Guest SuperProperty Posted September 23, 2006 Share Posted September 23, 2006 Took my UK TT auto for a drive today and after around 15 minutes during accelaration had sudden power cut, revs went down to about 2000 (and I heard like a pat sound) After that was trying to accelarate but the revs are not going above 2K ! Basically feel a power cut on 2K, nothing happens even u press accelarator dow to the floor. Sometimes if you accelarating very gently it goes to 2.5-2.6K, but still doesn't feel like normal power and again cuts there. Not sure if the first turbo comes up, sometimes I hear the turbo whistle at 2-2.2K, sometimes not. Also when it stays on neutural revs ate not stable even with the air con swithched off, arrow goes between 500-700. What can it be? Hope not a turbo Had a full decat recently, but no boost controller installed yet and no fuel cut defencer (planned to do both this week) Use to drive her on high speeds with 5,000+ revs & had no probs Link to comment Share on other sites More sharing options...
Pig Posted September 23, 2006 Share Posted September 23, 2006 Not had this before. You got a error (red triangle) on your dash? It sounds to me like a turbo poss, would check all your pipes 1st though! Link to comment Share on other sites More sharing options...
Guest SuperProperty Posted September 23, 2006 Share Posted September 23, 2006 Not had this before. You got a error (red triangle) on your dash? It sounds to me like a turbo poss, would check all your pipes 1st though! no red triangle, nothing Link to comment Share on other sites More sharing options...
Pig Posted September 23, 2006 Share Posted September 23, 2006 Hmmm, is the car smoking lots? As if a tubbie is gone there would be smoke. AFAIK Link to comment Share on other sites More sharing options...
Guest SuperProperty Posted September 23, 2006 Share Posted September 23, 2006 Hmmm, is the car smoking lots? As if a tubbie is gone there would be smoke. AFAIK there are some black smoke I found on the bumper where the exjaust is But havn't seen smoke whilst the engine is running Link to comment Share on other sites More sharing options...
Marty Posted September 23, 2006 Share Posted September 23, 2006 Sounds to me like you've lost pressure in your turbo system, in other words a boost pipe has come off, or split somewhere. it happened to me when i installed my blow off valve, i accelerated, there was a noise and that was it, car wouldnt rev, i thought id wrecked it, turned out to be a boost pipe. 1st thing id do, is check them all, chances are one has slipped off, hopefully not from somewhere awkward like your cooler. If it was a turbo, you'd know about it, smoke, etc. Link to comment Share on other sites More sharing options...
Kranz Posted September 23, 2006 Share Posted September 23, 2006 Yep, some hose between the turbos and the inlet manifold has probably let go. I expect its a J spec, isn't it? If it was a UK spec it'd be smoking like a bi*ch. The engine is seeing very little air going into the manifold, so isn't fuelling much... that's why you have no power. The 'phat' noise you heard was the hose blowing off. Find it & stick it back on. Link to comment Share on other sites More sharing options...
Guest SuperProperty Posted September 23, 2006 Share Posted September 23, 2006 Yep, some hose between the turbos and the inlet manifold has probably let go. I expect its a J spec, isn't it? If it was a UK spec it'd be smoking like a bi*ch. The engine is seeing very little air going into the manifold, so isn't fuelling much... that's why you have no power. The 'phat' noise you heard was the hose blowing off. Find it & stick it back on. thx guys It is UK spec Auto Just went back to my garage to double check - no smoke Revs are bit unstable on N (aircon off) Checked the pipes visually but I'm not technically minded so couldn't find the fault. But good sign is that there is no smoke. Is it safe to drive her to the garage for a proper check? I recon it is about 15-20 miles Link to comment Share on other sites More sharing options...
Kranz Posted September 23, 2006 Share Posted September 23, 2006 If its Uk spec it has a Mass Air Flow meter, which means it will throw as much fuel in as it needs based on the air being pulled through the MAF. Trouble is that most of the air being measured is probably chuffing out of a hose somewhere, so its chucking shed loads of fuel in with no air... Wouldn't drive it far, but it will drive. Just try and keep it off boost if you *HAVE* to drive it. Best to get the mechanic round to you?? Link to comment Share on other sites More sharing options...
Guest SuperProperty Posted September 23, 2006 Share Posted September 23, 2006 Wouldn't drive it far, but it will drive. Just try and keep it off boost if you *HAVE* to drive it. Best to get the mechanic round to you?? thx a lot I was driving her back home for couple of miles only trying not to reach 2000rpm Guys, is there are any mechanics or technically minded people around North West London? I'll pay for the visit obviously Otherwise will have to drive her yo Whifbitz which is about 17-18 miles from me...Or will have to call AA to arrange the track Link to comment Share on other sites More sharing options...
Marty Posted September 24, 2006 Share Posted September 24, 2006 Dont drive it that far mate, if you are struggling to find the pipe, and are a member of the aa. Drive it down the road, then ring the aa up, and let them find it Link to comment Share on other sites More sharing options...
Guest SuperProperty Posted September 25, 2006 Share Posted September 25, 2006 Looks like we found the problem. Local mechanic said that it is Mass Air Flow meter's sensor Any ideas how much the sensor itself cost? Link to comment Share on other sites More sharing options...
Bob Posted September 25, 2006 Share Posted September 25, 2006 quite a lot, if memory serves. I would still hazard a guess at a hose blown off or split, possibly making it seem like it's the MAF. In my experience (limited though it may be), it's very unusual for a MAF sensor to die. Link to comment Share on other sites More sharing options...
Guest SuperProperty Posted September 25, 2006 Share Posted September 25, 2006 the thing is - when the car is on P or N, engine works almost fine (sometimes revs are going up & down a little bit) can rev it till 4-5K without any probs & engine sounds is OK but no power when u drive also checked all pipes - can't see any splits etc blocked the silencer for a second - nothing coming up from under the bonnet Link to comment Share on other sites More sharing options...
Marty Posted September 25, 2006 Share Posted September 25, 2006 I think he's wrong too, the split hose would make it look like a damaged maf sensor. I have one i could sell you if it turns out to be this, i have taken it off my car as i do not need it any more since going singe let me know. Link to comment Share on other sites More sharing options...
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