rev up your engines one of the most annoying thing is your car is running
okay but you got to get it inspected and it fails the test when we plug in the
old scan tool on any scan tool read this even a twenty dollar one it shows it's
got p0100 mass volume air flow a circuit and here's how that circuit
works this is a mass airflow sensor inside it little electronic part it
measures how many grams of air flow into the engine per second and then tells the
computer how much fuel to send to the fuel injectors to the car runs perfectly
so let's open the hood and find it there it is right here
bolts on here snaps on here now if we look closely we'll see there's no frayed
wiring or anything sometimes the wiring gets frayed sometimes that's the problem
sometimes you can even clean them with mass airflow sensor cleaned or you want
to use just this because it leaves no residue but I've been working on these
things for years and I know when it gets that particular code on a Nissan it's a
problem in the circuit it's not dirt or anything not running rich or lean
there's a problem in the circuit for my experience in these it's always the
sensor itself is just wearing out now if you feel lucky you can take it out and
clean it I got a whole video on cleaning it make your car run better with a
little spray cleaner watch that and want it to feel real lucky but with this
particular code it's a problem in the circuit and for my experience there's
only three things that can do that a bad sensor bad wiring or a bad main computer
now I've looked at this wiring I don't see anything frayed and where it frays
is always at the end where the sensor is I see them where they get brittle where
they come apart I'm gonna on snap it just to make sure it's not corroded and
green though so we'll squeeze it pull it off ah let's
look inside as you can see it's pretty well sealed everything is
shiny metal there's no corrosion there when we look inside here it's kind of
dark it doesn't look bad but I gotta take it off and inspect it in the Sun
well unscrew that's it this is all one piece we'll just I bought the air filter
box pull the whole thing
out it comes now as you can see in the sunlight
this is crystal clean not dirty no problem with that we're just gonna
replace it easy job just take the bolts off
it's a lot easier doing this once you get it off the car all kinds of working room
here even that one's gone tight cuz that's a no way I'm not difficult take
all those off and normally you gotta measure which way it goes so yeah I'll
put it backwards got a little mark around here and it says airflow goes
this way but in this case you don't have to worry because one and bolts on the
others different so you can't put this one on backwards a lot of them both ends
are the same and you could put it in backwards it wouldn't run right but
that's it only bolts on one way so they have to worry with this design and here
you want to use a new one rebuilt ones you never know this is brand new it's
already got a new gasket just bolts on it all four bolts on huh and make sure
they're all tight and a nice and snug you don't want any air leaking faster
flip it over and do the other side it's important that you have an airtight seal
because this is all filtered air you don't want non filtered air with dirt in
that will ruin these things these are hot mass airflow sensors when you shut
the car off it burns any impurities off these wires
by getting them glowing red hot if you get any dirt on that it'll make it burn
itself out just like if you touched the filament of a light bulb with your
greasy hands it didn't ruin it so make sure it's nice and tight so we put it
back on first thing slip it over a rubber the one I slipped over with the
air box in its place make all the snaps click realizes ones up here too when you
can't even see on the other side but you'll hear it click when I get it yeah
then we just tighten up the clamp get it nice and tight you don't want air leak
in there especially and while you're at it go to the other side follow it make
sure everything is solid make sure that's all bolted on tight it is okay then we
go back inside and what we do is with the scan tool hooked up we will turn the
ignition key on so the key is on the idiot lights are on but the car is not
running then we go to the car and roll back and what we want to do is erase
codes so we'll go to diagnose the codes up here erase codes yes so we
click yes guess we gotta click it twice there then we enter turn key on with
engine off enter and now it's easing the code you have to erase it because if you
fix that event you will erase itself but they could take a while and this is
instantaneous you can see now that says there's no college but we don't trust
anyone so we'll go back we'll go back to read college and let's see what it says
no codes found so now it's reset and now comes the easy boring part we just start
it up and let it warm up we've restarted but cars have what's called a drive
cycle and in order to pass the emissions test it has to go through the god sucker
so we're going to take it on a highway going 55 miles an hour or faster then
