Skip the auto shop - Our mechanics make house calls

Q: Car stutters, loud tick at low rpm

asked by on

When I accelerate out of a stop the car stutters and a loud ticking noise gets louder and louder at low rpm than levels out and drives fine besides the occasional misfire. At autozone, it coded for possible exhaust leak, o2 sensors and multiple cylinder misfired. I replaced the o2 sensors and it didn't help. Any ideas? Please help! 08 Cadillac cts

My car has 170000 miles.
My car has an automatic transmission.

Hello. It sounds like you may have a couple of different issues going on here. Most of the time it is caused by a misfire which can mean that you need a tune up. I usually check the ignition coils and the spark plugs to see if they need replacing. If those are fine then I also check the timing chain. It is common for this engine to have timing chain problems which will cause this to occur. If you want to have this stuttering problem checked out, consider YourMechanic, as a certified mechanic can come to you to [diagnose why the vehicle is stuttering and misfiring] https://www.yourmechanic.com/services/engine-is-misfiring-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

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: How much does a battery and its cable replacement cost to repair for a 2012 Chrysler 300? labor and parts?

Hi There, The clicking sound you describe may be a result of a faulty connection from the battery cable, however this may also happen when the battery is weak (producing a rapid clicking sound). If the clicking sound is more...

Q: My transmission is knocking really hard when accelerating. I can feel it right under my middle console.

This problem is most likely caused by a rapidly failing driveshaft coupling (or "guibo"). These couplings are actually rubber doughnuts, with steel couplings for attachment to the transmission and driveshaft, transmitting power to the rear differential. The rubber portion of...

Q: Possible blown head gasket issue - 2008 Ford F-150

Hello. If it has a blown head gasket it can be quite the undertaking to fix this. You would need to remove the cylinder heads and have them fully rebuilt prior to reinstalling them. If you have a lot of...

Related articles

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...
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 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...