bhartwi
8/30/2006 5:32:53 AM
I need to tempararily disable the all wheel drive system on a Galant to do an emission test as the tester only has a 2WD dyno.
Any ideas on how to do this?
VR4GARY
8/30/2006 11:19:24 AM
When I did my 3000GT, they didn't do the dyno. Still completed the test and passed.
EMonz57
8/30/2006 8:47:23 PM
you cant temporary disconnect the driveshaft>?? I know nothing about this either??
davidmitsusrock
8/30/2006 9:36:52 PM
i have seen a video of a galant vr-4 fwd on a dyno so it is possible.
www.galantvr4.com that may help
Manybrews
9/1/2006 5:48:02 PM
quote:
ORIGINAL: EMonz57
you cant temporary disconnect the driveshaft>?? I know nothing about this either??
if you attempt to drive it like that, you'll destroy the viscous coupling and the center differential in no time at all. It will overheat in a very short tim and weld itself into a solid clump.
ive seen it done.
98eclpsrider
9/1/2006 9:18:15 PM
all they do for the emission is put your car in nutral and rev it to the RPM's needed. for the test.
Manybrews
9/2/2006 4:21:57 PM
quote:
ORIGINAL: 98eclpsrider
all they do for the emission is put your car in nutral and rev it to the RPM's needed. for the test.
not sure what emission test you're talking about, but that certainly doesnt test anything.
most AWD cars are actually exempt from testing for this very reason, though.
5Tizzle
9/2/2006 6:19:05 PM
thats how we do it in oregon. i just brought my rpms to 2500 for about 30 seconds, and it was over
98eclpsrider
9/3/2006 5:52:56 PM
quote:
ORIGINAL: Manybrews
quote:
ORIGINAL: 98eclpsrider
all they do for the emission is put your car in nutral and rev it to the RPM's needed. for the test.
not sure what emission test you're talking about, but that certainly doesnt test anything.
most AWD cars are actually exempt from testing for this very reason, though.
you don't have to spin the tires to make emissions, i thought everyone knew that, i did the emission on my mom's jeep with four wheel drive.
Manybrews
9/4/2006 9:24:49 AM
quote:
ORIGINAL: Jeffisdecentttttt
thats how we do it in oregon. i just brought my rpms to 2500 for about 30 seconds, and it was over
then your state is not an IM240 testing state. You need a load to actually test the car in real world situations, but apparently oregon isnt at that level of emissions testing.
Manybrews
9/4/2006 9:28:13 AM
quote:
ORIGINAL: 98eclpsrider
you don't have to spin the tires to make emissions, i thought everyone knew that, i did the emission on my mom's jeep with four wheel drive.
of course the car expells gases when its not moving; its just not anywhere near the amount that it is under load. you cant have a real test without load conditions.
Your state may not perform loaded tests such as an IM240 test.
revving the car engine in nuetral is not even a 5 percent engine load situation.
TheEngineer
9/4/2006 10:20:40 AM
well in mass with my AWD thats what they had to do to, just reving it. Then when it failed the guy then did it without doing anything, just the sensor in the pipe, and i still failed by double the state standard
. I got rid of the car before i had it fixed but im pretty sure it was a bad cat.
98eclpsrider
9/4/2006 2:30:52 PM
quote:
ORIGINAL: Manybrews
of course the car expells gases when its not moving; its just not anywhere near the amount that it is under load. you cant have a real test without load conditions.
Your state may not perform loaded tests such as an IM240 test.
revving the car engine in nuetral is not even a 5 percent engine load situation.
what does your state have then? here in washington we don't need that, and when spinning the wheels it's the same load they keep it at the same rpm's wouldn't it bee the same load when the engine is working the same. once the wheels start going the load goes down from force of gravity.
Manybrews
9/4/2006 3:47:59 PM
quote:
ORIGINAL: 98eclpsrider
what does your state have then? here in washington we don't need that, and when spinning the wheels it's the same load they keep it at the same rpm's wouldn't it bee the same load when the engine is working the same. once the wheels start going the load goes down from force of gravity.
there is certainly NOT the same load sitting still revving the engine as there is driving. You may only need 10 HP to stay at a constant cruise, but you will need 100 to get it there.
higher revs are not what creates high levels of NoX; thats caused by high combustion temps, only reached at high load situations.
An IM240 test is the nation standard in polluted areas. If you dont live in one, you probably will someday. check out a couple links for more information.
http://www.aa1car.com/library/im240.htm http://www.wivip.com/index.html?te_im240.html http://www.epa.state.il.us/air/vim/faq/testing.html
