Originally Posted by KW Baraka
So you had the shudder even with the shifter in third gear (Drive) ?
Mmmmm.......wonder if it could be the EGR valve
what if you have no codes and what should i look for on a scanner? what if it a studder shudder at just before 1-2 shift and just after and a just after 2-3 shift shutter?
Will the scanner even show this egr prob as going in and out of open and closed loop?
does going back into closed loop from open loop be a egr prob with no light on?
i think i have a egr prob.
sorry to hi jack..
'92 Astro with '95 4bolt 355 LT1; decked .010'', hand ported 374s & intake (David Vizard tech), 10.95:1cr, 1.94/1.5", farmed out EFI 24x, 2001 LS1 pcm, VooDoo 211/219*, w/1.7" rr .574"/583", '92 4L60 w/'96 S10 torq conv, shift kit & corvette servo, G80 GT4/3.73:1 255/70-15s, 2" front lift, poly bushings, ported Granny's Speed Shop headers, true duals, 2 long Cherry Bombs used for resonators, 2 long Thrush Turbo mufflers, local tune under an Oak tree. 4 year project/swap.