nostopin
Active member
99.5 jetta TDI 137k mi 5spd. I was having a hell of a time with the "hard start when warm" prob, so the dealer sent it to a non VW mechanic to try a diff(used) injection pump. didnt help so they put the old one back in. while they were doing that I learned about the "resistor switch" method of fixing this. I added a 1/4W 3300Ohm resistor across a momentary push button normally closed switch and added it to the circuit on the #3 terminal (blue wire) It starts GREAT. half a turn and its running. Before it took a good 10 revs to fire. The original post stated he used a 10kOhm resistor, but I found later posts saying 10k will make it think its to cold and start the glowplugs on a long cycle 4700Ohm will start a short cycle, and 3300Ohm will not start a glowplug cycle. so I went with 3300.
The next day I drive 44mi to work, everything is coo. After work on my way home, about 15mi into the commute my CEL comes on. I quickly turn off the radio and roll down all the windows. I hear nothing alarming or out of the ordinary, I know the oil is fine. I pull over and shut it down to take a look. everything looks in order. when I started it back up I used the button and it still works, so it must still be connected. while idling I hear a new rattling noise. MIGHT be new? I dont know. maybe that CEL multiplied my senses x10 drove the rest of the way home. no diff in power, no smoke, didnt see the fuel gauge drop (why i love this car) If anyone else has experienced a CEL after their switch install, what was it? did you find any problems? I'm going to go today and try to get it hooked up to a VCDS to see what the dealio is.
The next day I drive 44mi to work, everything is coo. After work on my way home, about 15mi into the commute my CEL comes on. I quickly turn off the radio and roll down all the windows. I hear nothing alarming or out of the ordinary, I know the oil is fine. I pull over and shut it down to take a look. everything looks in order. when I started it back up I used the button and it still works, so it must still be connected. while idling I hear a new rattling noise. MIGHT be new? I dont know. maybe that CEL multiplied my senses x10 drove the rest of the way home. no diff in power, no smoke, didnt see the fuel gauge drop (why i love this car) If anyone else has experienced a CEL after their switch install, what was it? did you find any problems? I'm going to go today and try to get it hooked up to a VCDS to see what the dealio is.