Question about Subaru Forester

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Turbo not boosting engine light comes on now and then

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Turbos that are not boosting may be loosing the pressure from cracked/split intercooler, loose hose clips, split hoses and seized up variable vanes in the turbine side which the actuator tries to work when it gets vacuum from the actuator control module. Check that this hose is not cracked or broken off

Posted on May 11, 2014

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Posted on Jan 02, 2017

  • 2 Answers

SOURCE: no boost

Check all the rubber hoses to and from the inner cooler for cracks, make sure all the clamps are tight.

Posted on Aug 07, 2008

  • 51 Answers

SOURCE: turbo dont boost

Check the pipes from the turbo to the intercooler and the intercooler to the inlet manifold, one if the hoses maybe not sealing 100%. let me know.

Posted on Jan 12, 2009

  • 42 Answers

SOURCE: 99 dodge cummins. Have a code of P0237 turbo boost sensor low v.

The Volvo S80 did not come with a cummins engine

Posted on May 14, 2009

wilsodfarm
  • 986 Answers

SOURCE: Reset turbo boost relay 2003 Cummins

what engine isx ism or what, never heard of a relay, it goes straight to the ecm.

Posted on Jul 31, 2009

  • 1 Answer

SOURCE: saab 95 3.0 tid turbo with sticking waste gate

you have just described exactly the problem i'm having with my 3.0 tid, did you get it fixed in the end?? cheers, O

Posted on Nov 30, 2009

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1 Answer

Fault codes P0236 and P0046 keep coming up on my freelander1 td4 2004


P0236 = Possible causes are

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There may be some pressure "bypass gates" which regulate maximum boost and you may have one that is stuck open. The turbo would add some noise under the hood if a sidewall was blown through. A bad bypass valve would reduce your boost pressure too. Do a scan and see what it identifies.

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CODE SCAN VECHICLE TO SEE WHAT CAUSING CHECK ENGINE LIGHT TO COME ON.SOUND LIKE TURBOCHARGER REGULATATING VALVE AND ECM PROBLEMS.

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all turbo vehicles can only make boost if induction system is sealed,at this stage rather than looking for a fault with actuator controls,i would check to see if all ducting(piping) is secure.from airfilter,intercooler,turbo etc to engine,just check that there are no leaks,if there are any loose,revving it on the spot to cut in turbo should cause a loud rushing of air.if this is all ok then we need to further.

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1 Answer

LC Prado 2LTurbo engine,turbo is not boosting.


check the piping from the compressor outlet to the throttlebody for boost leaks. also check to make sure that the wastegate actuator is functioning properly. it may be stuck open. the other thing to check for would be an exhaust leak either between the head and the exhaust manifold or the exhaust manifold and the turbo.
if its none of those things, check the blades on the turbo (compessor and turbine sides) for damage and make sure that it turns freely

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