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1

Car Parts, bits For Sale & Wanted / Wanted: V6 Air conditioning Compressor - Rebuilt

« on: 23 June 2012, 17:28:18 »

Hi, looking for a newly rebuilt A/C compressor for my 3.0V6.

Mine leaks and I would rather buy a rebuilt OEM than an ebay one.

2

Omega General Help / Re: V6 Engine "whine" help

« on: 04 March 2012, 21:53:11 »

The two favourites for making a whine noise are the alternator or the aircon, the tone often changes when the aircon is turned on off.

With the belt off, spin the alternator pully and listen for a rough noise. If it is the alternator, its pretty easy to remove and if your fairly compitent, the bearings can be changed without to much trouble.

I spun the alternator pully when I had the belt off, but it felt pretty smooth and I couldn't hear any noise.  I couldn't spin it too fast by hand though..

The aircon system does not hold refrigerant for more than a few months, so right now the system is dry, so I cannot switch it on or off. A shop told me it is leaking from the compressor.  Could this be a sign that the compressor is the culprit?  The noise sounds like it is coming from the other side of the engine though..

3

Omega General Help / Re: noisey tensioner/idler and window tint

« on: 04 March 2012, 20:49:52 »

Hi Will,

Sorry to hijack your thread but..

I am having a similar problem with my 3.0 and was wondering if the noise that yours made was the same as the video in my thread (in first post) : http://www.omegaowners.com/forum/index.php?topic=98802.0

I am having a tough time trying to diagnose it so any help would be appreciated 

Also, how much play was in the waterpump?  Could you see the pulley move when you wobble it, or just feel it?

4

Omega General Help / Re: V6 Engine "whine" help

« on: 04 March 2012, 20:19:43 »

UPDATE:

I finally had some time to mess with the car in good weather.

With the serpentine belt off, no noise at all when running, so its not from behind the cambelt cover.

All accessory pully's feel tight when I wiggle them, but there is the slightest amount of play in the waterpump pulley when I try to wiggle it.  Not enough that you can actually see, but I can feel a very very slight wobble, not sure if normal or not. Waterpump replaced with aftermarket pump last year.

I listened to the tensioner pulley through a screwdriver and it did sound a bit noisy, so I tried swapping out for a new one but still the same noise.  So it's not the tensioner pulley.

Not sure if related or not, but last week I had a few slow starts, where there is a hesitation for the engine to get cranking powerful enough, but still started right up.  Had the battery and alternator checked with a handheld diagnostic tool, but all is supposedly within spec. Haven't had any issues since..

Now I am trying to determine how to diagnose whether it is the waterpump or the alternator...any suggestions?

thanks 

5

Omega General Help / Re: V6 Engine "whine" help

« on: 29 January 2012, 23:42:30 »

use a long extension bar or screwdriver, put it on the bolt of tensioner with engine running and put ear to bar, if it the pully the sound will travel up it, if not all be quiet apart from the normal pully noise

^^ I meant to do this earlier, just did not have a long enough bar or driver handy. I have seen that this is a good trick, but can sometimes be deceiving if the noise travels through metal. Good tip nonetheless.

Andy B- just making sure we are all paying attention right?    thanks for the tips!

Hotel- sorry if my post was confusing, I probably could have used better words 

Anyways, it's dark here now and I don't have a garage or anything.  I have work tomorrow but am off Tuesday, so will try to pinpoint the whine then 

Crossing fingers problem is not behind timing cover, I hate doing the same job twice in one year! 

6

Omega General Help / Re: V6 Engine "whine" help

« on: 29 January 2012, 22:54:58 »

You've definitely got a whine!!!!!!!!! 
First off, remove the auxiliary/fan belt. If all is quiet, you can then disregard the alternator, water pump, air/con pump & belt tensioner. If it's still as bad, the you need to look at the cam belt tensioner & idler bearings.

NB Don't run your car too long without the aux belt - it drives our water pump. 

I figured that I would need to run it with the belt off, thats what I will do next.
Andy I know what you meant to say, but is backwards right? If auxiliary belt is off, and all is quiet, then the whine is from an auxiliary system. 

7

Omega General Help / V6 Engine "whine" help

« on: 29 January 2012, 22:31:06 »

3.0 V6 started a constant whine when running.  The sound only changes with engine speed (gets louder as engine rev's higher). Turning the wheel or turning on accessories and putting more load on alternator does not change the sound so I think I can rule out alternator and p/s pump.

Sounds like it is coming from the right side of the engine (my passenger side, your driver's side), sounds like the area of the tensioner pulley (replaced 12k miles ago), but I am hoping that it's not coming from behind the timing cover or the waterpump.  Hard to tell. Timing kit and w/p all done at 12k miles ago as well.

