Hello, I have Chevy Sonic 2015, 1.8 L engine, 103600 miles. Even tho I have a huge desire to set it on fire and be done with it, I absolutely HAVE to fix it. Nightmare started month ago.
Issues: stalling, rough idle, dying at the stop light
No engine light, current 2 codes: P0506, P0132
Replaced parts:
spark plugs,coil,
throttle body,
fuel pump,
pvc valve and cover,
fuel injectors
cleaned maf sensor
Each time after replacement car drives perfect for a day and the very next day stalls at start.
both O2 sensors were replaced 6 months ago
Note: I've noticed that my ignition timing at idle is all over the place: bouncing from -6 to 6. Could it be timing belt or cam gears issue?
Thank you!
Note: I've noticed that my ignition timing at idle is all over the place: bouncing from -6 to 6. Could it be timing belt or cam gears issue?
Yes. How old is the timing belt? It looks like the factory maintenance schedule for that car calls for changing the belt, idler pulley, and tensioner every 3 years (!) or 97,500 miles, whichever comes first.
Thank you! Unfortunately, its not the easiest task.Is there any way to test it, to know for sure that timing belt is an issue?
You could physically examine it for wear. However even if it is not the cause of your problem it is overdue for replacement. The way your timing is jumping around there's not much doubt it needs to be done. A quick search indicates that's an interference engine, so if the belt breaks it's goodbye engine.
Thank you!
You might want to do a compression test to see if you're fighting a worn-out engine before doing any major work. If compression is bad nothing else you do is going to help. Those are not exactly the most durable cars around.
I looked up timing belt and they are sold separately and as a kit with a water pump. Is there a reason why they sell kits?
The water pump is probably driven by the timing belt. That being the case, if the water pump were to seize up it would snap the timing belt so it is a good idea to replace that as well. (It is best to stick with OEM parts.)