RPMs will not go past 2,000?

Hi,

Vehicle AC systems are designed to be turned off under heavy acceleration to reduce the load on the engine. If you are pressing the pedal to the floor, that may be what is happening.

Next, do you have to hold the throttle to the floor for it to slowly rev to 2K RPMs? Let me know that. And I have one last question. Does the check engine lamp stay on or flash while the engine is running? If it does, the next step would be to have the computer scanned for diagnostic trouble codes so we can narrow things down.

Here is a quick video showing how it's done:

https://youtu.be/YV3TRZwer8k

Let me know as much as you can and if possible, scan the computer if the light is staying on.

Take care,

joe

Hi,

The idea that you hold it to the floor to achieve this could be caused by several different things. For example, there could be a timing issue, an issue with the PCM, a fuel pressure-related issue, plugged catalytic converter, a large engine vacuum leak, and so on.

Are there any odd odors when it's running? For example, do you hear anything that sounds like a restriction in the exhaust? Also, when you hold it to the floor, do you notice any black or gray smoke from the exhaust?

What I would recommend is this. In an effort to narrow things does a bit, I would have the can-bus scanned for codes. CAN stands for controller area network. Basically, the different modules are tied together via a few wires so they can communicate with each other. This type of scan will retrieve codes regardless of the module storing them.

Here is a link that explains how it's done:

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

Let me know.

Joe

Hi,

What color is the smoke that comes from the left side? Is it possible for you to record it starting and running and upload it for me to hear?

Let me know.

Joe

Could the white smoke you mentioned be an indication of a head gasket-related issue? Coolant burns white. Is there any evidence of coolant usage?

Let me know. Also, if you could let me know the short-term fuel trims, that may help me. I'm surprised there are no codes set. Did you scan the can-bus?

Let me know.

Take care,

Joe

Hi,

I watched the video and questioned if that is just steam. What was the outside temperature when you recorded this?

Also, you indicated an odor. Was it a sweet smell that could indicate engine coolant or did it seem more like a rich fuel mixture?

Let me know,

Joe

Hi,

Check the throttle position motor wiring connector to make sure it isn't damaged or corroded.

I attached a pic below of the throttle motor.

Let me know what you find.

Joe

Both codes are related to the throttle position sensor. At this point, we need to go through the diagnostics to see what is causing the problem.

If you look below, I attached the diagnostics starting with the P2135. The rationale is this. The P0507 indicates if there are additional codes, they should be checked first.

The testing does require a scan tool that can communicate with the PCM. Take a look through them and let me know if you are comfortable performing them.

Take care,

Joe

See pics below.