bourgeois1269

Almost every morning when I start my truck I'll get a rattle for about 15 seconds and it goes away. I've looked under the front after start up and it seems to me like it's coming from one of the pulleys. What's the easiest way to find out where this rattle is coming from or has anyone had a similar experience ?

techrep

iTrader: (1)

Pop the hood before start up and stand there gazing at everything while somebody else starts your motor..

bourgeois1269

I've narrowed it down to either the tensioner pulley or the one right below it, bearings might be going out. I'm due for a new belt also (little slack but nothing to worry about) but will be changing it.

bourgeois1269

And with the shifts I'm working at this new job there's really no one up when I head to work

nrivera04

Take the belt off and spin the pulleys by hand.

bourgeois1269

And........ check for a loose pulley ? I do my own work on everything on my truck but haven't messed with the pulleys yet

Martian

When you spin them by hand it should be very easy to feel the one that has bad bearings or has play in it

4.6owner

Also check the AC compressor clutch bearing. They clutch and bearing can wear and rattle.

bourgeois1269

That's wear I'm hearing it come from when I start it up and run to look under the front.

Aeromech

My truck does this and I'm pretty sure it's related to the cam tensioners. Takes them a few minutes to pump up. VCT's I think they're called