Hi folks - been around for a while here and this forum. Learnt a lot and this place has been a great resource for me. I guess now it’s for me to contribute back since I have just completed a 'successful' DIY project recently.
First some backgrounder - Given the soaring COE prices, have decided to spend a bit $$ on the ride to spruce it up as it just doesn’t make sense to buy a car now. Ride has just turned 3 years old but is lightly used at only 25k km mileage.
Realised that the car has become sluggish and more thirsty. At first, I thought it could be due to our frequent (almost 99% city) driving pattern. But it was not getting any better. Visited several workshops (including AD) and there was no fault code shown.
Armed with the emission report that VICOM passed to me during the inspection , I realised that the car was running a little rich, compared to my another ride, which is of the same capacity but with direct fuel injection.
I researched on the internet went out to buy the following components:-
a) Hot film Mass Air Flow Sensor x1 (P/N 13 62 7 551 638)
b) Ignition coils x 6 (P/N 12 13 7 594 937)
After a lot of sweat and lots of effort, I managed to install the parts over the weekend. And boy, the behaviour of the engine is completely changed. The car is no longer so sluggish and the throttle response is so much more responsive than before. In fact, I took it out to the highway and I am little surprised that the cruising RPM @ 100Km/h has even dropped slightly!
I think that the parts are still in working order and hence didn’t throw any fault code – but their performance has degraded over time and the engine is compensating for it by ‘detuning’ itself.
I am still monitoring my fuel consumption – but the characteristic of the car is much improved and I am a happy man!
First some backgrounder - Given the soaring COE prices, have decided to spend a bit $$ on the ride to spruce it up as it just doesn’t make sense to buy a car now. Ride has just turned 3 years old but is lightly used at only 25k km mileage.
Realised that the car has become sluggish and more thirsty. At first, I thought it could be due to our frequent (almost 99% city) driving pattern. But it was not getting any better. Visited several workshops (including AD) and there was no fault code shown.
Armed with the emission report that VICOM passed to me during the inspection , I realised that the car was running a little rich, compared to my another ride, which is of the same capacity but with direct fuel injection.
I researched on the internet went out to buy the following components:-
a) Hot film Mass Air Flow Sensor x1 (P/N 13 62 7 551 638)
b) Ignition coils x 6 (P/N 12 13 7 594 937)
After a lot of sweat and lots of effort, I managed to install the parts over the weekend. And boy, the behaviour of the engine is completely changed. The car is no longer so sluggish and the throttle response is so much more responsive than before. In fact, I took it out to the highway and I am little surprised that the cruising RPM @ 100Km/h has even dropped slightly!
I think that the parts are still in working order and hence didn’t throw any fault code – but their performance has degraded over time and the engine is compensating for it by ‘detuning’ itself.
I am still monitoring my fuel consumption – but the characteristic of the car is much improved and I am a happy man!
