Sensor and sensibility
I amconcerned about the amount of fuel my 2011 Nissan Navara diesel is consuming. It’s stickered values are 7.5L, 9.0L and 11.7 L/100km for extraurban, combined and urban driving conditions respectively but the best I have been able to achieve has been 10.9L/100km on a long trip down the highway with cruise control set at 100km/h. I notified the dealer at both the 1000km and 10,000km services and the response has been that the engine still needs running in. The car is now due for its 20,000km service and there has been no noticeable improvement. What can be done to fix the problem or to have Nissan repair or replace a faulty product?
Sebastian Azagra, email Tell the dealer of your concerns when you take it in for servicing and ask to have a full diagnostic check carried out on the car. Don’t accept the view that it’s still running in. It’s possible you have a faulty sensor that’s throwing the fuel economy out. CHOKINGONGAS Over the past year my 2010 dual-fuel VE Commodore sedan has had intermittent problems when running on gas. Sometimes the engine runs very rough and vibrates as if one of the gas injectors is not working. The engine check light comes on and I have to pull over, switch the engine off and switch over to petrol. No error codes are recorded. Under warranty they have replaced injectors, bench tested and serviced injectors, replaced gas pressure switch and carried out a compression and leak-down test — all to no avail. Now the dealer is suggesting I drive it there while experiencing the problem. I have tried that, only for the fault to rectify itself before I arrive. Can you offer any suggestions as to its cause and what to do next? I am desperate for a resolution. Fred Hogendoorn, email As it’s not a consistent problem you would have to think there’s an issue such as a connection or a sensor that’s faulty. Holden uses the Impco factory system. I’d find an Impco dealer and have the technical people there check it. SOOTHEMYSOOB I amgetting a shudder in the steering of my 2005 Subaru Impreza when turning slowly such as coming out of a parking spot at a shopping centre. I took it to a local mechanic to have it serviced and was told the front differential is on its way out. I contacted a Subaru dealer and explained the problem to the service department and they said it could be a solenoid at the rear of the transmission or the clutch could be grabbing and would cost between $750-$950 to fix. These quoted prices seem high. Have you heard of Subarus having front diff and transmission
Drinking problem: Afaulty sensor on a reader’s Navara might be affecting the fuel economy