mbrando1994
Well-Known Member
- Joined
- May 17, 2015
- Messages
- 274
- Reaction score
- 6
- Year, Model & Trim Level
- 2003 Ford Ex XLT
4.0 V6
I'm having a very faint rattle/chattering noise suspected to be around the left side of the engine more towards the back, but it could possible be in the front. Definitely more prominent on the left (passenger) side. It doesn't sound severe enough to be a timing chain, and it doesn't sound like the flex plate or TC problem many are noting. I first noticed a fast chattering upon hard accelerations where RPMs exceeded 3000. Once dropping down the chattering stops immediately. Now I noticed today while walking around my car while it was running I notice that faint chattering with it just sitting there. Definitely not as loud as it is at 3000 RPM but it's a distinct sort of chitter/chatter noise that has me worried. I have a bank 2 engine code for the catalytic converter system and that's it. That code has been there since I got the car and many mechanics have told me the only way to clear it is to replace with a genuine ford converter assy. which I think is over 1000? Not too worried about the code, but I'm wondering if it could be a header leak? Maybe something else? I don't have the money for a timing job so I'm hoping to god that's not it.