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Old 09-28-2023, 01:19 PM   #1
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ewo1's Avatar
Join Date: May 2015
Location: Central Tx.
Posts: 1,551
Year: 1999
Chassis: Amtran / International
Engine: DT466E HT 250HP - Md3060
DT466- Updated I6 EVRT/VGT Diagnostics - tech tip

Title: Updated I6 EVRT/VGT Diagnostics Check Sheet and Turbocharger Repair Procedures for engines that exhibit DTC 353 / 354

Applies To: 2004- 2006 MY EGR DT 466 and 570 with EVRT/VGT Turbos with ESN 2,000,001 - ESN 3,000,000

Customer Complaints:

1. Low Power (Can be intermittent)
2. No Acceleration
3. Excessive Smoke.
4. Engine Light on , DTC 353 and /or DTC354 Active or Inactive

Possible Diagnostic Codes DTC 353 - Variable Geometry Turbo control over duty cycle. DTC 354 - Variable Geometry Turbo control under duty cycle.

Possible Causes:

The ECM logs DTC 353 and/or DTC 354 codes when the Exhaust Back Pressure
(EBP) is too high or too low for specific engine operating conditions.

Turbocharger actuator (SRA) binding or sticking.- Repairable or Replacable

Turbocharger linkage binding or sticking. - Repairable or Replacable

Pivot Shaft binding in the actuator (SRA) Flange Bushings. - Replacable as Pivot Shaft Flange Kit

Intermittent or low voltage/ground to turbo actuator (SRA). - Repairable

Incorrect pressure reading from the EBP sensor. - Repairable

The turbocharger vanes or other EVRT/VGT components internally binding, sticking or damaged.- May Not Be Repairable , May need the Turbocharger replaced.

Plugged/damaged exhaust system or catalyst/muffler. - Repairable

This doc is 6 pages. download it / print it out and save for future reference.
Attached Files
File Type: pdf Dt466-Updated I6 EVRT:VGT Diagnostics.pdf (337.0 KB, 1 views)

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