Cobalt down!
So I have a 2010 cobalt. I was pulling out of a gas station got on it really hard in 2nd gear. When I went to slow down in N I had a loud pop almost like a back fire and had no more boost. When I crank the car I have 10lbs in 1st 10 in 2nd till 4500 rpm's then it's like you hit a brick wall. No boost and anything above 4000 rpm its like it don't wanna go. Only codes I was getting at the time was p0101. I replaced the maf, map, turbo(for the waste gate actuator solenoid), ecu, and have switched the baro/ boost sensor for a well known good part. Now I get a code of p0101 and the turbocharger under boost. I've leak checked everything and have no leaks. I do have a catless downpipe and cold air intake on the car. Now with the tech 2 on the car it shows that boost is at 14psi(which could be the baro side) that's key on motor off or key on motor on also. Any ideas that will help
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Intercooler??
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Your wiring to your maf sensor.
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Boost leak checked it and no leaks we're found. But also the question of why is it going into mechanical boost. If there was a leak wouldn't it not build boost at all
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My car did the exact same thing, I havent looked into why but i got a speed density tune from Vince and it seems to work fine now. Only thing i could guess is its the wiring to the maf sensor.
I would also put your stock airbox on and try again. |
fmic....
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Originally Posted by bamaboy22
(Post 6640866)
Boost leak checked it and no leaks we're found. But also the question of why is it going into mechanical boost. If there was a leak wouldn't it not build boost at all
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Boost leak. And unless you made a tester and hooked up a compressor with 100psi, you didn't check anything :lol:
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James was in town he done it for me. I'm going to double check it tomorrow at work. But also hook the smoke machine up 2 it
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Fire, fire will fix this problem.
Seriously though hope you get it fixed buddy but I would also recheck maf because other people have been known to get bad mafs striaght out of the box. Hope you get it fixed though Josh it sucks not having a car I know :(. |
We have a sky I can pull a maf out of
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You mentioned a few mods, so out of curiosity what tune are you running? Stock, GMS1, Trifecta?
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Check for damage to downpipe. Similar thing happened to me when I let my friend drive it and when I took it to the dealer they said my cat was bad:r:
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Originally Posted by turbosmart4
(Post 6642033)
Check for damage to downpipe. Similar thing happened to me when I let my friend drive it and when I took it to the dealer they said my cat was bad:r:
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Yea it did, it didn't let me rev up past 4k rpms when it was bad
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Car go vrooom vrooom again. Inter cooler. Smoked system it showed
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What??
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Originally Posted by bamaboy22
(Post 6643092)
Car go vrooom vrooom again. Inter cooler. Smoked system it showed
glad you found the problem though. |
:lol::lol::lol:
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called it lol
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We need a sticky that says, "P0236 and P0101 ON A STOCK INTERCOOLER MEANS YOU BROKE THE INTERCOOLER. DON'T QUESTION IT AND DON'T TELL US YOU RAN A BOOST LEAK TEST. JUST REPLACE THE INTERCOOLER."
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Originally Posted by elecblue06
(Post 6643218)
called it lol
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2 Attachment(s)
Sorry I was about to hit a dead zone so was typing fast lol. The boost leak pressure check showed no leak which I don't know how. But when I smoked the system(hook up on the intake off the nipple glove over the hole) in less then 3 mins I seen smoke coming out of the passenger side from below the headlight.
Attachment 56258 That's what I found. But I will say before I replaced the turbo and ECM the only code I got was p0101. On my test drive I seen this Attachment 56259 Best I could do better then nothing |
What is that? A wedgie w sweat?
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Originally Posted by BoostedBeaner
(Post 6643311)
Nu uh. I called it first ;)
I guess thats what I get for loading a million tabs lol |
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