Hi everyone. Wondering if anyone has experience that could help me figure something out that's bugging me. I have a 97 Sierra 1500 with the 4.3 / Automatic transmission. When the engine is hot and I am in drive, foot on the brake and idling, I hear a ticking noise as shown in this video:
Video
I am wondering if it might be a rod knock, lifter tick, exhaust leak, or flexplate/torque converter issue. The only time this is noticeable is when it is in gear and idling. It is quiet and smooth sounding when the engine is not hot. Does anyone have any advice? I also do notice a loud rattling noise at times when rolling coming under the truck that I initially thought was the catalytic converter. I have no drive ability issues otherwise, just afraid I'm going to blow my engine if I keep driving it. Thank you.
Video
I am wondering if it might be a rod knock, lifter tick, exhaust leak, or flexplate/torque converter issue. The only time this is noticeable is when it is in gear and idling. It is quiet and smooth sounding when the engine is not hot. Does anyone have any advice? I also do notice a loud rattling noise at times when rolling coming under the truck that I initially thought was the catalytic converter. I have no drive ability issues otherwise, just afraid I'm going to blow my engine if I keep driving it. Thank you.