Failed buzz test and codes - Ford Powerstroke Diesel Forum
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Old 01-25-2012, 01:49 PM
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Failed buzz test and codes

Trucks been making a "ticking" sound coming from drivers side bank. Can only describe it as it sounding like a gas engine with a loose rocker arm. only would do it between 25-45 mph at first and around 1700 rpm. Now does it at idle just not as loud as when its at 1700rpm.Tried running buzz test but all 8 cylinders failed. Tried unplugging injectors individually as engine ran but no change it sound. checked all connections to under valve harness and all seemed good.

Codes:
P1670 Electronic feedback signal not detected
P1316 injector drive module codes detected
P1247 Turbocharger boost pressure low
P1248 Turbocharger boost pressure not detected

Last edited by Randee Bowknee; 01-25-2012 at 01:53 PM. Reason: corrections
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