300k_logician
Well-known member
So, before I go into what I think are deficiencies, let me give a bit of context:
Before I bought my TDI (MKIV, Jetta, ALH), I was driving a 4-door 3-cylinder Geo Metro around (it was cheap). So when I got the TDI, it felt like the acceleration was amazing. Relatively.
Since I bought it at 290k miles, I have changed the Timing Belt twice in my 40k miles of owning it (Oil contamination mandated premature replacement), and didn't really figure out the "start of injection" timing calibration with the VAG-COM. Fuel economy didn't drop.
I had also been running SeaQuential Pacific B20 blends in it, and I keep the fuel tank above half full at all times.
I didn't notice much difference with the B20, but occasionally wondered about acceleration, so the last two months I've only been getting Chevron and Shell diesel. The PO reported the dealer said it needed a new turbo (occasionally I'll get a Positive Deviation code).
Anyhow, there's a certain hill I may be commuting over soon (For those of you who are in the Portland area, US-26 over the Sylvan Hill), and the car seems to have very terrible acceleration on any incline, this one especially. (like I can't pass someone on the Freeway until the terrain levels out)
So, in the Diagnosing and Fixing low boost, we learned about the N-75. I swapped the parts and headed up the hill. Traffic volumes mandated that I begin at 50MPH. I was in 4th. Pedal to the floor... 50MPH.
3rd. Pedal to the floor, 50MPH.
The turbo didn't kick off this time, though, although it is a place where it commonly will happen if I'm not careful.
I know, from prior experience, 5th gear will carry me up if I begin at 60.
Wikipedia sources state that the hill grade is about 6.5%. Am I the only one who has this issue on this steep of a hill? Or is that supposed to be how a 90hp engine performs?
Thanks for the help guys.
Before I bought my TDI (MKIV, Jetta, ALH), I was driving a 4-door 3-cylinder Geo Metro around (it was cheap). So when I got the TDI, it felt like the acceleration was amazing. Relatively.
Since I bought it at 290k miles, I have changed the Timing Belt twice in my 40k miles of owning it (Oil contamination mandated premature replacement), and didn't really figure out the "start of injection" timing calibration with the VAG-COM. Fuel economy didn't drop.
I had also been running SeaQuential Pacific B20 blends in it, and I keep the fuel tank above half full at all times.
I didn't notice much difference with the B20, but occasionally wondered about acceleration, so the last two months I've only been getting Chevron and Shell diesel. The PO reported the dealer said it needed a new turbo (occasionally I'll get a Positive Deviation code).
Anyhow, there's a certain hill I may be commuting over soon (For those of you who are in the Portland area, US-26 over the Sylvan Hill), and the car seems to have very terrible acceleration on any incline, this one especially. (like I can't pass someone on the Freeway until the terrain levels out)
So, in the Diagnosing and Fixing low boost, we learned about the N-75. I swapped the parts and headed up the hill. Traffic volumes mandated that I begin at 50MPH. I was in 4th. Pedal to the floor... 50MPH.
3rd. Pedal to the floor, 50MPH.
The turbo didn't kick off this time, though, although it is a place where it commonly will happen if I'm not careful.
I know, from prior experience, 5th gear will carry me up if I begin at 60.
Wikipedia sources state that the hill grade is about 6.5%. Am I the only one who has this issue on this steep of a hill? Or is that supposed to be how a 90hp engine performs?
Thanks for the help guys.