Q: Lack of acceleration lumpy idle doesn't pull away well.

asked by on

I have recently had some work done on the car at audi where they found oil in the header tank and carbon in the egr valve which they replaced. Since I had it back the idle has become very lumpy and can be worse when the temperature outside is hot. The acceleration is lacking when it comes to motorway speeds and pulling away is sometimes not the best. Also when starting the engine it can have a bit of a judder. Audi took it for a test drive and said that my clutch and flywheel were near to the end cos of it slipping. I then took it to another garage and they said that the clutch is fine about half worn. He mentioned that it may be injector problems. So am wondering what you think and how do I go about diagnosing the fault without spending lots of money. Don't have the engine management light on so a little confused. All I know it's not that nice to drive at the moment. I have a 2 tdi.not the v6.

My car has 107000 miles.
My car has a manual transmission.

Hi there. This can be an injector issue, but from my experience it sounds more like a failing catalytic converter. After the type of service you had it is common for the catalytic converter to fail and cause this so I would start by checking that first. If it is fine, then I check the injector flow rates and the fuel pressure. The air flow meter is also a common failure that causes this so that needs to be checked also. If you are going to have this repaired, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose and repair the poor acceleration.

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. Lack of acceleration lumpy idle doesn't pull away well.

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: Idling problem when hot

It sounds like you may have a clogged fuel filter problem or possibly an O2 sensor. I would inspect these two issues. You may have two fuel filters, one under the hood in the back close to the fire wall...

Q: Having problems removing rotor

In order to remove the rotor on most of these cars you have to remove the two screws holding the rotor on and then install them into the opposite holes and turn them in just enough to put pressure on...

Q: Q: Air conditioning is noisy and slow to blow cold

From the description provided, there seems to be two different scenarios behind the problems being experienced by your Acura’s air conditioner. Though the information is limited I can try and guide you in the right direction to why that is....

Related articles

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.