Skip the auto shop - Our mechanics make house calls

Q: Replaced Camshaft Position Sensor, now car idles rough, quits.

asked by on

This past weekend, replaced the camshaft position sensor on my daughters vehicle. Was running fine Sunday and Monday. Tuesday, rough idle, no pick up upon acceleration. Wednesday, no pickup upon acceleration and stalled 2 times at stop light. Not sure what is happening.

My car has 120000 miles.
My car has an automatic transmission.

Hi there. Why was the cam position sensor replaced? Was there a code stored, check engine light on? If the rough idle and stall started after the sensor replacement, try putting the old sensor back in and recheck the operation. If the car still has the concern, then the cam position sensor may not be at fault and this is simply an unfortunate coincidence. Is the check engine light currently on? Check for any codes, stored or pending, and proceed from there. The idle air control valve could be sticking or failing. Attempt to clean the valve with a suitable cleaner and see if the operation improves. If it does not improve, it still may be the idle air control valve is beyond maintenance and will need to be replaced. The safest route to take is to have a qualified technician perform an inspection to avoid replacing unnecessary parts. Your Mechanic has several available technicians that can assist you with a rough idle inspection.

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

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: I changed the throttle body on 2006 Chevy impala and it says service throttle body after resetting it.

Hi there. Check the resistance on the throttle position sensor on the throttle body and the throttle pedal position sensor on the gas pedal. There should be a resistance on the sensors. If one or both sensors have no resistance...

Q: My right front wheel is not breaking

Hi there. It sounds like you have a collapsed hose. This will prevent fluid from getting to or from the caliper and can create real problems. Loosen the line at the caliper and see if brake fluid comes out when...

Q: How much to replace the clutch master cylinder.

Hi there. Although this might be a job that one of our mobile mechanics could complete, I would recommend consulting with a certified Chevrolet Corvette mechanic to complete a clutch master cylinder replacement on your 99 Vette. Replacing the clutch...

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...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...