Skip the auto shop - Our mechanics make house calls

Q: no acceleration power

asked by on

i have changed trans, coils, spark plugs, checked cats not stopped up, cleaned fuel injectors, cleaned tb, maf, checked the egr valve, swapped gears to 410s, and i still do not have any power when i accelerate after if warms up pls help

My car has 140000 miles.
My car has an automatic transmission.

A: You did not mention replacing the fuel filt...

You did not mention replacing the fuel filter and checking the fuel pressure. If the fuel pressure is okay, then the computer should be scanned to see if there are codes and correct sensor readings. The MAF (mass airflow sensor) can cause no power and no acceleration and can be seen on a scanner if it is the cause. Sometimes these sensors will think the vehicle is above 10,000 feet above sea level. This will cause a starvation of fuel in the engine. If you want to have this diagnosed before moving forward with any repairs, a technician from YourMechanic can come to your home or office to inspect your car’s loss of power to let you know what should be done.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Bad pcm?

If you can run your engine, with the fuel injectors on the right bank disconnected, it is not your PCM (ECM). By disconnecting the injectors, the computer cannot put fuel in without opening the injectors. You need to check the...

Q: smashed bumper in front and hood alittle.

Have you noticed any symptoms so far while driving it? It could be unsafe depending on how severe it is, but I would really have to visually see it and check under the hood to make the call. You can...

Q: Truck is not getting fuel until holding the ignition in for a few seconds.

You may very well be on the right track with this and you should check the control module to be sure. You may also want to check the fuel pressure regulator as well to be sure you are getting enough...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...