This harness is completely Plug - N - Play and allows you to remove the IAT
from the MAF assembly's on C7 Corvette Stingrays...
If the voltage signal reading of the manifold absolute pressure (MAP) sensor sends a voltage signal to the PCM that does not coincide with the voltage signal that is sent
from the MAF sensor, the P2281 diagnostic trouble code will be stored and the check engine light will come on.
If you don't have the cold start injector this diagram may be wrong but maybe backtrace the harness
from the maf sensor it looks like there is a couple splices that power a bunch of related items.
Aside
from the MAF, are there any other usual suspects?
In order to get the engine to run with the hose off, I had to remove the electrical connector
from the MAF (manifold air flow) sensor just past the air filter; otherwise, the computer saw no airflow and cut off fuel injection, causing the engine to stall within 5 seconds.
Very definitely going to be one way comms, and I've been reading up on calculating MPG
from MAF and VSS.
I have taken these readings
from the MAF sensor.
The only thing from there is the large flexible accordian hose that goes
from MAF to a large plastic air container (not sure on the name) that is connected to the TB via another large rubber hose.
Some vehicles are able to run in a fallback mode in the absence of signal
from the MAF sensor, so one quick test to confirm that the MAF is bad will involve disconnecting the MAF to see if it improves driveability.
What can you recommend
from a MAF perspective?
Not exact matches
The
MAF of common risk alleles can range
from 5 % to 50 %.
If you've been injured or overtrained (or if you are recovering
from injury or overtraining) then stick to 100 %
MAF training.
I am also a fitness instructor so do have about 2 - 4 workouts (mostly weights) each week at the gym that my HR is well over my 138
MAF and even while I cycle (something I changed to this fall to help with the stress on my adrenals
from running) takes me over that effort when I am not working very hard.
My
MAF pace has come down
from 11:24 to 10:28 in my fourth test (Saturday).
The
MAF Test tells you if you're headed in the wrong direction, either
from too much anaerobic exercise, too little aerobic exercise or any imbalance that is having an adverse effect on the aerobic system.
I have been following the
MAF method for over a year now as a result of damaging myself in multiple ways
from OTS.
MAF provides simple exercise guidelines based on individualized heart rates that work for everyone
from sedentary individuals to professional athletes.
The
MAF Method employs various strategies to successfully eliminate these foods
from the diet.
I have gone
from 7min / km initial time to 5:40 min / km recently during my
MAF tests.
A relaxed 5 step breathing rhythm or a 7 step breathing threshold (running as quickly as possible without deviating
from this rhythm) usually corresponds to a very similar pace / heart rate as traditional «
MAF» or aerobic threshold workouts.
Suffice it to say that
MAF training is exercise
from which you have to recover in order to become better.
I am doing
MAF training for 3 years now, improving
from 5:20 min / km pace down to 4:25 min / km over those three years (yes, almost a minute faster) Initially,
MAF pace was really easy and very pleasant.
More intensity than
MAF and the anaerobic engine works more and more,
from now on the body will start to use also type 2 fast twitch muscle fibers, use sugar for good, and start accumulating lactic acid.
Hello
from Austria, I am an ultrarunner, I incorporated
MAF training already back in 2009.
Training exclusively at
MAF is for building an aerobic base, recovering
from an illness, an injury, or overtraining.
We recommend that people warm up for 15 minutes, slowly bringing their heart rate
from 20 below
MAF up to
MAF.
3) Switch training HR
from day to day to strengthen chords and bones by allowing better recovery between runs at a training - HR as near as possible to my
MAF - HR.
But I'm not suggesting the below -
MAF HR training is actually causing the asthma, it's just that something has changed (quite dramatically)
from how I was before, and I thought that perhaps it was that my lungs aren't as strong as they used to be (because I'm not exercising them as much without high - intensity training), and therefore not as resistant to the stress or allergens that cause the asthma.
To what extent should the two - week
MAF test be different
from what you are recommended to eat afterwards?
im a 34yo male runner who has been
maf based training for 7 months now, started
from 10k a week again now back to 50k a week.i monitor acute to chronic workloads aswell keeping beetween 0.8 and 1.3.
From personal experience, my speed / paces (at
MAF HR and below) were the best when I was on a high carb, low fat diet.
Actually, my speed at my
MAF has declined
from the week before the test and also I feel cold most of the day.
The only reason why you want to train only at the
MAF HR is because you are either (1) ill, injured, or overtrained, (2) recovering
from any of the above, or (3) in a period of aerobic base building required by your sport.
Even before converting to the
MAF Method I did not suffer
from the symptoms of carbohydrate intolerance.
Be sure to comment about your successes and failures with
MAF here on the blog; it's always useful to trade stories so that people can learn
from one another.
The distance
from your resting HR to your
MAF HR becomes wider (or stays the same), plus your body produces more power per heart rate increase.
From January to July he consistently worked out within his
MAF training heart rate with only a handful of anaerobic sessions.
During my investigating i noticed the check engine light didn't come on when i unplugged the
MAF, and it was also coated in engine oil which had leaked all the way down into my air filter
from a gummed up pcv so now im under the conclusion i prolly need a new
MAF sensor AND a throttle body... ouch!
The air filter housing seal is in the middle of this first picture,
MAF sensor in the second picture (stills were taken
from this video).
So just when i was ready to give in and buy a new TB and
MAF sensor i got a text
from a friend who i questioned about my issue.
Since your cylinders may be especially dirty
from running without the
MAF sensor, I'd recommend using seafoam to clean it up.
I wouldn't rule out a bad
MAF so quickly - there was a generation of VW and AUDI
MAFs that slowly went south without any indication
from the ECU that they were doing so and IIRC the ECU managed to compensate for the dying
MAF for a while.
As GdD says in his answer a failing
MAF is the likely culprit here - and would be consistent with the codes you are getting
from the ECU.
Here's an image of the
MAF from the air filter side, you can really see the accumulated dirt on the surfaces.
Other reasons to recirculate: Aside
from issues with the
MAF, there are other reasons to recirculate.
They do not have any significant problems, except for the ones of idle air control valve and
MAF sensor, which happen
from time to time.
Induction Large Greddy Throttle housings (awaiting first delivery
from Greddy) Greddy modified steel manifolds / modified with v bands couplings & SVM support system GTX GT35 Garrett Turbo Chargers with ball bearing core assemblies & V Band Fitment Tial 44 mm external waste gates V Band Fitment Custom 80 mm down pipes Zercoated 80 mm hard pipe kit with SVM Green pipe couplers and murray hose clamps 80 mm
MAF pies with HPX
MAF sensors HKS Blow off Valves GTC 102 mm Titanium Exhaust system with 102 mm GTC Y pipe fully resonated KN High flow air filter system with ram pipes & 90 mm intakes
Entire Air intake system changed, with the air intake starting
from the side vent wrapping around the back to a trunk mounted filter, then on to a
MAF mounted lower in the engine bay.
The
MAF was founded in 1948 by Dr. Mark L. Morris Sr., a veterinarian whose research on diet and animal health saved dogs
from kidney failure and helped revolutionized the pet food industry.
MAF has received a gift of $ 1 million
from the Golden Retriever Foundation for cancer research, with an emphasis on hemangiosarcoma and lymphoma — the same two cancers that we in Aussies most need to worry about.