my truck was originaly a 4.3 and when I bought it the previous owner put a 5.3 in it. It was throwing an engine code and when we hooked the snapon diagnostics up to it, it showed P0300(random miss fire). Daniel went into the miss fire information for the cylinders and it only showed through 6 cylinders. What could cause this? I know the 5.3 couldnt run off the 4.3 computer. So why wouldnt it show all 8 cylinders on the snap on computer?
Bump. Im really curious to see what the issue is since Im the one that couldn't get the computer to read right.
DANIEL CAMMED SS 13.46 @ 98.17-- 8.58 @ 80.31
2003 Silverado SS / LQ9 6.0L / Wheatley 93 Octane Tune / 224/228 .581 .588 110lsa / Patriot Gold Dual Springs / Comp Hardened Push Rods / Circle D 3800 stall / Pacesetter LT's / 4:10 Gears / Transgo HD-2 Shift Kit / K & N Cold Air Intake / Corvette Servo / Aeroforce Interceptor / Autometer Narrorband(Wideband on the way) / Mobile 1 Synthetic / Single Chamber Flows with X Pipe / Cats Delete with Cutouts
Did you use the vin number?
Did it ever run normal without a misfire?
2013 CC 5.3
81 C10 LS1 project
get the pcm flashed with a 5.3L calibration and start from there.
Nelson Performance
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'94 Chevy Truck: 8.9 et, 408 twins
No didnt even look at the vin. I just entered it in the snap on. The year model and selected 5.3. Ive always done that if I know the year model truck.
DANIEL CAMMED SS 13.46 @ 98.17-- 8.58 @ 80.31
2003 Silverado SS / LQ9 6.0L / Wheatley 93 Octane Tune / 224/228 .581 .588 110lsa / Patriot Gold Dual Springs / Comp Hardened Push Rods / Circle D 3800 stall / Pacesetter LT's / 4:10 Gears / Transgo HD-2 Shift Kit / K & N Cold Air Intake / Corvette Servo / Aeroforce Interceptor / Autometer Narrorband(Wideband on the way) / Mobile 1 Synthetic / Single Chamber Flows with X Pipe / Cats Delete with Cutouts
Well He is going to be calling you soon to get a tune from you.Originally Posted by farmtruc
DANIEL CAMMED SS 13.46 @ 98.17-- 8.58 @ 80.31
2003 Silverado SS / LQ9 6.0L / Wheatley 93 Octane Tune / 224/228 .581 .588 110lsa / Patriot Gold Dual Springs / Comp Hardened Push Rods / Circle D 3800 stall / Pacesetter LT's / 4:10 Gears / Transgo HD-2 Shift Kit / K & N Cold Air Intake / Corvette Servo / Aeroforce Interceptor / Autometer Narrorband(Wideband on the way) / Mobile 1 Synthetic / Single Chamber Flows with X Pipe / Cats Delete with Cutouts
ok great! thanks for the heads up and referral.
Nelson Performance
FastestTruckList.com
NP on Facebook
Youtube Channel
'94 Chevy Truck: 8.9 et, 408 twins
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