lots of knock but at low loads/rpm
05-30-2005, 11:01 AM
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lots of knock but at low loads/rpm What causes this? I'm getting up to 11 deg. of knock at low rpm (1100-2200) and low load under normal driving conditions. It doesn't do it every time just here and there. It always seems to be when I take off in first gear though. I'm using the stock timing table. I already raised the noise floor to 1.9 to try to desensitize the knocks since I have a noisy valvetrain with the new motor.
Any suggestions?
Thanks
Frank
Any suggestions?
Thanks
Frank
05-30-2005, 11:33 AM
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I have never had to go anymore than 1.4 , You might check PE enable set it to 20% TPS and 85 KPA and see if it goes away and if your running anymore than about 10-15 deg of timing at 1100-2200 its probally to much If you have a noisy valve train it could be the problem You can also limit the amount of PE knock retard to like -4 and see if gets past the problem and cleans up. Is this at WOT only?
05-30-2005, 11:43 AM
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no it's just at part throttle normal driving. WOT is fine I just get occasional kr in the first couple gears that I can't seem to shake. damn 98s 
05-30-2005, 04:45 PM
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Low load, low RPM is where EGR is supposed to be
active and there is an EGR adder table that pushes
a lot of extra spark. If you removed EGR and deleted
the codes, but did not disable the EGR and/or zero
the EGR adder table it will keep on adding spark as if
you were running the EGR-diluted cylinder mixture.
Don't know the state of the EGR on your car but '98
would have had it originally.
active and there is an EGR adder table that pushes
a lot of extra spark. If you removed EGR and deleted
the codes, but did not disable the EGR and/or zero
the EGR adder table it will keep on adding spark as if
you were running the EGR-diluted cylinder mixture.
Don't know the state of the EGR on your car but '98
would have had it originally.
I never thought about that. I shut off the codes, but never zeroed out the table.Trending Topics
05-30-2005, 07:01 PM
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I just looked in edit, I don't have one of those tables. Only thing I see is a temp vs advance table, and that's not it. Maybe the 98s don't have that table.
Wonder If I could copy a 01 timing table and use it since they didn't have egr?
Wonder If I could copy a 01 timing table and use it since they didn't have egr?
05-30-2005, 07:03 PM
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Originally Posted by Boosted One
I just looked in edit, I don't have one of those tables. Only thing I see is a temp vs advance table, and that's not it. Maybe the 98s don't have that table.
Wonder If I could copy a 01 timing table and use it since they didn't have egr?
Wonder If I could copy a 01 timing table and use it since they didn't have egr?
