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Recent Exhaust questions

Getting both po171 and po174 codes while pulling a load on

Getting both po171 and po174 codes while pulling a load on my 08 2500hd with 6.0 and can't find any vacuum leaks, air sensor is immaculately clean and am wondering if it could be screen on fuel pickup tube. Do they get clogged?JA: Just to clarify, can you actually see the leak?Customer: No leak at all. I used starting fluid aerosol and sprayed all around intake manifold and hoses and had someone watching tach while I listened and no evident leakJA: What is the model of your '08 Chevy?Customer: 2500hdJA: Are you fixing your vehicle yourself? What have you tried so far?Customer: just what I desrcribed aboveJA: Anything else you want the mechanic to know before I connect you?Customer: no

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AMEDEE

Automotive Consultant

Vocational, Technical or Trade Scho

22,018 satisfied customers
I have a 2008 Chevy cobalt, I bought this used. Dealer said

I have a 2008 Chevy cobalt, I bought this used. Dealer said all was good. Drove less than 500 miles, still have a*****line warranty and they won't cover it. I think this should have been done before. Either way, I have codes p0411, p2440, & p0446. Not sure how bad these could be?JA: Just to clarify, what's the exact code? And have you tried to reset it?Customer: The codes they gave me on the diagnostic were p0411, p2440, & p0446JA: Are you fixing your Cobalt yourself? What have you tried so far?Customer: Just took it to the dealer since I just got it, thought they should fix it. I'm searching for answers to fix it, or have someone fix it nowJA: Anything else you want the mechanic to know before I connect you?Customer: That is all. Thanks

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Ron Z.

Vocational, Technical or Trade Scho

24,076 satisfied customers
2005 Chevrolet Cobalt 2.2L Codes in the ecm: P0752-00,

2005 Chevrolet Cobalt 2.2L Codes in the ecm: P0752-00, P0128, P0700. Randomly will not go over 30 mph. Common causes?

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Chad Farhat

Owner

Associate Degree

5,576 satisfied customers
Well, The truck is running. Yay! But it sounds like a

Hello, Well, The truck is running. Yay! But it sounds like a Cummins. loud. and it seems to be in limp mode(no power, bluish white smoke coming from exhaust. I think the Turbo crapped out as well. Any thoughts as how to check individual cylinders, injectors, glow plugs? Oh, forgot to mention previously. I put a OBD II computer on it. It gave me a glow plug module fault. Any help is good help. (Yep, shade tree[poor] mechanic here.

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Pete

Independent Auto Technician

Vocational, Technical or Trade Scho

19,084 satisfied customers
Im getting no fuel to my tbi injectors. its always guzzled

im getting no fuel to my tbi injectors.JA: Has the vehicle turned into a gas hog? And how does it start -- same as usual?Customer: its always guzzled gas. and it doesnt start nowJA: What is the model/year of your Chevy?Customer: 91 k1500 4.3lJA: Are you fixing your vehicle yourself? What have you tried so far?Customer: ive redone the ignition system, re built the distributor, new ignition control module, pickup coil, ignition coil, new tbi injectors, fuel pump, filter, plugs, plug wires, map sensor, and pcv valve.JA: Anything else you want the mechanic to know before I connect you?Customer: it was just rebuilt by me last week, new motor, transmission, fuel pump, fuel pump relay, literally everything but the harness is new

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AMEDEE

Automotive Consultant

Vocational, Technical or Trade Scho

22,018 satisfied customers
How would i advertise these heads I have? All I know is

How would i advertise these heads I have? All I know is they're 317 with 660 dual springs and I spent 700 at a machine shop getting them ready just to find out that it would lower my compression. It's more for boosted cars. Those are all the specs I know. So how to I post it?

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Gary

Senior Technician

Vocational, Technical or Trade School

1,894 satisfied customers
1994 k1500, 350 engine. Had a Jasper rebuilt engine (350)

1994 k1500, 350 engine. Had a Jasper rebuilt engine (350) installed in 2012. From day one I smelled crankcase blowby. Odor gradually kept increasing. Complained to the repair shop with no results (naturally!). And now, at 40,000 miles, the stench is almost unbearable. Drivers back off sometimes one- or two-tenths of a mile. Engine has slight oil leaks at both mains (down by a pint in 2000 miles).The strange thing about my situation is that the smell comes ONLY from the engine compartment. When I'm parked with the engine idling, I can walk around the truck and the smell is awful. When I lift the hood the odor nearly knocks me back. HOWEVER, THE ODOR FROM THE EXHAUST PIPES IS PERFECTLY CLEAN -- NOT A HINT OF BURNING OIL! SMELLS LIKE PURE WATER VAPOR; I COULD INHALE IT ALL DAY.In an effort to subdue the crankcase odor, I just now switched to 30w oil plus a quart of Lucas oil.

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Gary

Vocational, Technical or Trade Scho

27,496 satisfied customers
Ok, well just today on way home service engine light came on

Ok, well just today on way home service engine light came on while on highway. Cruise was set. Started acting strange like trans slipping. Got home pulled codes. Fuel pressure 56 psi koeo. P1133, po303,p0161,po137. 2000 Silverado 2500 6.0. thanks

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1,012 satisfied customers
I have had the exhaust filter cleaned twice in the last 4

I have had the exhaust filter cleaned twice in the last 4 months at chevy and now im back in limp mode? anything I can do without going back to dealerJA: How many miles are on the car? How has your mileage been lately?Customer: 90k 13.6 about same as normalJA: What is the model of your '13 Chevy?Customer: 2011 4x4 2500 LTZJA: Are you fixing your 2500 yourself? What have you tried so far?Customer: I've forced regen 2 timesJA: Anything else you want the mechanic to know before I connect you?Customer: that's it thank you

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Pete

Independent Auto Technician

Vocational, Technical or Trade Scho

19,084 satisfied customers
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