I would like some help from fellow Pak-Wheelers regarding the issue I posted earlier. I recently had my ECU wiring changed from Toyota Motors (Abpara Islamabad - This was their diagnosis for the Check Engine Light. I went ahead and got it changed, car has been working fine since then - The car was breaking down earlier).
After a while, the check engine light appeared again. Upon diagnosis we read the error code of "System too lean". Now the three possible sources of the error given to me by the Toyota diagnosis technician were:
1. Dirty MAF sensor.
2. Clogged Fuel filter.
3. Bad fuel pump.
I had the MAF sensor cleaned and ran the car for about 1 week without any issues in which we went back and forth from DHA Phase 2 to Islamabad multiple times in a single day.
No problem appeared nor did the Check Engine Light turn on. But today as I was driving to my office the Check Engine Light came on and I felt a loss of power in the acceleration - not a lot but there was detectable power loss.
Through out the week that I drove the car I did feel at times that the engine was forcefully pulling fuel at times causing the whole car to jerk (at idle).
Now, my first question is, that could it be that the fuel pump has gone bad? Does a bad fuel pump have any particular symptoms that I need to watch out for? or is it the fuel filter.
My second question is, which Fuel filter is installed in the Belta? I don't know which one is installed, but from what I read on this forum I have concluded that I could use the fuel filter for the 2010 Toyota Corolla GLI?
The guys at Toyota have told me that they will have to order the filter and it will cost around PKR 15,000. A shop at Saddar has told me the cost for the filter as 6600 (OEM filter). Noone told me the part code though, the guy at the Saddar shop simply said that the same filter as that installed in Vitz will be used.
NOTE: The fuel filter is due for a change anyways...
Thanks and Regards