Q: Q: Acceleration problems

asked by on

I've been having trouble with my Commodore lately. The car starts fine however when I touch foot on the accelrator just in park, the whole car shakes and shudders followed by a only explained as a slight rattling noise. The car will then cut out completely. I've had the RAA look at it and be pretty stumped. Got a lube mobile mechanic to have a look and he tested spark plugs leads etc. all tested ok, for him to then tell me that it's the fuel pump, however the same problem occurs on gas? Could that still be the problem? Any advice?

Hello. Most of the time this occurs from a failing throttle body. What I would be concerned with first is the noise. If it has a failing timing chain then this can occur, but that noise will also happen if the engine is stalling. If there is no engine noise prior to trying to accelerate then I would suspect a failing throttle body. Prior to changing this I would scan the computer for codes and also check the sensor inputs to see if any of them are not reading correctly. By doing this the issue should be able to be found.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Q: Acceleration problems

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: Engine loses power, revs high, cannot shift gears - 2014 Nissan Rogue

Hello. It sounds like there is an intermittent problem with the throttle position sensor or the idle air control valve. These two sensors are made into the throttle body and the throttle body assembly would have to be replaced in...

Q: I give my car gas, and it shuts down

Hi there. Are there any warning lights on? If there are any warning lights, this could lead us to the possible cause of your concern. However, low fuel pressure could be the cause. If there is not sufficient pressure in...

Q: Pinking rattles when accelerating

Hello there, thank you for asking about your 2003 BMW 760Li. Spark knock, or pinging, can result from excessive carbon build up. There is a technical service bulletin (TSB) regarding this condition for your vehicle: SI B 11 11 06....

Related articles

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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.