The message to which you are about to reply is shown first. GO TO REPLY FORM



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

'Power flush' doesn't help!! 200 1983

posted by  someone claiming to be Manolo on  Wed Mar 12 16:08 CST 2003 [RELATED]

Water temperature will have very little impact on your NOx emissions. However, some things that cause high NOx will also heat your water unusually, which is why high water temp and high NOx are often seen at the same time.

Combustion temperatures are in the 2000-3000 degree range at the instant that NOx forms. If it gets 500 degrees hotter than it should, you will see high NOx. Whether the water on the other side of the metal wall is 190 or 210 degrees will have very little impact on NOx formation.

Interestingly, a stuck airbox thermostat, which only heats your inlet air a few extra degrees (relatively speaking) CAN impact NOx. Go figure.

I don't think that your car has EGR, so the only other things that can impact NOx dramatically are timing (more advance = more NOx), fouled reduction bed in your 3-way catalytic converter (need a new one), or a mixture that is lean under load, caused by any one of several things, most likely the O2 sensor.






USERNAME
Use "claim to be" below if you don't want to log in.
PASSWORD
I don't have an account. Sign me up.
CLAIM TO BE
Use only if you don't want to login (post anonymously).
ENTER CAPTCHA CODE
This is required for posting anonymously.
OPTIONS notify by email
Available only to user accounts.
SUBJECT
MODEL/YEAR
MESSAGE

DICTIONARY
LABEL(S) +
IMAGE URL *
[IMAGE LIBRARY (UPLOAD/SELECT)]

* = Field is optional.

+ = Enter space delimited labels for this post. An example entry: 240 muffler


©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.