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-   -   What do these values mean?? (https://chevroletforum.com/forum/tahoe-suburban-25/what-do-these-values-mean-76605/)

Sledgehammer February 5th, 2016 10:14 PM

What do these values mean??
 
Hi guys.Attached the elm obd thingy while driving my 1999 tahoe (obs) 5.7 tahoe.I have to pas emissions for import here in Switzerland after importing my truck when we moved back from California.....
thanks a bunch.


Edit the attached form has a few to many numbers so heres a print screen

Sledgehammer February 6th, 2016 9:49 AM

1 Attachment(s)
Print screen so there aren't that many numbers

cleveland63b February 6th, 2016 6:58 PM

I don't have Microsoft office....any particularly thing you are looking at?

Sledgehammer February 7th, 2016 10:17 AM

2 Attachment(s)
Lets see if this works....Just looking if these values are withing spec. I know I have a misfire on #6 and the CEL comes on intermittently .....I have to pass inspection this thursday so I need to figure it out.....
Photo of the screen....if that will do?
btw this is in normal driving about 20 miles both highway and rural (no city) one way
Thanks in advance:

cleveland63b February 7th, 2016 10:30 AM

not sure how picky they are, the long term fuel trims are a little high normally they should stay in the -10 to 10 range, closer to 0 the better. I'm not too familiar with emissions testing areas. Let it idle at operating temp and see what the short term fuel trims do, if they are high at idle you need to be looking for a vacuum leak.

Sledgehammer February 7th, 2016 4:09 PM

Thanks will be hooking her up tomorrow again then.

Thanks again

Sledgehammer February 8th, 2016 10:14 AM

1 Attachment(s)
OK Did as you said . at idle these are the values: the average includes 2500rpm as described on the interwebs.....:D

looks like someething is of with bank 2?


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