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TDI 101 Got a simple/basic TDI question? Are you a newbie (new to the forums). Feel free to post your question here.

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Old May 25th, 2008, 08:47   #61
bagger
 
Join Date: Aug 2005
Location: AZ, USA
Fuel Economy: 44.8,34,31
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Got ot started today. YAHOO!!! Thanks to your post. It was air in the lines. Followed your proceedure to a tee for bleeding fuel lines and she fired 2nd time I tried. Can't thank you enough. Sometimes all we need is a little push in the right direction and a good nights sleep to have a fresh perspective. Thanks again Dave
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Old May 26th, 2008, 12:54   #62
casetane
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Relay 109 problem

I think this is what my 2000 Jetta is suffering from right now. Because she fits all the symptoms right down to the glow plug light not coming on.


I thought for some reason she had air in her because she would crank and crank but not start. I cracked a head to bleed the air out and she started right up after the first crack. It didn't even seem any air came out. Does this some how override the fuse problem or am I looking at an entirely different problem all together?
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Old June 18th, 2008, 04:42   #63
childishidealism
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I just want to thank whitedog, kermatdi, Gretta_the_Jetta, and everyone else here at TDIclub for how great this forum is. I have been very busy over the last 18 months and haven't been around to keep up with things until Sunday night when I was forced to. My 2005 Jetta TDI-PD died after driving a few seconds of driving. After lots of cranking it would start again only to die. I had changed the fuel filter two months before due to what I thought was clogging so I figured I needed to again. This didn't help, so I hit the forums.

After a search I found this thread which led me to test the lift pump. It tested bad, so I searched and found a howto from Gretta_the_Jetta. Easy enough, now I just needed to buy one. I searched the forum and found kermatdi's site. I ordered with next day shipping and got the thing switched out in about 30 minutes with no diesel spills in the back seat. Now I'm back up and running and I'm sure saved at least $400 over taking the car to the dealer (which I'd never do anyway, to be clear.)

Again, a big thanks to everyone for making this place happen and keeping it running. How far we've come where now everyone with the internet having this resource as opposed to only having your own experience, that of your buddies around the water cooler, and whatever you could gleam from a Service Manual.
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Old August 7th, 2008, 13:37   #64
edv
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I have an 05 TDI and does not start. It cranks (turns over) but does not start. I can hear the electric pump and some wierd wining sound cominng from the intake area (trotle body). Is there a fuse or a relay, does it have to do w/the imobilizer? The car has been parked for about 1.5 years.
Thanks
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Old August 7th, 2008, 15:11   #65
whitedog
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Remove the hose where it goes into the intake and look at the flapper valve in there. It should be open. This valve acts as an anti-shudder valve to shut off the air into the engine when the car is turned off.

To remove the hose, find the wire clippy thing and lift the bottom end of that clip. It will pivot on the top end of the clip and will snap into place open enough to remove the hose. (While the hose is out, take a look at the retainer nubs and if they are worn, look at my signature and get a retainer clamp.)

Was the fuel filter changed and is full of fuel?
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Old August 18th, 2008, 07:57   #66
ninobigfish
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Fuel Economy: 49mp
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I turn the key I get lights, the engine turns and firers but the car will not turn on. After ten minutes the car will turn on it will smoke a lot white smoke. Then it will run fine. If I turn off and turn on back wile the car is hot it will turn on fine. If I let it cool it will take a wile to turn on again.
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Old August 18th, 2008, 12:11   #67
whitedog
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Sounds like you need to start looking for an air leak in your fuel ytstem.

I wish we had a comprehensive air leak troubleshooting guide here.
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Old August 23rd, 2008, 13:21   #68
ninobigfish
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Default Glow plug system fusible

Quote:
Originally Posted by whitedog

The basics.

The fuel being injected is controlled by the computer, but the computer needs electricity to run.

Troubleshooting.

This is easy. Turn the key to "ON" and watch the glow plug light. It looks something like this:



If the some lights come on but the Glow plug light does not come on you have a relay 109 problem. If NO lights come on, you have a power problem so start at the battery and start checking.

The earlier cars had a bad problem with the main power relay which is numbered 109 in the relay panel. The original relay was black, and the updated one is gray.

This relay supplies power to lots of stuff including the main computer. If this relay fails, it is just like the key was turned off. The thing is that the problem is a bad solder joint that opens and closes with heat. Often if you let the car sit for a bit, it will cool back down and that crack will close and you can run again until it heats up enough to open that crack. Some people have had luck opening the relay and resoldering the cracked joints, others have been able to test it by jumpering the two large terminals in the relay holder using a piece of wire. Use caution with any temporary repairs or don't drive very far from a fire station.

