Branners Posted August 9, 2004 Share Posted August 9, 2004 On a UK spec car (so steel internals on the turbos) what could make a 'woooooo' noise when the second turbo comes on line? Im 99% sure the turbo has gone as it wont hold boost either but I want to check everything else before it heads off for any turbo work. The car has 125,000 miles so the turbos are near the end of their life... JB Quote Link to comment Share on other sites More sharing options...
Barry Posted August 9, 2004 Share Posted August 9, 2004 What do you mean wont hold its boost? And is the noise a constant wooooooo! Do you get any blue smoke out the exhaust when the 2nd turbo should come in? Quote Link to comment Share on other sites More sharing options...
Branners Posted August 9, 2004 Author Share Posted August 9, 2004 no blue smoke out the exhaust, yep, its a wooooo as soon as the second turbo comes on line, first turbo is fine. When the second turbo comes on line the boost wont go any higher. Turned it to ETTC and the wooo came on as soon as the boost was being made so its second turbo related.. JB Quote Link to comment Share on other sites More sharing options...
Barry Posted August 9, 2004 Share Posted August 9, 2004 Hmmmm!? It could be that one of the VSV's isnt opening and the build up of pressure in the vacume hose has nowhere to go (hence the wooooo noise! - Has to force its way out somewhere!). Have you checked the pipe work for the boost controller is all still attached? How did you first notice it, did #2 come online then just go??? Quote Link to comment Share on other sites More sharing options...
Rob22 Posted August 9, 2004 Share Posted August 9, 2004 could be that the actuator is shot if its not closing when it should then you will get no extra boost as for the noise well it could that the turbo is dead aswell i had both go and the heat build up near the waste gate cracked the surrounding metal on my T3 do the best thing and at least get it checked it dont take long to find out if its out of date aslong as your mechanic knows what to look for and it could just mean a reacon which is far cheaper than a replacement peice. Thinking about it you should be able to see the actuator arm move when it comes on boost get your head under the bonnet and give it a few revs (maybe quite alot)then you should see the arm move. Quote Link to comment Share on other sites More sharing options...
Barry Posted August 9, 2004 Share Posted August 9, 2004 Originally posted by Rob22 Thinking about it you should be able to see the actuator arm move when it comes on boost get your head under the bonnet and give it a few revs (maybe quite alot)then you should see the arm move. The only way your going to see any boost without the car moving is on a rolling road. You wont see any boost just by reving the engine at standstill! Quote Link to comment Share on other sites More sharing options...
Willson Posted August 9, 2004 Share Posted August 9, 2004 Sounds exactly like the death wine. http://www.mkiv.com/techarticles/death_whine/death_whine.wav Quote Link to comment Share on other sites More sharing options...
Branners Posted August 10, 2004 Author Share Posted August 10, 2004 yep, thats the one. I heard that file many years ago and I was just clutching at straws that it might be something else...I have a set of import spec turbos lined up (yes, I just need to lose those dildos and fit the import rear lights and Im almost there..) so Im going to have to change the turbos. I will try and get a picture of what failed on them when they come off. JB Quote Link to comment Share on other sites More sharing options...
BigRoy Posted August 10, 2004 Share Posted August 10, 2004 Do I win the race for the most miles on UK tubs at 1.3 Bar? Quote Link to comment Share on other sites More sharing options...
Branners Posted August 10, 2004 Author Share Posted August 10, 2004 well mine made 12,000 miles before going pop, but then they did have 113,000 on them when I turned the boost up. JB Quote Link to comment Share on other sites More sharing options...
BigRoy Posted August 10, 2004 Share Posted August 10, 2004 Mine had 110K and now stand at 124K within a year! Must buy a diesel:) So that means I have 1K left of M25 to raise enough money for a single Quote Link to comment Share on other sites More sharing options...
Rob22 Posted August 12, 2004 Share Posted August 12, 2004 Originally posted by Barry The only way your going to see any boost without the car moving is on a rolling road. You wont see any boost just by reving the engine at standstill! Iam only trying to give the lad a few pointers and btw i would be willing to put money on the fact you CAN make the car boost standing trust me ive done so. Quote Link to comment Share on other sites More sharing options...
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