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Volkswagen TDI Models

2483 messages,  Last post on Dec 05, 2009 at 7:50 PM

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#2392 of 2483 Re: 2000 Jetta TDI - Intermittent starting problems [trujij] by elias Jan 23, 2008 (12:31 pm)
Replying to: trujij (Jan 23, 2008 7:35 am) tru j , it might start with the new-made-key if you wait a half hour and retry. (If it detected wrong-resistor-value in the original valet key, and you tried it a few times in a row, i think it might lock-out the ignition for 15 or 30 minutes. some cars do that. not sure if your VW is one such...) Replies to this message: trujij (Jan 23, 2008 3:11 pm)
#2393 of 2483 Re: 2000 Jetta TDI - Intermittent starting problems [elias] by trujij Jan 23, 2008 (3:11 pm)
Replying to: elias (Jan 23, 2008 12:31 pm) i'll try that--thanks!
#2394 of 2483 01 Golf TDI not starting fuel filter? by jshlev Mar 12, 2008 (1:41 pm)
Hi There everyone, My TDI usually is hard to start on cold mornings(no heat block yet) but just yesterday it now will not fire and run. The battery is fine and the starter seems to be doing it's job but maybe it's not getting fuel? Should I change the fuel filter to see if that is the problem? Is there a way to check to see if that is the problem. I read on a previous post about a fuel line problem and they put diesel in a can to bypass the filter? Would that be a test? Replies to this message: pludlow (Mar 13, 2008 12:09 pm) bpeebles (Mar 13, 2008 4:58 pm)
#2395 of 2483 Re: 01 Golf TDI not starting fuel filter? [jshlev] by pludlow Mar 13, 2008 (12:09 pm)
Replying to: jshlev (Mar 12, 2008 1:41 pm) I doubt it's your fuel filter. My experience is with a 4 cylinder diesel if one of the glow plugs has burned out, starting will be very difficult. This is based on owning three 4 cylinder diesels with >500k mi. To check the glow plugs, pull the electrical connector caps and measure the resistance of each to a good contact with the engine block. You will see either low resistance of <10 Ohms or an open circuit which means burned out. Removal & replacement is simple, just be sure to clean the area around the plug before removing it. Around 100k mi I replaced one on my TDI for the same symptoms, and several on my Ford Tempo over 300kmi and lots on my Peugeot, but it was French! If it's your fuel filter you would likely see the problem at any temperature. Waxing becomes a problem after operating for a short time. For sustained cold weather below 10deg F I would use a good wax inhibitor.
#2396 of 2483 Re: 01 Golf TDI not starting fuel filter? [jshlev] by bpeebles Mar 13, 2008 (4:58 pm)
Replying to: jshlev (Mar 12, 2008 1:41 pm) You are correct in thinking it is NOT the fuel filter. A plugged fuelFilter does not often cause STARTING issues. Instead, a plugged filter will show itself as you are driving asking for power with the throttle. (more fule flow)   Your IQ is the most critical thing when it comes to starting TDI engine. With the IQ adjusted to slightly above the nominal setting, a TDI will start very easilly in -15F temparatures.   IQ = Injection Quality (aka timing of injection pulses)
#2397 of 2483 2000 Jetta TDI 200,000 miles by jzauto May 16, 2008 (3:30 pm)
Engine misfires at idle only. Sometimes turning the A/C on will make the miss disappear. Seams to be a lean condition that changes with different attempts to locate it. For example: Cracking the #3 cylinder injection line slightly will smooth it up at times. Closing the intake butterfly almost to the point of stalling seems to clear the misfire.
#2398 of 2483 MPR Problem by miam May 17, 2008 (1:36 pm)
