replaced.
One common cause of shaking while idling can be loose engine mounts. Engine mounts are the connections between your engine and your car — they keep your motor safely attached while dampening vibrations produced by your engine. When those connections wear out, you`re more likely to feel the vibrations.
One of the main reasons why your vehicle could be vibrating at idle could be due to worn out spark plugs. When a vehicle`s spark plug is faulty, it can interfere with the air-fuel ratio leading to improperly firing cylinders, resulting in a misfire while idling. Replacing your spark plugs will solve this problem.
Dirty or Worn-Out Spark Plugs

Often, your car shakes when idle simply because it`s time to replace your spark plugs! When yours are dirty or worn out, they fail to fire in the right way. If this happens, they`re unable to ignite the fuel located within each of the piston cylinders on time.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

I changed my crankshaft and cam sensor now my car is idling funny maybe reset the throttle body and it’s bucking
ANSWER : P0507 can set if there is an intake air leak, a faulty or clogged IAC valve, carbon buildup on the throttle body, a faulty power steering pressure switch, a faulty alternator and so forth. If you request a rough idle – fluctuating RPM diagnostic a certified mechanic from YourMechanic would use a code scanner to retrieve the diagnostic trouble code(s) from your car’s PCM (that is, the specific codes have caused the light to set) and then test the appropriate individual vehicle components or sub-systems (often a sensor, circuit, and the like) to pinpoint the reason why the RPM is not steady. In your specific case, fuel supply such as possibly clogged injectors, as well as possible faults in the MAF and oxygen sensors, would be considered. Once the faulty part or component is identified, it is explained to your satisfaction and the mechanic will let you know of the cost to repair. If you schedule the recommended diagnostic, the mechanic will resolve this promptly for you and all on a mobile basis right at your location. If you have further questions or concerns as you decide what to do, do not hesitate to re-contact YourMechanic because we want you to make the most of your repair dollars and help you get the best possible results.

I changed spark plugs and wires & cleaned throttle body, car idles rough and gas mileage is changed does not backfire or anything
ANSWER : A few different components could be causing your issue. Your symptoms sound at first like a spark issue. If a plug was tightened down too hard, the gap can become smaller than intended. This would decrease the power of the spark and lead to a misfire.

Due to the fact these were just changed, I would inspect them and verify the repair is holding. If the vehicle is having a strong enough misfire, it will likely set a diagnostic code. You should attempt to have your car scanned, and see if any sensors are showing a problem. Some codes will not trigger the Check Engine Light, but will still help narrow down the cylinder that is having an issue.

If you need help with getting this fixed, consider YourMechanic, as one of our mobile technicians can come to your home or office to diagnose your misfire condition and help you fix it accordingly.

The car idles rough and is shooting out codes p0017, p0016.
ANSWER : Hello. This is a common problem with the variable valve timing solenoid on this engine. I have changed quite a few of these due to failure. I always start by checking the codes and testing the solenoids and the connectors as some of the time the connectors fail and have poor connections. There have been a few times that I have seen these codes due to low oil or the wrong oil and from the camshaft actuators failing, but most of the time it is due to the solenoids. If you are planning on having this fixed, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose and repair the rough idling issue for you.

My car has a rough idle when I start my car, when I stop at a light my car turns off. Is it the purge sensor?
ANSWER : This may be a result of a dirty or failing idle air control valve. The idle air control valve reads the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and at idle. Since this valve is controlled by the vehicle’s computer, it will adjust idle speed based upon other measurements such as engine temperature, intake air temperature and electrical system load or voltage. When you accelerate, the engine RPM increases, and as you let off the gas, the RPM slowly returns to the normal idling speed with the help of the idle air control valve making the transition from a higher RPM back down to idle speed. When the engine RPM drops below the normal range of about ~800 RPM, this often times will cause the engine to stall indicating a dirty or faulty idle air control valve. I would recommend having an expert from YourMechanic come to your location to diagnose and repair your idle air control valve.

The car idles up and down. Replaced throttle body temperature sensor, mass airflow sensor, and oxygen sensor.
ANSWER : Hello. If you have taken all those steps and the idle is still not at the correct speed, then the next thing I would look at is the idle air control valve. The idle air control valve is the component that is responsible for setting and adjusting idle air. If it malfunctions, gets dirty, or has an issue, then it may cause a low or high idle, a fluctuating idle, or in some cases even stalling. If you would like to have this done, a certified professional from YourMechanic can come to your car’s location to diagnose the idling problem and assist with repairs.

Car won’t accelerate past 25 mph and makes deep noise when you try too replaced o2 sensor maf sensor/ throttle body does rattle
ANSWER : Hi there. It is quite possible that your car has entered what we call a fail safe or "limp mode" due to an error code being activated and stored in the ECU. This will occur when the ECU or a sensor detects a mechanical or electrical fault on one or several fuel, ignition, cooling or powertrain systems. It’s designed to allow you to safely "limp" your car to a repair facility or home so a professional mobile mechanic can complete a car is slow to accelerate inspection and determine the right course of action. It is also possible that this issue is caused by a loose vacuum line or other component like the throttle position sensor.

Just put on new throttle body now when start car idles fine but as warms up idle starts surging and bouncing up and down
ANSWER : First you need to check all the air hoses and vacuum lines. Any air that enters the engine without passing through the throttle body will make it behave badly. Then I suggest you disconnect the battery for a few minutes and review the re-learn procedure for the car. It’s pretty intricate, and not following it exactly can lead to a failure. Failing that, I suggest you get professional help. You don’t want to just start replacing parts as that can get expensive very quickly.Your Mechanic can send a qualified technician to your home to check out your car and help you figure out what needs to be done next.

High idle after cleaning throttle body while on vehicle
ANSWER : Hi There,
This is completely normal for the idle to be little higher than normal after cleaning the throttle body. By doing this, you have introduced more air into the throttle body than it is normally used to. The computer is automatically adjusting for this (as it is designed to do) by adding more fuel into the motor, which results in the higher idle speed. I would suggest driving the vehicle around for about 5 minutes to allow the compute to go through the "relearning process" which essentially allows it to remap itself to the correct air/fuel readings which will result in it controlling the idle back to normal again. If this does not solve your problem, please reach out to us here at YourMechanic as we are always here to help.