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<p>[QUOTE=&quot;saml.burris14, post: 12348725, member: 342390&quot;]Please read full post before replying! Thank you!</p><p><br /></p><p>My problem:</p><ol> <li>Lacking power on takeoff/ struggles to get up to speed. Cant get over 45-50</li> <li>Low boost reading low for what it should be according to manual</li> <li>Exhaust back pressure reading weird on scanner. Engine will run noticeably different if unplugged.(check engine light comes on when unplugged)</li> </ol><p>Parameters:</p><ul> <li>Engine: dt466 egr 245hp (not dt466e was after the “e” version and before the maxxforce)<br /> </li> <li>Turbo: Vgt s300 series (fresh overhaul, engine had running issues prior to turbo over haul)(also spins freely)<br /> </li> <li>ICP @ idle: actual~800, scanner~800<br /> </li> <li>ICP @ WOT no load not driving: actual~2800, scanner ~2800</li> <li>ICP @ WOT loaded not driving: actual~3500, scanner~3500&nbsp;&nbsp; <br /> </li> <li>ICP [USER=311475]@WOT[/USER] loaded while driving: actual~4000, scanner ~3900<br /> </li> <li>Boost pressure loaded while driving: actual 15 scanner 17-19<br /> </li> <li>Fuel delivery pressure @ idle: actual ~56 scanner 56<br /> </li> <li>EGR: blocked off for diagnosis <br /> </li> <li>Boost leaks: no (pressure checked charge air cooler with piping)</li> <li>Exhaust back pressure @ idle: actual~0 scanner ~12</li> <li>Exhaust back pressure loaded not driving: actual 25 scanner ~35</li> </ul><p>Tests completed:</p><ul> <li>Tested voltages at EBP connecter all passed</li> <li>Tested resistance at EBP connector all passed</li> <li>Turbo passes bounce test</li> </ul><p>Dtc codes: no engine codes. Does have body codes but i think are irrelevant?</p><p><br /></p><p>Shop manual with specs: <a href="https://www.manualslib.com/manual/1837761/Navistar-International-Dt-466.html?page=608#manual" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.manualslib.com/manual/1837761/Navistar-International-Dt-466.html?page=608#manual" rel="nofollow">Navistar International DT 466 Diagnostic/Troubleshooting Manual (Page 608 of 658) | ManualsLib</a></p><p><br /></p><p>need help this is stumping me pretty bad.</p><p><br /></p><p>Thank you for any help!</p><p>-Sam[/QUOTE]</p><p><br /></p>

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