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DISCUSSION => Engine + Driveline => Topic started by: m42mccabe on November 28, 2007, 02:32:40 PM

Title: Startup whine
Post by: m42mccabe on November 28, 2007, 02:32:40 PM

On cold starts I've been noticing a high pitched whine for a few seconds or so. It goes away immediately and I can't hear anything wierd going on when I'm driving. As it's been getting colder the noise lasts longer (5-7sec) but it still goes right away. I'm using Delo 400 15w-40 because my timing chain is fairly worn and I need good lubrication, could that be the cause?
Any ideas would be great.

Title: Startup whine
Post by: 318kid on November 28, 2007, 06:40:32 PM

I dont know whats is wrong but mine makes the same noise. Any help would be great for us.

Title: Startup whine
Post by: Jimmy Lewis on November 28, 2007, 08:16:57 PM

Have you replaced the tensioner? If you haven't pulled your lower pan in a while that probably wouldn't be a bad idea. My car sounded like a lawn mower running on diesel before I replaced my tensioner. That of course was in the summer months, I'm not too keen on the climate in Oregon during November. I ran pretty thick oil in the warm weather, I'm not sure of the implications of running thicker oil in the winter; maybe it is playing a role in your noise.

Title: Startup whine
Post by: teamgtnfx01 on November 28, 2007, 11:14:59 PM

could it be the bendix in the starter

Title: Startup whine
Post by: m42mccabe on November 29, 2007, 12:16:01 AM

Quote from: teamgtnfx01;38554

could it be the bendix in the starter

Is there a way to tell?

How easy is it to fix?

Title: Startup whine
Post by: 2002maniac on November 29, 2007, 10:58:37 AM

It could be a slipping accessory belt.  I always have to tighten my belt when it starts to get colder.

Of course a slipping belt would be more of a squeal than a whine, but onomatopoeia isnt the greatest form of diagnosis. :p

Title: Startup whine
Post by: JHZR2 on December 17, 2007, 10:06:21 AM

a growl at first startup, quieting within 1-2 seconds is the tensioner pressurizing.  A speed related tick would be the lifters.  A tick that gets louder with engine temperature is the injectors.

A whine that is just at the very start, from what Ive seen, is a slightly incorrect adjustment or wetness on the accessory belts.  The alternator is heavily loaded after sitting in the colkd and then doing a cold start... so its putting a lot out.  If the belts are glazed, loose/tight, etc., they will whine a bit.

Check your belts

JMH