Skip the auto shop - Our mechanics make house calls

Q: No acceleration

asked by on

Got codes 33 35 56 55 63. Runs for awhile hard to start no acceleration.

My car has 154623 miles.
My car has an automatic transmission.

A: The list of codes you are getting point to ...

The list of codes you are getting point to different sensors. Code 55 is a computer error code and so you may have a computer failure.

I would first look at the computer under the hood to see if it has bad connectors in the wire harness and/or problems in the wire harness itself. The vehicle may have more than one problem and would need to be looked at by a qualified mechanic. They will be able to diagnose the codes you are getting and fix your acceleration problem.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Ball joints rack and pinion

Personally, I have not heard of this situation before, but any failing suspension component puts more stress on the rest of the system as they are designed to work together. If you would like a mechanic to inspect the suspension...

Q: Place in OD and starts in OD instead of 1st. Must manually shift down into 2nd gear then upshift. What would cause this?

It sounds like the transmission is in fail safe mode. The shifting in your truck is controlled by the computer, (PCM). There are 2 shifting solenoids, a 3-2 downshift solenoid, a line pressure solenoid, and a TCC (torque converter clutch)...

Q: Cruise control quit working

Thanks for writing in about your 1998 Chevrolet C1500 Suburban. I would want to diagnose the brake pedal switch first so I wouldn't replace one that is working fine. A technician using scan tool will easily be able to see...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...