J-Spec

There's a rattling noise coming from the engine bay, it seems like it's coming from the back of the engine, close to the firewall. I want to know if anyone else with a 240 has come across the same noise and what might be causing the rattle. Any help will be greatly appriectated.

Greaser

check your ac line, make sure its still bolted down.

J-Spec

I'll check that, but also check this...It doesn't make the noise when it's in park. It only does it when the lights are turned on and when it's either in reverse or drive.

Greaser

Engine load is high when lights are on or in park/drive. check alternator for noise.

Spindrift

It's your heat shields, take them off and youll have no more rattling.

J-Spec

It was the heat shields, I took the ones off that covered the cat and the part that covered the piping that comes from the exhaust manifold. Now it's silient, no more rattling. Thanks for the help.

Spindrift

works everytime