I took a quick video of the engine running, and the sound is pretty distinct so I am wondering if anyone has heard a similar noise and might know what the culprit could be? Any suggestions? Thanks

View My Video
or:
http://tinypic.com/r/hwj19t/5

8

Car Parts, bits For Sale & Wanted / Re: Cam Covers Wanted - 3.0L V6

« on: 26 January 2012, 16:50:49 »

Got a set purchased from here, thanks guys.

Mods, please lock if possible!

 

9

Car Parts, bits For Sale & Wanted / Re: Cam Covers Wanted - 3.0L V6

« on: 25 January 2012, 22:06:46 »

All messages replied

10

Car Parts, bits For Sale & Wanted / Re: Cam Covers Wanted - 3.0L V6

« on: 18 January 2012, 15:48:41 »

I have a set from a 1999 3.0 laid about, if you forward your e-mail I can forward a couple of photos 

Message sent, thanks 

11

Car Parts, bits For Sale & Wanted / Cam Covers Wanted - 3.0L V6

« on: 17 January 2012, 00:33:21 »

I need a set of cam covers for my 3.0L v6, and would need them shipped to the U.S. if anyone is interested in helping me out!! Would pay with paypal.

I have a 98 Catera, so my engine is pre-DBW, with a regular coil pack (non-coil over plug); a pre-facelift. One of my cam covers is damaged on one edge and brittle so I suspect the other isn't far off..

Please let me know if anyone can help, pictures would be appreciated!

-Patrick

12

Omega General Help / Re: Auxiliary water pump/coolant hose diagram/part #'s?

« on: 12 December 2011, 03:11:30 »

http://www.genmotorinfo.com/Picture.aspx?ccId=461290692&ppId=125628716&ppInfo=1997-2001+V%2cEngine+Cooling+System%2cRadiator%2cHoses+%26+Electric+Fan+-+OV01002
http://www.gmpartsgiant.com/Page_Product/PartDetail.aspx?modelYear=2001&model=Catera&make=Cadillac&catalogCode=65V&modelCode=6VR69&seriesCode=6VR&bodyStyleCode=69&engineCode=L81&transCode=ML4&majorIndexID=01&isBigPicture=False&isDisplay=False&seeDesc=true&minorIndexID=OV0100201

Thanks Rob, that should get me started 

13

Omega General Help / Re: Auxiliary water pump/coolant hose diagram/part #'s?

« on: 11 December 2011, 19:43:32 »

dont know about a diagram  but gates list all the seperate hoses 

http://www.car-stuff.com/mmparts/cadillac-catera/radiator_hose.html

thanks for the info, would feel better with a diagram, maybe someone else has seen one?

oh and it is a 3.0L just to be clear for everyone else.

14

Omega General Help / Auxiliary water pump/coolant hose diagram/part #'s?

« on: 11 December 2011, 19:03:59 »

I have searched but cannot find what I am looking for...

I need a diagram, hopefully with part numbers, that has the coolant hoses associated with the auxiliary water pump that is mounted on the radiator.  One of the small hoses from the radiator is leaking and I want to make sure I buy the right ones.

Anyone know of a diagram out there?

Thanks

15

Omega General Help / Re: Thermostat ???

« on: 30 October 2011, 14:51:14 »

A good indication that the thermostat is stuck open is if you feel the temp of the large hose to the top of your radiator. It should get warm in one go ie as the 'stat opens, but if it slowly warms up as the engine warms up, then it's likely the 'stat needs changing.

Agreed.

As a general rule, if I get into my car and drive it from a cold start, after a mile the temperature gauge is off the minimum and it's fully warmed up in another mile or two.

My thermostat failed recently and, while there was no sign of coolant flow from cold, it used to run well under the "mid-gauge" point unless in traffic.

On a 2.6 dash, I would regard 85-90 indicated on the gauge as the normal range of temperatures if the thermostat is OK. Mine was previously showing 75-80 unless in traffic.

The job is actually not as bad as it seems, IMHO. There's a bit of stripping down to get to the thermostat but it wasn't as bad a job as I expected to just change it. The key is to follow the guide (and watch the videos if you can stomach some seriously bad music and heavy breathing). http://www.omegaowners.com/forum/index.php?topic=90647.0

Now I am just kicking myself because when I first got the car, I replaced the cam belt kit, radiator, and cam cover seals, but did not dig the thermostat out at that time--I was planning on replacing it the next go around, when I would do the engine oil cooler too (mine isn't leaking, I had just heard it's a common failure on the earlier 3.0's).

So I better find some time to do the oil cooler and t-stat before it gets too cold here