IHADAV8.com - Turbo Buick Tech, and Nonsense

Tech Area => General Buick Tech => Topic started by: roller3501 on January 22 2011, 04:10:07 PM

Title: Scanmaster Numbers Need Help
Post by: roller3501 on January 22 2011, 04:10:07 PM

Here are the numbers that came up on the scan master. This was after making a wot run on the street and coming back and letting idle.

02 from 691 to 707 but rising slowly
AF 5
L8 35
BAT 13.7
INT 128
CLT 182
ATS Avg low 90's
RPM 750
TPS .42 @ idle
LAC 14
CC 10-251 rising slowly

It had knock of 7.5 degrees and 02 reading was 664 @ 78 mph

Went out ran it a second time and had knock of 6.6 degrees and 02 was 464 @ 104 mph

We have the TPS set @ .42 at idle

Need any input on what could be causng this knock. Fuel pressure is set at 40lbs. Thanks.

Title: Re: Scanmaster Numbers Need Help
Post by: 87granny on January 22 2011, 05:12:54 PM

Quote from: "roller3501 @ Sat Jan 22, 2011 4:10 pm"

Here are the numbers that came up on the scan master. This was after making a wot run on the street and coming back and letting idle.

02 from 691 to 707 but rising slowly
AF 5
L8 35
BAT 13.7
INT 128
CLT 182
ATS Avg low 90's
RPM 750
TPS .42 @ idle
LAC 14
CC 10-251 rising slowly

It had knock of 7.5 degrees and 02 reading was 664 @ 78 mph

Went out ran it a second time and had knock of 6.6 degrees and 02 was 464 @ 104 mph

We have the TPS set @ .42 at idle

Need any input on what could be causng this knock. Fuel pressure is set at 40lbs. Thanks.

Is your fuel psi raising with boost you may have a pump going south

Title: Scanmaster Numbers Need Help
Post by: Steve Wood on January 22 2011, 05:32:37 PM

As we always tell people, O2s should be around 780 at wide open throttle