Check to see if yours is black. If it is, this is a very high failure rate item so it is safe to assume that's the problem and either fix the black relay if you are capable or just drop the $10 and buy a new one. If it isnít the problem now, it will be in the future, so this is worth replacing.

Here are a couple of old posts about it:
http://forums.tdiclub.com/showthread.php?t=199038

http://forums.tdiclub.com/showthread.php?t=35854

http://forums.tdiclub.com/showpost.php?p=300195&postcount=1

Itís also possible that the engine will die and not restart, or it may just not start. Just remember to look for that tell-tale glow plug light on the dash.

If the glow plug light comes on, see #4 below.
Also check the fusible link for the glow plugs. Is not located under the dash inside the cabin of the car is located in a box to the left of the coolant tank.
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Old August 23rd, 2008, 16:24   #69
chariotdriver
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TDI(s): 2003 Jetta
Cool Help Please - Just died going home

First, thanks for all the great information, I have been using this thread for two days troubleshooting my Jetta. It's a 2003 TDI and it dies on the way home, was going about 40mph and suddenly the engine lost power, shuttered and died. There were no indications of missing or poor performance leading up to this event. When I first tried to restart, it sounded like there was a couple of cylinders firing, then nothing sounded like a cylinder firing. Had it towed home and so far I have checked the fuel line to the injector pump, fuel was in the line. It's a black hose so I could not see the air bubble. Checked the fuel shut-off valve, it's working, checked the ASV, it's working, the glow plug light does come on for a few seconds when the key is in the ON position, loosened the nut on #1 injector, cranked the engine and no fuel was ejected, but some fuel was in the line when the nut was loosened. The engine has 97,000 miles, was going to replace the timing belt at 100k, but I have been told they last for 150k. Scanned for codes but none show up, the ECU seems to be working okay with a scan tool.
Anyone have other ideas or been in this situation?
Thanks
Dan H.
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Old August 23rd, 2008, 16:37   #70
DanG144
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Going past 100k on the timing belt is playing Russian Roullette with your engine. For 1 cent a mile or less, it is not worth the gamble to prolong it.
The fact that no fuel came out of the injector seems key. It should squirt out under high pressure.

So I would concentrate on the fuel side.

Replace the fuel filter, vacuum drag the fuel lines full, bleed your injectors.

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Old August 23rd, 2008, 18:49   #71
chariotdriver
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Thanks Dan. I'll change the filter tomorrow and see if that helps, but there was fuel in the line between the filter and the injector pump, I would have thought the pump would have sucked all the fuel out, but I'm new to Diesels so and accepting all advice.

Dan H
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Old August 23rd, 2008, 19:14   #72
DanG144
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It is quite possible to have enough air in the line to cause problems, and still have fuel.

If you do not get fuel out of your injector lines when you crank the engine, something is wrong with the fuel delivery system.

Do you know about the need to use a vacuum pump and refill the filter and fuel lines? Then crack the injector lines until you get solid fuel out?

You should be able to pull fuel out of the tank through your fuel filter with only about 4 inches of mercury vacuum.

If you have a leaky fuel line, it can let air into the fuel system and prevent the pump from being able to suck fuel from the tank. It'll suck in air instead.
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Old August 24th, 2008, 19:38   #73
chariotdriver
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I bought a small handheld vacuum pump at Autozone today. Checked the draw through the fuel filter, fuel flows at 1-2 in/Hg easily. So I don’t think there is a leak from the filter on back. I filled to fuel line going to the injector pump with Diesel and cranked the engine but still nothing. Has anyone ever heard of the fuel shutoff valve not working even though it makes a solid ‘click’ when powered on?
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Old August 24th, 2008, 20:12   #74
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Did you try putting the vacuum on the return side of the Injection pump?
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Old August 25th, 2008, 03:23   #75
chariotdriver
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No, only on the fuel filter outlet. I did notice then when I was trying to fill the hose from the fliter to the injector pump that the fluid level kept going down ever time I filled it up, I was holding the hose up vertical and adding Diesel through a smaller hose. I finally realized that the fluid must be going out the exit hose on the pump since there was no fuel leaking that I could detect. Is this normal? Do you think I still need to test with a pump on the fuel exit hose of the injector pump? Should the fuel flow through the pump easily?

Thanks

Dan H
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