Loss of boost

jtaw45 · Jun 7th, 2021, 09:57

While driving yesterday i had a strange noise and it resulted in a the engine service light coming on and reduced performance. I nursed it home with no boost at all. I pulled the following coeds from it when i got home. ECM135F AND ECM1507. After a reset i can drive the car with what sounds like a boost leak, i haven't driven it hard enough to bring the service light on again. Any suggestions on where to start looking would be welcome please.

SwissXC90 · Jun 7th, 2021, 14:40

Check the charged air pipe from turbo all the way to the intercooler and on to the inlet manifold.
Look for splits / cracks / hose clamps having fallen off etc.

Check also the intercooler for leaks

The best way to do a leak test is with a smoke test machine.

But the poor mans way is a second person revving the engine while you look under and around the motor following the charged air pipe and looking / feeling for air leaks.

Watch your hands around moving parts!

jtaw45 · Jun 7th, 2021, 16:24

Thanks, i've had a look and can't see or hear anything from underneath. Booked in for a smoke test tomorrow.

S60D5-185 · Jun 7th, 2021, 19:12

Take the undertray off and check those boost pipes p[articularly the orange seals on each end of resonator. You can't examine them with tray in place.

jtaw45 · Jun 8th, 2021, 20:43

Bang on, Had it smoke tested, it was indeed the seals on the resonator box. New one ordered and fitted at the garage today. Pick it up tomorrow.

Jun 7th, 2021, 09:57	#1
jtaw45 Senior Member Last Online: Feb 13th, 2024 10:42 Join Date: Dec 2004 Location: Hull	Loss of boost While driving yesterday i had a strange noise and it resulted in a the engine service light coming on and reduced performance. I nursed it home with no boost at all. I pulled the following coeds from it when i got home. ECM135F AND ECM1507. After a reset i can drive the car with what sounds like a boost leak, i haven't driven it hard enough to bring the service light on again. Any suggestions on where to start looking would be welcome please.

Jun 7th, 2021, 14:40	#2
SwissXC90 Premier Member Last Online: Mar 20th, 2024 18:26 Join Date: Jan 2016 Location: Cross Country	Check the charged air pipe from turbo all the way to the intercooler and on to the inlet manifold. Look for splits / cracks / hose clamps having fallen off etc. Check also the intercooler for leaks The best way to do a leak test is with a smoke test machine. But the poor mans way is a second person revving the engine while you look under and around the motor following the charged air pipe and looking / feeling for air leaks. Watch your hands around moving parts! __________________ XC90 R-Design MY2009, Black Sapphire Metallic. HP-Sound, RSE, Nav, Tel, ParkingCam, BLIS, ParkingHeater, RestHeat, Removable Towbar, Summer: CRATUS 20x8 on Pirelli Scorpion Zeros 255/45, Winter: NEPTUNE 17x7 on Continental WinterContact 4x4 235/65.

Jun 7th, 2021, 19:12	#4
S60D5-185 Me ? Surely Not! Last Online: Apr 5th, 2024 16:23 Join Date: Jul 2010 Location: 2007 Volvo XC90 D5 Geartronic. South of Hadrians Wall.	Take the undertray off and check those boost pipes p[articularly the orange seals on each end of resonator. You can't examine them with tray in place. __________________ “Do the right thing. It will gratify some people and astonish the rest.” – Mark Twain 😊 2007 Volvo XC90 D5 SE Geartronic

Jun 7th, 2021, 16:24	#3
jtaw45 Senior Member Last Online: Feb 13th, 2024 10:42 Join Date: Dec 2004 Location: Hull	Thanks, i've had a look and can't see or hear anything from underneath. Booked in for a smoke test tomorrow.

Jun 8th, 2021, 20:43	#5
jtaw45 Senior Member Last Online: Feb 13th, 2024 10:42 Join Date: Dec 2004 Location: Hull	Bang on, Had it smoke tested, it was indeed the seals on the resonator box. New one ordered and fitted at the garage today. Pick it up tomorrow.

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