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VW Jetta TDI

3592 messages,  Last post on Nov 11, 2009 at 10:10 AM

You are in the Volkswagen Jetta Forum. Your Hosts are pat & karens

What is this discussion about? Volkswagen Jetta, Biodiesel, Diesel, Sedan


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#3135 of 3592
Re: new tdi [ruking1] by Mr_Shiftright HOST
Jul 04, 2009 (11:46 am)
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Replying to: ruking1 (Jul 04, 2009 9:45 am)

Putting gas in a diesel car is probably worse than putting diesel in a gas car--brcause the diesel will actually run for a while and may cause serious damage. The gas car would just conk out in about 100 ft.
#3136 of 3592
Re: new tdi [jkinzel] by tdifun
Jul 06, 2009 (8:50 am)
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Replying to: jkinzel (Jul 04, 2009 8:30 am)

LOL, yeah it was a slip up on typing. Yes, I put diesel in and got 28 MPG for the first tank.
#3137 of 3592
Loss of Power but no MIL by danstdi
Jul 06, 2009 (8:51 am)
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Have a 2001 with 304,000 km. Always loved this car. I have maintained it faithfully. At the moment, I am about 60% through the life of my 2nd replacement timing belt. Use 5/8 of an once of Raycor Cetane booster every fill.
 
What I have noticed recently is a loss of power when I reach the 2800 RPM band. More noticeable up hills. Interestingly enough, I am not getting any warning from the MIL or any other lamp on the dash. I know they are working as they light up on engine start as perscribed. This sort of thing happened at just over 100,000 km a few years ago and was told it was my mass air flow sensor (but I did get a MIL warning on my dash when this happened). That was replaced under the emission warranty.
 
Usually, anytime something is wrong, some lamp would tell me so on the dash. Not his time. Due for an oil change next week - I'll ask the mechanic - just wondering if anyone has had a similar problem?
 
I plan to run this car to 500,000 - I enjoy driving it very much.
#3138 of 3592
Re: new tdi [tdifun] by ruking1
Jul 06, 2009 (8:52 am)
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Replying to: tdifun (Jul 06, 2009 8:50 am)

Like jkinzel, I needed to ingrain in myself to NEVER make even the mistake of pulling up to a "GAS" pump with the diesel !!!
#3139 of 3592
Re: Loss of Power but no MIL [danstdi] by bpeebles
Jul 06, 2009 (5:12 pm)
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Replying to: danstdi (Jul 06, 2009 8:51 am)

Sounds like you should check that the VNT actuator is moving its full distance.
Also would not hurt to hook up to VagCom and check your IQ (Injection Quality).
 
Additionally, if you have never cleaned your intake-manifold. I would put money on the fact that your intake-manifold needs to be removed and cleaned. (It is a KNOWN issue with running North-American crappy diesel in an EGR-equiped engine.)
#3140 of 3592
Re: new tdi [tdifun] by shrifty
Jul 07, 2009 (4:51 pm)
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Replying to: tdifun (Jul 06, 2009 8:50 am)

Not bad for a start, it will get better as you put some miles on. Last night I was driving rather spirited through the Bronx/Queens area and had about 27 MPG (including being stuck in some construction). Highway driving around 75 or so I am averaging around 42 MPG, currently a bit over 22K.
 
A question for those far more experienced with diesels than myself, I can't recall what I've read/heard about max mileage and when you can expect to see it. If I'm not mistaken, is it around 40-50K?
#3141 of 3592
Re: new tdi [shrifty] by ruking1
Jul 07, 2009 (5:24 pm)
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Replying to: shrifty (Jul 07, 2009 4:51 pm)

Correct, it is anywhere from 30,000 to 60,000 miles for full break in ( aka, app 550 psi compression, new comes in app 410- 425 psi). This in in stark contrast to gasser engines 1,000 to 4,000 miles.
#3142 of 3592
Re: Loss of Power but no MIL [bpeebles] by danstdi
Jul 08, 2009 (9:04 am)
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Replying to: bpeebles (Jul 06, 2009 5:12 pm)

Thanks for that info!
#3143 of 3592
Low Sulfur instead of Ultra 2009 TDI by 2newonesfor09
Jul 13, 2009 (3:39 pm)
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Does anyone know if there is permanent damage if you get low sulfur for fuel in the new TDI. I'm in New York, and they don't always label the pumps. (like whats 40 rating). I put a tank of LSD not ULSD. Car runs, no problem, but is there long term problems. Won't make this mistake again, found a station with proper labels, but a little more expensive.
#3144 of 3592
Re: Low Sulfur instead of Ultra 2009 TDI [2newonesfor09] by gagrice
Jul 13, 2009 (4:52 pm)
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Replying to: 2newonesfor09 (Jul 13, 2009 3:39 pm)

The 40 could be the cetane rating. I think I would add a little power service. The higher sulfur can be an issue. I doubt it will cause you any grief. LSD is supposedly 30 PPM vs 15 PPM for ULSD. When most diesel sold for years was 500 PPM or more. Look for a high cetane number. That will make a difference in the way your TDI performs.

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