Low engine power

The problem is the first thing I would do is scan all the computers for codes the ABS/traction control and engine control module.That would be my starting point. At least the engine codes would help. Sounds like its in reduce performance mode. I need the exact code numbers not code descriptions? Otherwise we are just guessing on which direction to even start.

This guide can help

https://www.2carpros.com/articles/engine-has-low-power-output

Please run down this guide and report back.

Alright keep me posted on what you find unfortunately cars these days have so many computers. So you need a professional scan tool that can read all the computers perform special tests etc. For problems like these.

Any way you can post the code for me? This sounds like either a bad TPS(throttle position sensor), or the fuel pump. Have both checked, or post the code please.

Turn ignition on, engine off. Before clearing the DTCs, use the scan tool to record the failure records for reference. Using the CLEAR INFO function will erase the stored failure records from the PCM. Record the failure records. Clear the DTCs. Are any of DTCs P0121, P0122, P0123, P0218, P0502, P0503, P0711, P0712, P1121 or P1122 also set?

Fluid level low.
Oil filter and seal missing, plugged or damaged.
Spacer plate and gasket damaged or misassembled.
Pressure Control (PC) solenoid valve damaged or contaminated.

Let me know how it goes

Hello -

Please let me know if your model is a GS or LS. Also your engine size in liter and the 8th digit of your VIN.

Also, I know you had the code, but do you remember what the code number was?

For now, please go to Auto Zone (AZ) or O'Reilly's (OR) and for FREE they can pull the codes to the car. Most important: Once they check your codes, if they find something and you don't get it fixed and need to get back with us, please make sure you tell us exactly what the code was, number and all. Example, if the code was E0568 O2 Sensor bad. Then make sure you give us all of that. While there for FREE also they can bring their tester out and check your battery and alternator.

Are you sure you are getting a good strong spark? If not, we need to figure out if it is electrical or fuel related. Pull a plug wire off of the spark plug and insert something into the end of it and have someone try to start the car and have the metal object really close to a piece of metal on the engine and see if you are getting a good strong popping blue spark. Don't have your hands on any part of the metal! If there is no spark, then it is electrical.

If you are getting good spark then spray some starting fluid in the throttle body and try to start it and see if it tries to start then.

I wouldn't change the pressure regulator yet. If you pull the vacuum hose on yours, is there fuel in it?

You may need to get a fuel pressure check on the fuel pump to ensure it is putting out okay. We will see.

Of all the things you mentioned, I would tell you to start by checking the catylatic converter. If the light isn't on, there is a good chance it is starting to plug.

Let me know what you find.

Joe

Let me know what you find.

Joe

I'm glad you got it fixed. I had a feeling that was the problem. Everything you described led me to believe that. Actually, the intake could have caused the converter problem. Coolant, unburned fuel. Could have caused it to melt down.

Take care and let us know if you have questions in the future. And thanks for using 2carpros. Com.

Joe

The demands of your engine change under different circumstances.

While in park or nuetral, there's no load, while in drive or reverse, the entire weight of your car creates a tremendous load on the motor.

Unfortunately, it's impossible to diagnose your problem from here, but I can give you the procedure to check.

First, check your computer for codes.

Second, check the ignition system. Make sure there's no misfire. Check all plugs and wires.

Third, make sure you have proper fuel pressure while the engine is under load. You do this by hooking up a pressure gauge that can be seen from the passenger compartment while driving.

Fourth check that the injectors aren't clogged. They can feed a engine not under load just fine, but won't supply enough fuel once you get in drive.

Fifth, check a clogged cat or exhaust system, though I doubt this as your engine wouldn't rev high in park either.

Lastly, check the computer/sensors for a faulty part. (Including the wires and connectors)

I would do a fuel pressure test and a exhaust back pressure test sound's like you could have a plugged cat.