Some scan tool data
#1
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Some scan tool data
Finally got to use my new scan tool today.
MAT - 110 (moving) 140 (idling)
A/F - 0 all the time (? - condition shows lean/rich in a seemingly normal fashion)
Boost % - 100 all the time (?)
KR at WOT - 0 or 3-7 degrees typically
Timing at WOT - 6-9 degrees
TC slip - 12 rpm cruising 250 rpm WOT
MAF topped 55k g/* near redline
Quad driver 1 was momentarilly marked bad during moderate acceleration just once that I saw.
Any thoughts?
MAT - 110 (moving) 140 (idling)
A/F - 0 all the time (? - condition shows lean/rich in a seemingly normal fashion)
Boost % - 100 all the time (?)
KR at WOT - 0 or 3-7 degrees typically
Timing at WOT - 6-9 degrees
TC slip - 12 rpm cruising 250 rpm WOT
MAF topped 55k g/* near redline
Quad driver 1 was momentarilly marked bad during moderate acceleration just once that I saw.
Any thoughts?
#2
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Re: Some scan tool data
Originally Posted by jwikoff99
Finally got to use my new scan tool today.
1. MAT - 110 (moving) 140 (idling)
2 A/F - 0 all the time (? - condition shows lean/rich in a seemingly normal fashion)
3 Boost % - 100 all the time (?)
4 KR at WOT - 0 or 3-7 degrees typically
5 Timing at WOT - 6-9 degrees
6 TC slip - 12 rpm cruising 250 rpm WOT
7 MAF topped 55k g/* near redline
8 Quad driver 1 was momentarilly marked bad during moderate acceleration just once that I saw.
Any thoughts?
1. MAT - 110 (moving) 140 (idling)
2 A/F - 0 all the time (? - condition shows lean/rich in a seemingly normal fashion)
3 Boost % - 100 all the time (?)
4 KR at WOT - 0 or 3-7 degrees typically
5 Timing at WOT - 6-9 degrees
6 TC slip - 12 rpm cruising 250 rpm WOT
7 MAF topped 55k g/* near redline
8 Quad driver 1 was momentarilly marked bad during moderate acceleration just once that I saw.
Any thoughts?
2 The A/F ratio won't come up correctly I'm sure because of the use of a narrow band o2 sensor. It'* simply an on/off switch.
3 IIRC It'* simply the amount of boost the PCM is not 'withholding'
4. A touch high but I've seen worse. Lower your IAT temps
5. 1-2* lower than I see, but I like toluene.
6. When the TC is locked you should only get a few rpm like you are. When you go WOT it should fully slip, like it is.
7. Looks good
8. Not sure what that'* about.
#3
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I'd give the Quad Driver either a slow boost sol or the TCC not unlocking as quick as the PCM wanted. It briefly displayed but didn't set a real code.
#4
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Some scan observation today showed slow, steady knock counts above 5 psi boost, around 60-100% throttle. It would count two fairly quickly when rolling the thottle that high, then slow down, but still increase counts, like one a second or so. Couldn't be hot, the IAT showed ~74 degrees.
Sound like anything in particular?
Sound like anything in particular?
#5
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Originally Posted by jwikoff99
Some scan observation today showed slow, steady knock counts above 5 psi boost, around 60-100% throttle. It would count two fairly quickly when rolling the thottle that high, then slow down, but still increase counts, like one a second or so. Couldn't be hot, the IAT showed ~74 degrees.
Sound like anything in particular?
Sound like anything in particular?
#7
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Heated up as in warmed up or warmer than normal? I don't pay much attention to stuff before it hits the thermo temp. But I do get slightly higher knock levels if it'* hot.
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Originally Posted by jwikoff99
Heated up as in warmed up or warmer than normal? I don't pay much attention to stuff before it hits the thermo temp. But I do get slightly higher knock levels if it'* hot.
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Well even though it'* not a real fair comaprison between our motors... When I took off my old heads, the rear bank had a broken valve guide. This let oil into the center rear cylinder and was probably the cause of my knock. It was slower the warmer it got too. I think it'* from the oil heating up, becoming thinner, and getting past the broken valve guide easier.
I'm not trying to say you have a broken valve guide but you may have worn valve seals or worn LIM gaskets which could do the same thing. I got knock at 50% or more throttle when it was warmed up.
Just an idea. What do your plugs look like? (sorry if I already asked you that).
I'm not trying to say you have a broken valve guide but you may have worn valve seals or worn LIM gaskets which could do the same thing. I got knock at 50% or more throttle when it was warmed up.
Just an idea. What do your plugs look like? (sorry if I already asked you that).