check engine light came on and loud squeel
Thread Starter
MBWorld Fanatic!
Joined: Oct 2002
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check engine light came on and loud squeel
Gents,
Can you provide any quidance? I was out and about this am and while heading home my check eng light came on and upon shutting down the car a loud squeel came from under the hood.
Car is dirving strong as i did get on it a few times as I was driving home from my sons school and from AJ's -(getting her cleaned up for the weekend)
i of course immediately called my SA at the dealership and have not heard back - (big shock) -
Any of you have this happen to you?
Best
Mike
Can you provide any quidance? I was out and about this am and while heading home my check eng light came on and upon shutting down the car a loud squeel came from under the hood.
Car is dirving strong as i did get on it a few times as I was driving home from my sons school and from AJ's -(getting her cleaned up for the weekend)
i of course immediately called my SA at the dealership and have not heard back - (big shock) -
Any of you have this happen to you?
Best
Mike
Thread Starter
MBWorld Fanatic!
Joined: Oct 2002
Posts: 3,083
Likes: 88
all belts look good - it sounds like a gate that needs to be lubed is the only way to describe the sound - after shut off its like a squeal that lasts 2 seconds - dealer called me back and its going in on tuesday - said it may be a vacuum leak of some sort - its drives fine, just sounds like something is wrong - needles to say its parked til tuesday - and just got it out of the detail shop too 
Senior Member
Joined: Jul 2009
Posts: 385
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From: Arroyo Grande, CA
w205 C63s, w212 E63,w219CLS500-SOLD! w211 E63, 2006 E60 M5 (KABOOM!)
Start the car, let it run for a minute and pull the dipstick. Then shut the car off with the dipstick out. I am willing to bet you wont hear the noise. It sounds to me like your purge vent valve is toast. It sits behind the intake manifold. This is an easy way to diagnose it. The valve fails and crankcase pressure builds up. The noise you hear is the pressure bleeding off through the stuck valve.
Thread Starter
MBWorld Fanatic!
Joined: Oct 2002
Posts: 3,083
Likes: 88
Start the car, let it run for a minute and pull the dipstick. Then shut the car off with the dipstick out. I am willing to bet you wont hear the noise. It sounds to me like your purge vent valve is toast. It sits behind the intake manifold. This is an easy way to diagnose it. The valve fails and crankcase pressure builds up. The noise you hear is the pressure bleeding off through the stuck valve.
thanks illl give it a try - i have parked the car since the noise has happened - but will give it a try this morning.
