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Message: [QUOTE="greyford1979, post: 1480650, member: 9956"] [url]https://www.youtube.com/watch?v=2et-WY-s0c0&feature=youtu.be[/url] Well my truck has been running great until I went to leave work this afternoon. Turned on the truck and noticed it started to miss at idle. While driving there was no loss of power and seamed to drive just like normal. No CEL at driving or at idle. After the drive home it seamed to idle normal. Ate and waited about an hour, turned on the truck and the misfire was back during idle. Decided to run Auto Enginuity to see what comes up. Did have some codes, most definitely not related. Here's what I tested so far and codes that came up. First 2 are just initial codes that came up before testing. Truck is a 2000, PIS 160/30 injectors, Swamps IDM, KC38R turbo, Exhaust, PHP Hydra with PHP tunes, and Sam Wyse trans. Youtube link is my truck idling after I got home and let it cool down. Did some net searching and again come up with all kinds of different things. Any info is greatly appreciated, hope some of the gurus will chime in. GEM/CENTRAL TIMER B1352 Ignition Key in circuit failure P1876 T case 2wd circuit failure B1302 Accessory relay failure OVERHEAD TRIP COMPUTER P0500 P0500 Vehicle speed sensor A malfunction B1203 Fuel sender circuit failure Now what came up during testing. ENHANCED POWERTRAIN P0603 Internal control module keep alive memory error P0541 Intake air temp A current low(not hooked up) INJECTOR BUZZ TEST P1298 Injector drive module failure P1293 Injector high side open bank 1 P1294 Injector high side open bank 2 I couldn't really tell much of a difference when the injectors all fired separately. CONTRIBUTION TEST P0284 Cylinder 8 injector KEY ON ENGINE RUNNING P0476 Exhaust pressure control valve a range performance(does not have EBP valve). KEY ON ENGINE OFF P1298 Injector drive module failure P1293 Injector high side open bank 1 P1294 Injector high side open bank 2 Also monitered a few things during idle Pulse width .15-17 ICP 475-500 PSI ICP volts .78-.85 ICP duty cycle 8.98 [/QUOTE]