Jump to content
SAU Community

Recommended Posts

Hey peeps

I was driving my car tonight, it was quiet cool so I was giving it some now and then, after a long drive on the freeway I stopped and then pulled away, i noticed a very loud sucking/induction noise coming out of the engine bay and a loss of power (but not boost level via boost gauge)... my only thoughts are that it may be loose intercooler piping or something along those lines? It was like a woooooshhhhh as the turbo built a decent amout of pressure

Just a note i just had a dump/front/cat fitted about 3 days ago if that might have anything to do with it...

I will have to go and check things out in day-time wen i have some light outside

Any help would be appreciated!

Thanks all

Jazza

Link to comment
https://www.sau.com.au/forums/topic/110765-help-very-loud-induction-noise/
Share on other sites

leaking BOV perhaps..

either way it would be strange to have something leaking, and still get the same boost level..

also leaks in the pressure side of the engine make them run really crap with AFM based cars.

I did think of bov... but its hooked up after the stock bov so i doubt that would be the case! Ive had intercooler pipes blow off on my last car, i am only guessing this is held on by the factory clips but not quiet on properly so when too much pressure is built up it leaks?

Btw craved ur cars hot lol

haha thanks :P

yeah after my upgrades had alot of issues with cooler piping.

when they come off all together the car stalls out due to the AFM reading a high airflow, so dumps heaps of fuel in...

this is why i mention running bad with a leaky pipe, would be putting more fule in as the turbo is sucking more air in as some is leaking and normal amount is going into the engine (boost reading)

map sensor'd cars dont have this issue since they run off the manifold pressure..

is it happening all the time now? or was it a once off?

I cant say as i drove it for say 2 minutes after i noticed it...

As i said it seems to run fairly normal until it hits some decent boost (10ish psi) and then this howling noise comes outta no where lol

Im pretty sure for that reason something is leaking, the car still makes the same boost levels (just takes more abit rpm) as the leak isn't huge but obviously noticeable...

One of the bearings in the turbo has shat itself, the turbo was inspected for this and thats how they found it! The place i go to is a noted workshop and I have used them for years, plus im not buying the turbo off them anyway lol

Bearing pushs against the compresser cover when coming onto too much boost which causes the horrible noise i hear! Its fine to drive off-boost for awhile until i get a new one but as you mentioned its not to do with the compresser/exhaust wheels on the turbo.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • just an update to this, poor man pays twice  Tried sanding down the pulleys but it didnt do the trick. Chucked another second hand alternator in the na car which I got for free off my mate and its fixed the squelling. Must have been unlucky with the bearings.    As for my turbo car, I managed to pick up a cwc rb alternator conversion bracket + LS alternator for 250 off marketplace, looked to be in really good nick. Installed it , started the car and its not charging the battery.... ( Im not good with auto elec stuff so im not sure if this was all I needed to do but I verified such by using a multimeter on the battery when the engine was running and I was only getting 12.2v )   I had to modify the earth strap for the new LS alternator , factory earth strap was a 10mm bolt which did not fit the bolt on the LS alternator which was double the size so I cut it off , went to repco bought some ring terminals that fit, crimped it onto the old earth strap and bolted it up to the alternator , started the car and same issue. Ran like shit and was reading 12.2 at the battery.  For a "plug and play" advertised kit thats not very plug and play but alas.  My question is , am I missing something ? Ive been reading that some people recommend upgrading the stock 80 amp alternator fuse to a 140 amp but I dont see how that would stop the alternator charging especially at idle not under load.  Regardless ive pulled it out and am going to get it bench tested by an auto elec tomorrow but it would be handy to know if ive missed something silly or have done something wrong.   
    • My wild guess is that you have popped off an intake pipe....check all of the hoses between the turbo and the throttle for splits or loose clamps.
    • Awesome, thanks for sharing!
    • To provide more specific help, more information is needed. What Android screen? What is its wiring diagram? Does the car's wiring have power at any required BAT and ACC wires, and is the loom's earth good?
    • So, now all you need to do is connect the 2 or 3x 12v feeds into the unit to permanent 12v, ACC 12V and IGN 12V that you can find in the spot behind the stereo, and the earth, and then it will switch on with the car.
×
×
  • Create New...