On cold mornings my 2005.5 Jetta TDI is hard to start. I glow the plugs then turn the key to start the engine. If I miss the first start I have to hold the accelerator to the floor and crank. Eventually the car will start. The car just returned from a very thorough check up, and no code errors. Anyone out there having similar problems?
Run the plug's a couple time's instead of one. For an example on my work truck I run the plugs 3-5 even more depending the outside temp. Also I don't crank more then 20 second's. This work's even in extreme temp's such as -25F. And if you don't have the patience for this there's always starting fluid.
SOURCE: Golf GT Tdi 2001 Turbo problem
may be a build up of carbon, there are cleaners for your system to clear out carbon deposits and burn higher octane fuel and give it a good run.
SOURCE: Golf TDI 1998 problem with cold start
hi change the glow plugs and no its not normall there should be no air in the system it is either sucking air or it has not been bled properly last time system was worked on usually when changing the fiter check the whole system for signs of leaks if non found bled the system until you get rid of them yates210456
SOURCE: 03 VW Jetta TDI
I realize it's a little late in this game but I had a similar problem with my 2003 TDI. Sometimes it just wouldn't start, Dealer came and picked it up once to replace the battery under warranty and did all sorts of diagnostics to no avail. My brother suggested the ignition switch, so I watched it for several weeks and sure enough, new switch under warranty, problem gone for 4 years now.
SOURCE: 2000 vw jetta tdi glow plug problem ?
Ok , ok. Give me some more information and we'll solve this. We're talking about a jetta TDI 2000 with an ALH engine code I figure.
#1 Do you have an faults recorded in the ECM like a check engine.
#2 Are you using synthetic oil 5W40 preferably Castrol?
#3 How old is your fuel filter?
SOURCE: 2002 Jetta TDI has no power to glow plug buss at startup
replace the relay but check connections first as often connection get hot and corroded.failing which buy a push button switch use a relay and and some heavy wire to and from relay to the heaters and work them manually.you could try seperating the relay and cleaning the connections inside.
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