drive it in town a little and see what happens what we're gonna do there is
we're going to go to special functions as we do special functions it's quite
interesting we want the global ob2 and what we're going to is the drive cycle
monitor and as you can see here there are 1 2 3 4 5 incomplete monitors so
restart the car and we're going to watch these now there's only 4 it's already
reset 1 those vehicles little passed inspection that it has to have just one
monitor incomplete there's 4 now but this is an old car it's a 98 and back in
those days you still allowed to have 2 incomplete so we just have to drive it
until there's only 2 incompletes then we can get it inspected and let's
outside you got to drive it on the hard way awhile at 55 60 miles an hour so
here we go and what did you know I got a road
testing going fast here I am in a massive traffic jam in Houston isn't
that just typical just realize it sometimes it takes a while specially
these older cars drive it and watch the monitors until it's down to two well now
it's getting down there and all right now it's down to two and we can
go back now as I said most modern cars when they're 2000 or newer you can only
have one mill not ready to pass the test but this is a 98
so with two Mills not ready it will pass the test okay now there's only two Mils
not ready that means this particular one a 98 will pass a test but you gotta make
sure one thing we're gonna go back diagnostic codes here we go and pray it
hasn't said any while we were driving so here goes nothing read codes no coach
found that means it's going to pass the emissions test and we succeed it arrived
sometimes it's free easy job if you use your noggin and here's some bonus
questions and answers number one pack size Packer fan I'm
thinking about getting another Oldsmobile 98 year 92 or a lexus 2009 460
what's your thoughts on these cars if you like the Oldsmobiles and you can
find one up in Green Bay that isn't rotting away from all assault and the
winter 92 Oldsmobile 98 were a lot better made there are pretty solid cars if you
like one go right ahead now the Lexus 460 I am NOT a fan of
people buying used v8 Lexus because the parts cost a lot of money and they're
very very very expensive to maintain when they break down that's the v8 Lexus
engine let's say the starter brick she's gonna take the intake manifold off to
get to the starter so it's a very expensive job most guys gonna charge
over a thousand bucks to replace that starter stupid design and the v8s are
like that the v6s and the fours in the Lexuses they aren't designed that way
so in that case I'd say you better off fiddle around with an Oldsmobile that's
old then with the later model Lexus because the Lexus is gonna cost money a
lot of money to fix when it breaks down my travel size do you think French
brands will be able to hit the American market well you know I kind of
doubt it because just in a deal really emerged with Fiat and Chrysler
Fiat and Chrysler failing the french are kind of failing three fails to make a
pass I doubt that they'd be dumb enought to bring those into the United States when
Fiat bought Chrysler they started importing the Fiats in the United States
now they're talking about pulling the Fiats out they still owned Chrysler's
they were talking about pulling Fiats out cuz nobody's buying it because of
poor sales they sold two shows in the United States years ago and there were
massive failures nobody knew how to fix them the parts cost a fortune I know in
Europe people haven't liked them because they make good diesel engines and over
there they drove a lot of diesels but they're getting away from that too so
they're trying to not pollute so eventually they'll probably get rid of
diesel cars in Europe so that was their main market with selling deal cars to
people but I doubt if they do if they do I think they're stupid and lost such a
deal where they've really perfected electric cars and everybody's going to
electric cars and yeah we might see them making electric cars but gasoline and
diesel cars in United States I don't think so
gelada says Scotty I was on Craigslist and saw 2006 impala SS 300
bucks with a brand new transmission with a 12 month warranty okay
I'm assuming the transmission as a 12 month warranty there are endless money
pits to begin with and if you're paying 800 bucks one that has a new
transmission if it was really a new transmission brand-new the guy
would have paid thousands and thousands for that so it'd be stupid that he'd be
selling it at that price it's probably a load of hogwash don't even think about
buying that car I had a customer about six months ago be in the same type of
situation and I told him I said look if you're absolutely nuts about it they
said oh he went there and it was a scam the guy was pulling some kind of eBay
scam so I'm assuming that's probably some kind of scam doesn't really have
real transmission that was pointed in it with a year warranty and the rest of the
cars no warranty but they're junky how's your eight hundred bucks you can put
your money better into something else
so if you never want to miss another one of my new car repair videos, remember
to ring that Bell