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GM Forum - Buick, Cadillac, Olds, GMC & Pontiac chat (https://www.gmforum.com/)
-   1992-1999 (https://www.gmforum.com/1992-1999-91/)
-   -   kr and pinging (https://www.gmforum.com/1992-1999-91/kr-pinging-217568/)

d.denis 06-05-2005 08:51 PM

do you really think that .05 gap would cause 20 degrees of kr

LakevilleSSEi 06-05-2005 09:48 PM

I don't know.....But may tak a lil off the top. I'm gapped at .60 right now and since it's gotten warmer out....My KR's on the rise.

fantastic88 06-05-2005 09:52 PM

Mine are gapped at .60 and now that its humid the car is sluggish. I have to pull em and regap them.

d.denis 06-05-2005 11:35 PM

here are some numbers

At wot while pinging
lt fuel trim 150
coolant temp 179
ks count 10
ex 02 rich
st fuel trim 128
kr 0 degrees
clsd loop
maf gr/sec 38392
02 mv 897
02 cross counts 0
spark advance 14 degrees

at idle
lt fuel trim 135
coolant temp 171 degrees
ex o2 varies second to second
st fuel trim 126 -128 varies per second
clsd loop
maf gr/sec 1250-1300 varies per second
02 mv 200-800 varies per second
spark advance 19 degrees
tps .58 v

hope this helps

LakevilleSSEi 06-06-2005 12:05 AM

You're TPS is reading to high for idle speed I think. My TPS only reads like .4 at idle I think. Gonna get some fresh readings again.

d.denis 06-06-2005 12:38 AM

as long as it is under .70 it is fine

LakevilleSSEi 06-06-2005 12:39 AM

I could have sworn some where it should be at like .4.......hrmmm
I could be on crack or something though

griff1455 06-06-2005 12:55 AM

I am running a very similar setup as you and have been battling KR retard for awhile, but mine is due to an exhaust leak. Make sure that you rule out all possibilities of KR before you start chasing a ghost. I suspect that I have had this leak for some time (stress crack on #5 tube weld) but that it did not become apparent until the pulley mod. Now she gets all kinds of KR especially under a load. The fix is on the way soon ......... rewelded and thermal coated exhaust manifolds !!!!!!!!!!!!!!!!!! I know that I have some actual KR, but nowhere near the current 20+ degrees.

Damemorder 06-06-2005 01:26 AM

TPS definatly high. Search "TPS MOD" for specs.

d.denis 06-06-2005 01:37 AM

http://www.geocities.com/carnutguy/c...hancement.html

is this what you guys are talking about? If it is read it carefully!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!


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