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76

Omega General Help / Re: Boom sound like drum once on warm up

« on: 17 September 2010, 20:46:47 »

Well, there is a metal one way valve on the europeon spec cars on the metal pipe mounted in front of the cambelt cover, if you have one of these, check its working (easy to remove) by lowing and sucking through it.

Trouble is, the US emmisions system might be different

In the Uk we just disconnect the SAI pump and then blank of the vac feed to the vac operated valve mounted on the rad.

So I just want to confirm along those lines,

  -  I followed the OOF DVD when changing cambelt and I tested by sucking and blowing (we have the same metal pipe with one way valve), it seems to work as shown in the video
  -  To disconnect the SAI I will just unplug the electrical connector or should I remove the SAI relay in the relay panel under the ECU!  Which is recommended?
  -  To blank the vacuum feed I just need to insert a plastic plug etc., in the vacuum line so there is no vacuum leak
  -  Finally does it have any damaging impact on O2s or Catalytics, exhaust that I should be concerned about

Regards.

77

Omega General Help / Re: Boom sound like drum once on warm up

« on: 17 September 2010, 20:24:25 »

Ok, so it sounds external to the car, sort of front drivers side (as in wrong hand drive US style ) around the wheel area?

Can you disconnect the vac feed to the secondary air injection valve and unplug the blower motor as a test?

Confirmed the sound is coming from the SAI pump area into about 2 1/2 minutes of idle.  From my limited knowledge I believe this is the time that the SAI switches from feeding the fresh air to exhaust (help warm up the O2s faster and emission on start up) to throwing the air out to some other system or into the atmosphere.

Any advice if there is blockage at the pump or any other parts of the SAI setup, etc.

Regards.

78

Omega General Help / Re: Boom sound like drum once on warm up

« on: 15 September 2010, 21:19:28 »

Ok, so it sounds external to the car, sort of front drivers side (as in wrong hand drive US style ) around the wheel area?

Can you disconnect the vac feed to the secondary air injection valve and unplug the blower motor as a test?

I checked it and the following,

  -  It start to have a continuous howl (whooooooooooolwhoo...)
  -  there was no boom

I just reconnected and reseated the pipes around the SAI valve and let it cool down.

Just came from a re-start and no boom and no howl tone.  May be it has not been allowed to cool enough but I will report back later.

I think these cars have a sixth sense and they are scared of your intervention. 

Thanks.

79

Omega General Help / Re: Boom sound like drum once on warm up

« on: 15 September 2010, 17:54:47 »

From what area is it coming from?

See OP first post. 

He says near side....front, rear, middle, engine bay, bumper, interior.....a bit more precise is needed 

Sorry Marks DTM Calibration I will try to clarify below,

It is a boom type sound Left Front and happens almost like a clock after 4-5 minutes in idle as though some system is switching out

Since the sound is little boomy it is hard to exactly know the location and it happens only once

I was thinking it may be related to SAI switching modes and have checked all the clamps and pipes.  I also thought that it may be related to SAI as well as plenum ram changes as RPMs drop from about 1200 on start to 500 and it happens towards and near 500 RPM.

I have checked that it is not related to AC or blower.

If I can clarify further I will be happy to.

Thanks.

80

Omega General Help / Re: Boom sound like drum once on warm up

« on: 14 September 2010, 19:59:42 »

Boom continues once on start with or without filter or ventilation on or off.

Any help and suggestions for a fix or cause.

Thanks.

81

Omega General Help / Re: Boom sound like drum once on warm up

« on: 13 September 2010, 22:30:48 »

When was your pollen filter last replaced?

An old dirty filter can really reduce the quantity of fresh air coming into the cabin.

Maybe the flap has to fight a big pressure difference before it can start to move. :-/

Fitting a new carbon filter should improve the air flow and reduce the need for the flap to operate in the first place.

HTH

Andy H thanks I will check the Cabin Filter.

However, I am going to do a test later by turning all AC and fan off and let it idle and see if the sound is still there.  It uncanningly seems to be related to some valve shutting ( I conjecture Secodary Air Injection system) and creating a vacuum impulse all around.

