Replace the boost sensor its about $60 that will clear the PO236 codes (i beleive that was the code)
Duralast part # is su129 and has a lifetime warranty. located under the "turbo power" engine cover if you havent removed that yet take it off and leave it off reduces heat
sounds like your vacuum pump is bad remove it, buy a 99.5" serpentine belt and do a mechanical wastegate. adjust the spring to the boost you want. good luck
SOURCE: 2001 CHEVROLET 6.6L I PULL OIL DIPSTICK NOTICE
sounds like you have a cracked header or engine block. would take it to a mechanic quick
SOURCE: smoke is coming from the dipstick, 6.5L turbo diesel
Sounds like you have a clogged PCV valve thats the valve that lets the gases that get into the crankcase be rerouted back into the intake. It's silver about two inches and is usually in a rubber fitting in the valve cover and will have a hose on the other end. it's no tools installation just pull the hose off pull it out and replace with a new one. thats the first thing i'd do - 10 mins and 10 bucks should do it
SOURCE: suburban low pressure from fuel pump
Try checking the fuel filter and then the pressure regulator on the rail. If the pressure regulator is bad it will not let the pump push enough pressure. And if the filter is clogged then it will also not let the engine get enought pressure. I have seen pumps starter going out by losing pressure. I have also seen aftermarket pumps quit after about a week unles you did not change the whole assembly.
Testimonial: "Thanks! I was unaware of the regulator. We did check the filter. Great info!"
SOURCE: 2005 silverado lt 6.6 duramax diesel turbo..engine
Before we do anything else lets do a fuel pressure check to make sure the pump is a-ok as well as the fuel pressure regulator. Your gonna need shop manual for this as well as a fuel pressure tester. If all checks out then move to the Turbo code.
Turbo code looks like the waste gate is stuck open and your not building the boost. Do a visual inspection look for any signs of overheating and bearing wear. Check or change oil as needed.
With regards to the Mass air flow I believe you have to replace it. Keep in mind this thing might be the root of you whole problem.
I strongly suggest you use the shop manual for the codes you got. it will make this repair a snap.
SOURCE: My 2001 4x4 1500 Chevy Suburban with 249,000 miles
Clicking is caused by lack of oil in the hydraulic lifters. If the car has had regular oil changes, the problem is probably the oil pump. If not, the engine may be shot with this much mileage. The part is $150 at autozone, but a shop may charge more. The labor for this job is about a day, so the total can easily be $600-900. If you have more questions, please let me know.
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