rev up your engines okay yeah we've got a problem car, customer says it's
overheating a little but it's been hard to start and is running wrong of course
the first thing I did was hook up my fancy scan tool and unfortunately wanted
to give me nothing everything's passed no fault we go through the whole system
no problems and it's recorded so we're gonna start simple here says starting
overheat so check the coolant but you can see it's full all the way to the top and
it's a nice pink color it's supposed to be so let's check the cooling fans
easiest way is start the car up turning AC on full blast then go on to the hood
check the cooling fans this one's gone good and that was one good it's all the
cooling fans are working so as far the overheating could easily be the
thermostat is sticking not opening up right so what the heck well just put
another one on for that and now overheating can make your car run weird
but she's also saying it's hard to start when it's cold and that won't have any
effect on that thermostat is sticking shot it will actually start off faster
cuz it warm up faster so something else is doing that so we'll check the air
filter I think it's not particularly dirty do not we check the spark plugs
you gotta use this stretch a hex wrench to get this stupid thing off my office
does yeah we take off the coil on plug take that ten millimeter oh just pops
out just a spark plug socket check that
out it comes notice maybe has iridium plugs they're firing right the kind of a
white light gray that's normal or when I measure the gap the gaps pretty normal
for this thing so there's nothing obvious wrong spark plugs these are radium
they're very expensive but they last a long time there's no sense changing them
if one of them say was bad and the others weren't I would have a misfire
coat and there's none of that in the live data so there's gotta be a
problem I'm assuming in the fuel injection system so I'm gonna try to
clean it with some cleaners but first before things even get hotter
I'm gonna get the thermostat so although that at least that won't be stuck shot
making the engine overheat so the first thing we'll do is change the thermostat
they open and close with heat and I'm assuming this one is just staying closed
at times and making the car overeat how to do this you have to take the air
cleaner housing out of the way so we'll unbolt that there's two big clamps and pull it off
and as we pull it off, miracle of miracles we find out why it's probably not running all that well this
the duct is all ripped we have to replace it working logically has miracles like this
just take an air cleaner off to get to the thermostat big ducts ripped and
that's why it's idling bad look at that haha because when this rips
then air gets sucked in which bypasses the mass airflow sensor so the mass
airflow sensor doesn't meter this and you get the wrong air fuel mixture which
of course will make it run poorly especially when it's idling and you're
starting it well we're gonna change the thermostat first so once we get the top
off we take the bolts off inside there's three of them
get them out of this baby it's hidden way inside here you gotta
take on and off to get to this and then unbolt the hoses and pull it out then
you remove the three little 10 millimeter bolts that hold the
thermostat in place their hard to get so you need a long extension to
reach them and then the thermostat housing just Wiggles out there's not much
working room on this thing it's like oh we gotta wiggle and pull and believe it
or not there's so little working room on this crappy design you got to take the
starter off to get it off so here goes the star this so unfold the two started
bolts so turning on so you got swirl it quite a bit not it comes
and we got to pull the starter out of they way, alright now we can get the thermostat housing out
and it should give us enough room then you can reach you with pliers and there it is as
you can see it's stuck shut, I mean the old one was in there for what 17 years
normally I'd change it more often but this is such a job you can see most
people know I gotta change them until they finally break, you see there's a
little dongle here that's an air bleeder you put it in so that's on the top where
the air will be and as you can see the been hair it pushes right in the hole
the rubber seals it can you put the thermostat housing back over it don't
you just put the three bolts back on first put them on hand tight and now I'm
make them snug with the ratchet then of course you got to bolt the starter back
on there's the starter it sure is one gigantic pain in the butt to change
the thermostat just keep turn until the starter is tight yeah we put the air
box back in the hole they don't make it easy, and remember to put the new air duct in for the one that
was ripped just slips on this one
then slip the other end on the air box make the clamps tight huh don't forget
to do both of them, then before we put all the covers and everything back
on we're starting it up make sure it runs and make sure there's no leaks and
then of course as it warms up we got to add coolant because some of it dripped
out we change the thermostat and there you have it
a car that idles smooth and run smooth and there's no longer overheating, so if you never
want to miss another one of my new car repair videos, remember to ring that Bell