I recently purchased a 2005 Jetta TDI in Vancouver WA from a dealer and the first month I owned this car it was in the dealers shop. After reading your blog about crappy service at dealers, I am now requesting that anyone who might know of a good mechanic in the Portland OR area let me know, Please! The first sign of problem was that at a stop light the engine idol was really "chugging." The whole car would shake violently and I took it back and said "I've owned a diesel before, but this can't be right." In fact I was right and the car had more problems than I knew. The dealership said that the fuel injection lines had been switched, that the intake was connected to the outtake and vice a versa. Since they "corrected" this problem my MPG have dropped by 20 mpg (from 50 to 30). Does anyone know anything about this? OR know any mechanics that are trust worthy?   THanks
#2399 of 2483 CARBON BUILD-UP ON 02 GOLF TDI TURBO by vwguy1776 May 23, 2008 (5:28 am)
hi, I recently had to shell out $2000 to replace my turbo that failed due to excessive carbon buildup. I own an 02 Golf TDI with 77,000 miles on it. The extended warranty company is balking at covering the cost due to the presence of this excessive carbon. I take good care of teh car and am pissed. does anyone else have this problem? any suggestions when i sue the extended warranty company? DOES ANYONE KNOW OF A CLASS-ACTION SUIT AGAINST VW FOR THE SHITTY TURBO IN MY GOLF? Replies to this message: bpeebles (May 23, 2008 3:50 pm) ruking1 (May 23, 2008 4:16 pm)
#2400 of 2483 Re: CARBON BUILD-UP ON 02 GOLF TDI TURBO [vwguy1776] by bpeebles May 23, 2008 (3:50 pm)
Replying to: vwguy1776 (May 23, 2008 5:28 am) Comon.... You are not serious about blaming VW for this? VW does not even manufacture the turbocahrger. It is built by one of the 3 companies in the world that builds turbochargers.   Most likely the problem with your turbocharger was the DRIVER. There is a reason that you need to use full-throttle accelleration at least once per tank of fuel. TO KEEP THE CARBON BLOWN OUT OF THE TURBOCHARGER!   Besides, your old turbocharger is likely to be good. I hope your repair-shop did not KEEP your expensive trubocharger. I am sure THEY sent it out for rebuild. (and got several 100 dollars for it)   As a pre-warning to you... the INTAKE-PLENUM on TDIs is known to get plugged up with carbon and needs to be cleaned. (around 80-100K miles) Did your service-poeple include this cleaning in the $2000 bill? If not, you will be in the shop again soon...
#2401 of 2483 Re: CARBON BUILD-UP ON 02 GOLF TDI TURBO [vwguy1776] by ruking1 May 23, 2008 (4:16 pm)
Replying to: vwguy1776 (May 23, 2008 5:28 am) Sorry to hear about your turbo failure. I really can do nothing about the spilled milk portion, but can offer up suggestions on how to make the new turbo you bought go longer than 77,000.   Mine is at 107,000 miles. The goals are a min of 500,000 miles plus. The EGR and intake manifold was inspected during the 100k mile TB/WP change. It was pronounced good to go for least another 100k by one of the regional gurus. It was blacked, but there was NO carbon/soot build up.   So when your water temp is cold (aka, less than normal operating temp app 190 degrees on your temp gauge) run your revs (through the gears) to not more than 2,500 rpms. When it is warm (aka app 190 degrees on your temp gauge) run your revs (through the gears) to app 3,500 rpms.   You CAN rev to 5,100 rpms BUT much over 3800 rpms does NOT much good. (economy, power, speed, wise) This type of up and down reving keeps the turbo's vanes from getting stuck.   Some might have different definitions, but you will want to run the car slightly ahead of the torque curve (again slightly to more aggressively). You do NOT want to wind it up like a Honda VTEC then shift. But you want to shift (slightly) before and let the torque pull you to where you want to go. So while I normally run the engine at higher rpms ( for the reasons stated) when I want max mpg, I run it between 1700- 2000 rpms(sweet spot) . Again, when you feel the need to down shift let the revs take you to between 2,500 to 3,500 and this will actually keep the turbo issues at bay while you can do the economy range if you so chose.

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