Skip the auto shop - Our mechanics make house calls

Q: Puttering noise from 25-35 mph

asked by on

Hi there. My 2006 Diesel Jetta with 141K miles on it has suddenly started making a puttering noise. When I go around 25-35 mph, it sounds like I put a card in a bicycle wheel. Check engine light isn't on, and the temperature gauge is good. At one point it did shake slightly, but only for a second literally. It's been 6k miles since i have had my oil changed.

My car has 141000 miles.
My car has an automatic transmission.

A: There are a few common problems with your v...

There are a few common problems with your vehicle. The first is a problem with the EGR system. There is a pipe that cracks at a flex joint and causes a small exhaust leak, but that is normally heard all the time. The second common issue that makes a noise is a failing camshaft. The camshaft were made of too soft of a material and they wear unevenly, which in turn causes damage to the valve lifters, and can damage the valves if left too long. These are not the only possibilities, but they are common issues. I would suggest having the valve cover removed to inspect the camshaft, and checking the EGR system for leaks. If you would like to have this problem diagnosed for you, then I suggest using a qualified independent technician from YourMechanic.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: No reverse and will not down shift.

This may be a sign of low transmission fluid or a faulty transmission control solenoid. As you know, automatic transmissions use pressurized hydraulic fluid to change gears. Every time a gear change is required, the car's computer activates a transmission...

Q: When I start my car, the fan jumps on very loud for about a minute to a minute and a half. What would be the reason?

There could be an electrical wiring issue with the cooling fan from the cooling fan to the cooling switch / sensor or the thermostat could be sticking on causing the fans to blow harder as the engine may overheat until...

Q: Car cuts out when stopping and won't start

In order to figure out what is happening, you will first need to do some diagnostics. This will require connecting a fuel gauge, spark tester and a noid light to your car. Often, the hardest part of diagnosing the symptoms...

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.