Q: Car starts up fine after 15 mins it starts pinging/ticking very loud

asked by on

Hello ive been working on a friends car for the past 2 weeks it all started with an o2 sensor (driver side) getting replaced the cel light didnt go off and the pinging started it has never done that since my friend owned the car over 3 years now. I told him to go to autozone to get it checked out again and to look for more codes. He came back and told me that the car started misfiring and same code for o2. We changed the spark plugs, and the other side of the o2(passenger). Then the cel went off we were glad that was over but the pinging hasnt gone away. He changed one side of the camshaft sensor (drivers side) with an is350 part and it didnt ping as he says i wasnt there but he had to put the sensor back in his sisters car so we went and got a cam position sensor. pinging Still hasnt gone away told him dont recommend driving the car but he has places to go has no choice he comes back to tell me the car sounds rough and drives rough i need advice feels like im at fault. What do i do

My car has 155000 miles.
My car has an automatic transmission.

Hello there, pinging can become a serious engine problem with your 2007 Lexus GS350. You have done well so far in diagnosing this problem, but the root cause still remains.

If the sensors have been replaced than the issue is with the engine itself not the sensors. The most likely causes for engine pinging are a lean condition, excess carbon buildup, vacuum leaks, exhaust leaks, ignition timing advanced, or an overheating engine.

At this point the best bet would be to have the vehicle diagnosed professionally before any more parts are replaced. A qualified technician such as one from YourMechanic will be able to diagnose the rough running and pinging issues and make any repairs required.

Until the problem is resolved the vehicle should not be driven, as it can become damaged by the pinging, also called pre detonation.

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. Car starts up fine after 15 mins it starts pinging/ticking very loud

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: Where is the grinding noise coming from?

Hello. If this only occurs in one direction, then I usually check inside of the fender well for shinny spots. If there are any shinny areas, that would mean that there is something rubbing, such as the tire rubbing. If...

Q: My dashboard is falling apart

You are not alone in having issues with plastic parts of the interior or exterior of GM vehicles. The cracks in your dash panel and door handles breaking are common and no recalls were found for any of the trim...

Q: What does the Engine Overheated -- Idle Engine message mean?

The Engine Overheated – Idle Engine message can appear on your driver information center (DIC). When the DIC displays this alert, your engine is too hot to drive safely. You should stop your car as soon as possible and let...

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...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...