91tt fails emission test
02-10-2005, 07:42 PM
#1
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Join Date: Sep 2004
Posts: 20
91tt fails emission test
91tt fails emission test. It fail at Idle " hc ppm " to high and "CO" to high.
2500 rpm is fine. I replaced Plugs,air filter,pcv val,changed oil. Car appears to run fine, I took it on a long drive before testing to make sure it was warm. I've only had the car for a few months. In Colorado Springs you need to have a emission test before you can get tags. Not sure what to check next .
Thanks Marvin
2500 rpm is fine. I replaced Plugs,air filter,pcv val,changed oil. Car appears to run fine, I took it on a long drive before testing to make sure it was warm. I've only had the car for a few months. In Colorado Springs you need to have a emission test before you can get tags. Not sure what to check next .
Thanks Marvin
02-10-2005, 07:54 PM
#2
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Join Date: Nov 2003
Location: Gerber, CA
Posts: 3,672
https://www.zdriver.com/forum/showth...highlight=smog
Read this.
High HC's and high CO is a sign of a rich condition; which is too much fuel. I had/have the opposite problem. What kind of plugs did you use? Could be O2 sensors or catalytic converters. What mods do you have? Has the ECU thrown and codes? Do resistance tests on your coil packs and injectors too to make sure they're all operating correctly. Try cleaning your throttle bodies as well.
Read this.
High HC's and high CO is a sign of a rich condition; which is too much fuel. I had/have the opposite problem. What kind of plugs did you use? Could be O2 sensors or catalytic converters. What mods do you have? Has the ECU thrown and codes? Do resistance tests on your coil packs and injectors too to make sure they're all operating correctly. Try cleaning your throttle bodies as well.
02-11-2005, 08:04 PM
#4
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Location: Gerber, CA
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Check your timing too. 13-17 degrees BTDC. Car should have more power at 17.
I can't remember if it says in the link I directed you too, but you could run 87 octane through it; which should improve your test results. The car won't run very well and you won't want to drive it hard until all of the 87 is burned out of the tank, but it may be worth a shot if nothing else works.
I can't remember if it says in the link I directed you too, but you could run 87 octane through it; which should improve your test results. The car won't run very well and you won't want to drive it hard until all of the 87 is burned out of the tank, but it may be worth a shot if nothing else works.
Last edited by 91zxtt; 02-11-2005 at 08:06 PM.
02-14-2005, 09:01 AM
#6
El Viejo
Join Date: Jan 2005
Location: San Felipe, Mexico
Posts: 204
Originally Posted by LUKassZ
Here in NJ we use a 100 dollar bill...
I should have said, People from NJ have a good humor. I was being a Ahole.
Last edited by Zgringo; 02-14-2005 at 05:09 PM.
02-14-2005, 11:16 PM
#11
El Viejo
Join Date: Jan 2005
Location: San Felipe, Mexico
Posts: 204
Originally Posted by 00Evan
Awwww is Zgringo gonna cry?
I'd hate to see my hero, my idol have anything happen to him.
02-15-2005, 06:21 AM
#12
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Posts: 47
Originally Posted by Zgringo
Your right Rizz...I was jumping the gun. It's not been a good week.
Sorry LUKassZ...Didn't mean to come on to you so hard. I owe you one.
Sorry LUKassZ...Didn't mean to come on to you so hard. I owe you one.
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