Quote:
Originally Posted by fnasir
Thanks for your reply. This is Nissan Cefiro model 2006 with a V6 engine (VQ23). http://www.ghandharanissan.com.pk/cefiro.htm. The servicing of the air inlet valve was to clean the carbin. The mileage is 43000km. What could be the reason of rpm going up and down. By the way there was no problem before this service. Look forward to your reply. |
If there was no problem before this service, why was this 'cleaning' performed at all? By whom? (Normally at 43k there is no reason for 'cleanin' - maybe airfilter swap.). Also platinum plugs do last 100.000km (60k miles).
As said, highly possible theres now air leak in the gaskets/tubings at 'serviced' area and/or loose/open connectors. Leaking air bypasses airflow measurement (MAF) and ECU computer is fooled - thus the fuel injection becomes erroneus. Self diagnostics may give an error code pointing to the problem. This repair shop should diagnose it plus repair what they broke - free.
If the service was done in the shop(s) mentioned above, bring your vehicle back and go through the problem with a service mgr. They should repair it free... If not, contact the head office
http://www.ghandharanissan.com.pk/contact.htm . I suspect Cefiro is quite rare there? If so, typically only main office service dpt has competent =trained service personnel
