cgallamore Posted May 17, 2011 Share Posted May 17, 2011 cleaned egr coolernew turbo filtercleaned and lubed vgt linkagechecked air going to vgt, removed hose, appears to have plenty of air pressure.egr vaulve shaft is shiny, appears to be doing as should.comes and goes without ryme or reason, sometime i think rough roads help, but not every time????when it makes 33psi boost it is great, fire breather, good engine brake, hurts the feelings of large car owners.at 25 psi boost, it sucks, poor power, piss poor engine brake, builds exhaust temp very quik. brown exhaust smoke.humitity, altitude, temp,rain, day, night,it runs good and bad in all situations.never knowhow long either way is going to last, 5 min, or 5 days.can be running fine pulling a hill, downshift and it goes to hell, or maybe pulling hill running bad and downshift and it comes to life.no codes lights or alarms. the only thing i can see is boost change, its either 25psi runs bad, 33 psi runs great.engine brake works great at 12 to 14 psi boost. is shity at 5 psi.have been paying very close attention, near consuming, trying to nail down a common cause. no results.... Quote http://www.bigmacktrucks.com/uploads/1272400769/gallery_4852_794_314995.jpg Link to comment Share on other sites More sharing options...
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