Regards.

82

Omega General Help / Boom sound like drum once on warm up

« on: 13 September 2010, 18:32:10 »

Once I start my car after about 4-5 minutes of idling, I hear reasonable loud boom sound (just like you will hit a marching band drum once) as though it coincides with the secondary air injection system turning off at around 600-800 RPM.  The car starts normally cold right now around 1200 RPM.

The noise happens only once and never again while driving or restarting when it is already warmed up.

The noise comes from the left side or N/s for UK.  I have checked the clamps, etc., on all the Secondary injection joints.

Thank you.

83

Omega General Help / Re: V6 Bottom Pulley Woes

« on: 16 September 2010, 19:15:37 »

This from UK eBay perhaps the same for you,

http://cgi.ebay.co.uk/VAUXHALL-OPEL-OMEGA-V6-CRANKSHAFT-PULLEY-GM-90-469-392-/350357171392?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item5192ea2cc0

Cheers.

84

Omega General Help / Re: V6 Bottom Pulley Woes

« on: 15 September 2010, 00:40:10 »

I get lots of parts from UK if the seller is willing 

PS:  Andy B any comments or solution for my issue please,

http://www.omegaowners.com/forum/YaBB.pl?num=1284399130

85

Omega General Help / Re: V6 Bottom Pulley Woes

« on: 15 September 2010, 00:18:26 »

Probably the following will fit,

http://cgi.ebay.com/ebaymotors/Saturn-2004-DOHC-3-0-V6-HARMONIC-BALANCER-BELT-PULLEY-/270629714983?pt=Motors_Car_Truck_Parts_Accessories&hash=item3f02c9bc27

Cheers.

86

Omega General Help / Re: help me identify an object in the cooling system

« on: 15 September 2010, 23:56:29 »

That is what I got in my Catera too.  Cheers.

87

Omega General Help / Re: help me identify an object in the cooling system

« on: 15 September 2010, 21:24:09 »

OK, I have no problem with binning it, if it does no good. But, if I get rid, I will lose the heater function when engine stopped, surely? I have used this Winter pack "toy" on one or two occasions, and don't want to rip out useful parts only to lose spec.

Wow I did not even know it has function.  I always kept my engine running while temporarily parked to keep warm in winter!

Thanks.

88

Omega General Help / Re: help me identify an object in the cooling system

« on: 15 September 2010, 20:43:01 »

Its part of winter pack. Its a small pump that runs independently, allowing heat in the (stopped) engine to circulate to the cabin.

That facelift only isn't it Jamie?  :-/

The facelift one works more as you would expect it to. Prefacelift needs ign on = flat battery in no time.....

just as well there's only one electric water pump on the rad on mine .... 

From across the pond it appears as Part Number 1 on the Omega sister,

http://www.compnine.com/index.php?u=1&year=1997&artnbr=OV01-002&artsfx=NULL&supplgroup=NULL&catcode=65V&modelcode=V&makecode=K&modelseries=VA&uid=1&modelid=1147577585&capuid=1&majorgroup=01&grouptype=B

Cheers.

89

Omega General Help / Re: Urgent Advice Please

« on: 15 September 2010, 21:39:47 »

Well it seems the panic is over .
Some nice clean pipes arrived today courtesy of Omega Spares .
I dont have the equipment to allow me to get the car high enough to check the ATF level but it appered i caught it as soon as the leak started .
Just been for a run and all seems fine .
I will get the level checked somehow but seems fine just now 

Have a good vacation

90

Omega General Help / Re: Urgent Advice Please

« on: 13 September 2010, 06:09:40 »

Can anyone with EPC check the part number of these pipes from the top of the radiator to the black pipes please ...i dont know what they would be called unfortunatley 

If it helps,

http://cgi.ebay.com/VAUXHALL-OPEL-OMEGA-AUTO-GEARBOX-OIL-COOLER-FLUID-PIPES-/350300515434?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item518f89ac6a

Cheers.