I have a 2010 SHO with 94,000 miles with a bad turbo. I had both turbos replaced with OEM, new lines etc. 3 1/2 years ago at 83,000 miles, I work from home and don't drive that much. I notice the connector for the BOV is undone see attached picture. I was wondering is it possible that only one turbo is bad? Trying to decide if it is worth repairing and could the loose connector cause the failure.
2010 Sho bad Turbos again
- Thread starter ChuckC
- Start date
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Shadow351
SHO Member
I'd say that it is likely that only one turbo is bad (if it is indeed a bad turbo). When the bad turbo(s) were replaced last time, was the oil cleaned out of the intercooler? When my front turbo failed the first time, it filled the IC with oil and the car still smoked occasionally after replacement until I used a siphon to suck the oil out of the IC.
I doubt 1 of the BOV's being inoperative would cause a turbo failure since they are both on the same pipe (and as a matter of fact, the longitudinal 3.5L EcoBoosts only have a single BOV to begin with, so 1 should be sufficient to release boost sufficiently). If the front BOV has failed and the second is unplugged, I suppose the compressor surge could cause a turbo to fail, but you would probably hear the turbo flutter and be apprised to there being an issue. Were you hearing compressor surge/turbo flutter at any time?
I doubt 1 of the BOV's being inoperative would cause a turbo failure since they are both on the same pipe (and as a matter of fact, the longitudinal 3.5L EcoBoosts only have a single BOV to begin with, so 1 should be sufficient to release boost sufficiently). If the front BOV has failed and the second is unplugged, I suppose the compressor surge could cause a turbo to fail, but you would probably hear the turbo flutter and be apprised to there being an issue. Were you hearing compressor surge/turbo flutter at any time?
I don't recall any issues but for the past few years I only drove the car around town a couple of days a week. I was able to pull a few codes P0035 Turbocharger(TC) bypass valve circuit high., P0301 cylinder 1 misfired detected, P1921 Transmission Range Signal and P2196 HO2s Bank 1 signal stuck rich. Yes the oil was cleaned and all the oil lines were replaced.
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You won't be able to tell which turbo is smoking using exhaust as both DPs meet at the center cat. I would try isolate which side is smoking and then check that turbo oil drain line gasket alignment. A poorly aligned gasket will slowly allow oil to build up on the exhaust side and burn off once the area behind the heat diffusor gets full (and if you don't drive it much, it takes awhile. Mine took 5000 miles). If it smokes big and then goes away for a awhile, definitely check this gasket first. If both sides are smoking, I'd look at the PCV system and blowby. I would not expect two lightly driven turbos to go bad so quickly.
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