2 engine questions(idle and a rattle)

[Jking72]

1.I remember seeing something on the default idle(RPM) and cant seem to find it, what is the default idle? My car seems to be idling really low in the 200-400RPM range once its warmed up...should I be really concerned?

2.I have a rattle when my car is in drive 4 and a milder rattle in reverse but is non existent in Neutral...any ideas what it could be?

92 canadian ex with 299k

[cloudasc]

1. 650 +/- 50, so 600-700 if my memory serves me correctly.

2a I would check your exhaust manifold heatshield, and the rest of your exhaust system for any loose components.

2b. I would also check the condition of your motor mounts.

[Jking72]

1. 650 +/- 50, so 600-700 if my memory serves me correctly.

2a I would check your exhaust manifold heatshield, and the rest of your exhaust system for any loose components.

2b. I would also check the condition of your motor mounts.

I couldn't get the damn heat shield off because of
A)it hit on the AC line
B)I don't have a O2 sensor wrench...I was trying last night at like 10:30 so I couldn't just go rent one.

I guess I'll have to go pick one up tomorrow when I'm in town, I did search and a lot of people say just wiggle it but it only wiggles so far before the O2 sensor and AC lines get in the way.

on the motor mounts I've only seen the driver side one when I did my timing belt/water pump and seals so I'll have a look at those tomorrow when I open it up again.