A vehicle was dropped off to us and the owner noted that is was down in power, but using heaps more fuel, client also noted the check engine light was illuminated ???

After receiving authorisation to commence a Test/ Diagnostic Service, we connected our scan tool & checked the fault codes logged. We located an EGR valve fault code and a turbo boost issue. Upon clearing these codes we road tested and rechecked diagnostic trouble codes. Unfortunately, the EGR valve fault code had relogged but the turbo boost fault did not re log as a fault code, at this stage.

As we identified a possible EGR valve fault, we liaised with client advising valve needed to be removed & have static testing completed to verify fault. After dismantling the EGR valve from the intake manifold & performing a static operational test, all checks appear OK.

Next step was to reinspect vehicle. During EGR valve removal it was noted that there was extensive carbon build up inside the manifold runners which could be potentially causing flow issues in the intake manifold and possible EGR anomalies. We spoke again with our client & advised the EGR Valve was operationally OK and that an expensive component was not required for replacement Client was relieved!

Our next step was to dismantle & clean the intake manifold. This repair was complete, vehicle was reassembled & road tested. There was instant power gain and no relog of fault codes or check engine light on. We kept the vehicle overnight for cold start checks/ running, all checks appear OK, clients vehicle was released and has been running for 10 days trouble free....another satisfied customer of D & D Mechanical & 4WD