Hi Guys,
I have been facing few problems with my Japanese Corolla 2003 G edition( Manual 38,000 kilometers driven) for sometime. Let me elaborate the problems point wise:
- Every time i start the car the RPM hits around 2800 and then it comes down in few minutes to about 1000. I understand if its a cold start in the morning then it is fine but even driving for about 100 kilometers and then after about 10 minutes starting the car again hits more than 2000 and take at least two minutes to come to 1000 rpm. I am unable to understand why it always starts up like a cold start in the morning even when the engine is fully warmed up.
- Second, the engine makes a strange heavy sound. Even when the engine idles at neutral one can still fell the vibration in the cabin ( and with AC turned on the vibration is much more prominent. My mechanic checked motor mounts which were fine. He advised me that it was the intake manifold that was making the sound. So i went ahead and change the intake manifold and carefully installed the inlet manifold gasket( ensuring no leaks are there),however, the sound still exists and with AC switched on the engine sound like an old diesel engine. Its a pretty much new car only 38,000 kilometers driven.
Please guide and help me in resolving these problems.