Code P0101 serious knocking sound after major modifications
Thread Starter
Instructor
Joined: Nov 2001
Posts: 155
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From: Hamilton Waikato
Code P0101 serious knocking sound after major modifications
Have had the following modifications done. Done about 3000km. Suddenly today, car felt "rough" whilst driving when reaching 3000revs. I drove another 50km before needing to slow down. Idling extremely rough. threatening to switch off. Taking into a tech 2 scanner. Cylinders 3,5,6,7 and 8 weak. tech scanner found code P0101. Told it is a problem with the cam and more major work needs doing. Am i in trouble??
Donaldson Blackwing Intake System with cold air intake
Powerduct
Belanger Headers
X-pipe Corsa or Bassani
Corse Exhaust system
LS 6 manifold with accessories
Katech Stage 2 Head and Cam package
Underdrive Pulley with belt
3.42 Gears
TC sy3500
NGK PLugs and GM hotwires
Thermostat Fan and fan controller
[Modified by Naylin, 11:16 AM 12/6/2002]
Donaldson Blackwing Intake System with cold air intake
Powerduct
Belanger Headers
X-pipe Corsa or Bassani
Corse Exhaust system
LS 6 manifold with accessories
Katech Stage 2 Head and Cam package
Underdrive Pulley with belt
3.42 Gears
TC sy3500
NGK PLugs and GM hotwires
Thermostat Fan and fan controller
[Modified by Naylin, 11:16 AM 12/6/2002]
Burning Brakes
Joined: Jul 1999
Posts: 934
Likes: 0
From: Vegas
Re: Code P0101 serious knocking sound after major modifications (Naylin)
"P0101 Mass Air Flow (MAF) System performance -B"
Check your MAF first. Also, my friend had a bad IAT sensor wire that had similiar symptons.
Check your MAF first. Also, my friend had a bad IAT sensor wire that had similiar symptons.
Thread Starter
Instructor
Joined: Nov 2001
Posts: 155
Likes: 0
From: Hamilton Waikato
Re: Code P0101 serious knocking sound after major modifications (benelliwang)
The guys that service my car live about 120 km away, Do you think I am safe to drive the car with this??
Burning Brakes
Joined: Jul 1999
Posts: 934
Likes: 0
From: Vegas
Re: Code P0101 serious knocking sound after major modifications (Naylin)
Can't tell you man, it could be a mojor problem and driving it further may be bad to the engine.
However, my friend drove his car like crazy even with the engine all screwed up. :lol: And there was no problems.
Why don't you check the electric connection to the MAF and IAT first? It could be just a loose wire or leaky air tube?
However, my friend drove his car like crazy even with the engine all screwed up. :lol: And there was no problems.
Why don't you check the electric connection to the MAF and IAT first? It could be just a loose wire or leaky air tube?
Thread Starter
Instructor
Joined: Nov 2001
Posts: 155
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From: Hamilton Waikato
Re: Code P0101 serious knocking sound after major modifications (benelliwang)
I'm a total ignoramus here. so where exactly do i look for the MAF and IAt connections.. sorry, I know next to nothing
Thread Starter
Instructor
Joined: Nov 2001
Posts: 155
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From: Hamilton Waikato
Re: Code P0101 serious knocking sound after major modifications (alc2001)
Mechanics have been unable to find the problem. Diagnostic code P0101 keeps coming up. Placed on dyno: flattens out after 2500 revs and no loss of oil pressure so unlikely to be the cams.. knocking noise is at idle and up to about 1000 revs then evens out and comes back above 3000 revs... Any help needed please
Safety Car
Joined: Aug 2000
Posts: 4,154
Likes: 1
From: Murphy TX
Cruise-In II Veteran
Re: Code P0101 serious knocking sound after major modifications (Naylin)
Not sure what your knocking noise sounds like... Problem sounds sort of like a vacuum leak to me except that you describe the knocking as serious. Is is slow and "thud like"? Fast and "clicking"? Something else?
Another thing that could potentially result in your P0101 is your PCM tuning if the MAF table is wacked out. I doubt that's the case here since the problem didn't show up till well after your mods.
Is that the only code set? Were they able to get the freeze frame data for it (so you could see the conditions under which it set)?
I owe you an email. :cheers:
Another thing that could potentially result in your P0101 is your PCM tuning if the MAF table is wacked out. I doubt that's the case here since the problem didn't show up till well after your mods.
Is that the only code set? Were they able to get the freeze frame data for it (so you could see the conditions under which it set)?
I owe you an email. :cheers:
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Thread Starter
Instructor
Joined: Nov 2001
Posts: 155
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From: Hamilton Waikato
Re: Code P0101 serious knocking sound after major modifications (ToplessTexan)
the mechanics have found broken valve springs
need to get some to suit the new heads
will contact Nate
need to get some to suit the new heads
will contact Nate
Safety Car
Joined: Aug 2000
Posts: 4,154
Likes: 1
From: Murphy TX
Cruise-In II Veteran
Re: Code P0101 serious knocking sound after major modifications (Naylin)
the mechanics have found broken valve springs
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Instructor
Joined: Nov 2001
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From: Hamilton Waikato
Re: Code P0101 serious knocking sound after major modifications (ToplessTexan)
yep they did, but i understand that Katech have changed the springs they were using since then.probably because there was a problem....With all the other modifications I did get 294 KW at the rear wheels on the dyno. Was that too much for the valve springs... mostly daily driving although I do get up to about 220km/h regularly.
Are you still coming to NZ and are you keen to catch up
[Modified by Naylin, 11:10 AM 12/14/2002]
Are you still coming to NZ and are you keen to catch up
[Modified by Naylin, 11:10 AM 12/14/2002]
