Q: 2008 Mazda CX-9 twin camshaft sensor with shavings

asked by on

I have a 2008 Mazda CX-9 check engine light came on it was diagnosed with a twin camshaft sensor problem it was replaced the light came back on they looked at the sensor there was shavings on it otherwise there is a delay when starting the car other than that it runs fine transmission and all.

Hi there. Remove the valve cover to the engine. Get a flashlight and look at where the sensor is located at on the top of the engine. Check to see where the camshaft sensor is located and see if the sensor is being chipped away from the camshaft. Disable the ignition or fuel injection system and crank the engine over. Observe the camshafts and see if they are moving straight or at a bowed angle. If the camshafts are at a bowed angle, then the bearings on the camshaft are worn out and need replaced. Since the cylinder head is aluminum, the cylinder head would need replaced. If the camshaft is not bowed, then watch it laterally and see how much it’s moving. If it’s moving too much, then the bearings are worn into the camshaft and the shim on the camshaft would need replaced. If you need further assistance with your camshaft sensors failing and seeing shavings where the sensor is installed at, then seek out a professional, such as one from Your Mechanic, to help you.

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. 2008 Mazda CX-9 twin camshaft sensor with shavings

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: Heater fan comes on when engine is shut off. 2009 Mazda CX 9 AWD

If you are referring to the blower motor in the passenger cabin, a faulty (stuck on) relay is a possible cause but the exact cause would have to be determined in a circuit trace. If the circuit is powered even...

Q: Mazda3 not accelerating

At 200 thousand miles it could be just about anything. You didn't mention f the Check Engine Light is on, but If it is not on, it probably should be. Turn the key on without starting the engine, the CEL...

Q: My truck won't rev past 1000 RPM

The mass air flow sensors are known to go bad on Nissan Titans. The symptoms you are describing point to the MAF not working properly. Check to be sure you have reconnected the new one correctly, proper continuity and grounds....

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...
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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...