Squealing noise

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  #1  
Old 02-11-05, 01:23 AM
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Unhappy Squealing noise

We recently bought a 2001 Pontiac Grand Prix GT automatic 3.8 V6 engine code K 3800 Series 2 motor. When we test drove it everything was fine we loved the car so we bought it. After we drove it about 100 miles the low oil light came on and the car started making a very small intermitten squealing sound like a belt sqealing. So we got the car home and checked the oil and discovered it was about 3/4 of a quart low so we added the oil and the squealing became worse (louder and more frequent but still coming and going). So we assumed it was the belt and replaced it with a new one. That didn't help so we removed the belt altogether and started the car still squealing. Also while the car is running if you start to pull off the oil cap the squealing becomes constant and seems to be coming from deep inside the motor or maybe underneath, can't tell. My husband tested the intake to make sure that was not the problem and the intake was fine so that's not it. So we put the new belt back on and drove the car about another 3 or 4 hundred miles and the low oil light came back on and the squealing deminished. So we are really puzzled by this whole thing if anyone could help we would be most grateful since this is our only vehicle and we really need it. Thanks so much.
 
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  #2  
Old 02-11-05, 04:10 AM
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Location: Pittsburgh,Pa
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Remove the top engine cover and looking at the front of the engine right above the water pump in the upper intake(black in color) you will see a wiring connector.Disconnect that and rotate the part below it not the sensor itself.This will expose the pcv valve take pliers and remove the valve and check for the o-ring that seals the bottom of the valve it will be missing.Replace the o-ring.There are 2 o-rings a large one that seals the cap for the valve and a smaller one that seals the valve.Replace the o-rings and valve with new GM parts and your problem will be solved.Did you change the pcv valve yourself?
 
  #3  
Old 02-11-05, 12:13 PM
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Talking

We had a Chilton book and it showed everything exactly as you said. So we went to our local GM garage and they said the PVC valve didn't even call for an o ring on the valve it called for a grommet. So my husband informed them that you said it had an o ring and so did the book. So he made them find an o ring to put on the valve anyway. We came home and took off the map sensor like you said and someone had removed the PVC valve altogether! So we installed the valve we had and it seems to have solved the problem. So now we were wondering is there any reason why someone would take the valve off? We would really like to thank you for your help it was much needed and much appriciated.
 
  #4  
Old 02-11-05, 02:48 PM
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Location: Pittsburgh,Pa
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If someone changed the upper intake plenum the valve may still be in the old one I don't know.I think your problem is solved though especially if the valve was missing and your oil consumption should go down also.It was a pretty cheap repair for you doing it yourself also.Glad to help now you know where to send your freinds for advice.
 
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