1998 jetta tdi

MichiganTDIguy · Jul 28, 2014

New to the tdi world and having a rough start. LoL
Having some problems with my tdi.
Started of the factory security alarm was going off. I eventually found the problem. Two broken wires in the drivers door.
After fixing that I haven't been able to get it to fire. Glow plug light would come on for a second or two and that is it but no fire.
Had someone who said they knew a lot about tdi's come over and now I don't know what they did but now the glow plug light doesn't come on at all.
I think they moved the relays around. I looked in my Hanes manual and my relay panel isn't the same as the say.
Is there anyone here who could tell me what relay is in the relay panel 1-12.
Any help would be awesome and thank you in advanced!
Chris

MichiganTDIguy · Jul 28, 2014

Also could my ecu be bad and how could I check it?

Abacus · Jul 28, 2014

I highly doubt your ECU is bad.

Here is my fuse panel.

MichiganTDIguy · Jul 28, 2014

Abacus said:
I highly doubt your ECU is bad.

Here is my fuse panel.

Thank you for the picture!
The only reason I asked about the ecu is because I read somewhere that if the 109 relay goes it can cause the ecu to go out.

IndigoBlueWagon · Jul 28, 2014

Where are you in Michigan? There are a couple of great gurus there, one in Fowlerville (Marty Bergel), one in Cedar Springs (Kirk Blackmore). Sometimes sorting out issues in a car that's new to you can be difficult if you don't know what to look for. Their contact info is in the trusted mechanics list in TDI 101.

Abacus · Jul 28, 2014

The 109 relay feeds power to the ECU, but it doesn't cause it to go bad.

If you suspect your 109 relay, put a jumper wire between your battery and the black/white wire on top of your injection pump. If you hear it click, try starting the car. If it starts but dies when you remove the wire, then your 109 relay is bad. It's only a $10 part, I keep spares in every B4.

MichiganTDIguy · Jul 28, 2014

IndigoBlueWagon said:
Where are you in Michigan? There are a couple of great gurus there, one in Fowlerville (Marty Bergel), one in Cedar Springs (Kirk Blackmore). Sometimes sorting out issues in a car that's new to you can be difficult if you don't know what to look for. Their contact info is in the trusted mechanics list in TDI 101.

Thanks for the info, if I don't come up with something soon I will look into them.
I am in Whitehall.

MichiganTDIguy · Jul 28, 2014

Abacus said:
The 109 relay feeds power to the ECU, but it doesn't cause it to go bad.

If you suspect your 109 relay, put a jumper wire between your battery and the black/white wire on top of your injection pump. If you hear it click, try starting the car. If it starts but dies when you remove the wire, then your 109 relay is bad. It's only a $10 part, I keep spares in every B4.

Well I think the guy that I had look at my car before switched my relays around. So I need to start there I think and I am also going to run a jumper wire to my fuel pump to see if it kicks on.
Thanks

Abacus · Jul 28, 2014

I would put the relays in the right places first.

MichiganTDIguy · Jul 29, 2014

Abacus said:
I would put the relays in the right places first.

That's what I will be doing then checking the fuel pump.
Thanks

MichiganTDIguy · Jul 29, 2014

Ok so I got the relays put in the proper locations. The glow plug light is now coming on but still not firing. How do I jump the fuel pump? I know you someone said run a wire from the batterie to the black and white wire on the pump but the batterie is in the trunk.
I might have a long enough wire but is there a different way to do it?
Or is there a relay for the pump that might have went bad?

Abacus · Jul 29, 2014

Well that might be the problem, put the battery where it belongs under the hood.

Run a jumper from the battery to the wire mentioned, even if it's a jumper cable, it won't take much.

MichiganTDIguy · Jul 30, 2014

Abacus said:
Well that might be the problem, put the battery where it belongs under the hood.
Run a jumper from the battery to the wire mentioned, even if it's a jumper cable, it won't take much.

Hmmm, good idea lol

Thanks, didn't know if I could do it that way or not.
Thanks for the help

Abacus · Jul 30, 2014

Let us know how you make out.

MichiganTDIguy · Jul 30, 2014

Will do

MichiganTDIguy · Jul 30, 2014

Will do!
You wouldn't know off hand wich relay is for the fuel pump?

Abacus · Jul 30, 2014

The 109, or the 601 in the picture above (which is 109 upside down) is the fuel pump relay.

MichiganTDIguy · Jul 30, 2014

Ok
So that is brand new. If I jump my pump and no fuel is there a way to check just the solenoid?

edjet · Jul 30, 2014

Do you have access to a VagCom? It would be best to see what faults you might have.

MichiganTDIguy · Jul 30, 2014

edjet said:
Do you have access to a VagCom? It would be best to see what faults you might have.

I'm not sure.
Where would one go?
I thought I read somewhere your car needs to be running to use vagcom? Not 100% though.

JDSwan87 · Jul 30, 2014

Where in Michigan are you located?

MichiganTDIguy · Jul 30, 2014

JDSwan87 said:
Where in Michigan are you located?

Whitehall
Midwest of the state

Stealth TDI · Jul 30, 2014

Abacus - I'm not near my Bentley Manual. What is the purpose of the red jumper wire beside relay 53?

Abacus · Jul 30, 2014

It keeps the low beams on when the high beams are on. It was a modification for the B4's, which have separate high & low beams. I have added it to all the B4's locally, along with the high beam bulb & socket in the low beam location.

Stealth TDI · Jul 30, 2014

Okay. Thanks. I don't imagine that is a good idea for single-bulb applications such as the Mk3.

Abacus · Jul 30, 2014

Not unless you want to deal with a melted socket and housing.

IndigoBlueWagon · Jul 30, 2014

You're only 50 miles from Kirk Blackmore. Might be worth the tow.

belome · Jul 30, 2014

I have AAA Plus so that anytime I'm between work and home I'm less than 100 miles from Kirk's house. Luckily I've never had to use the roadside, but Kirk has done both of my TB jobs for me. Stand up guy for sure.

MichiganTDIguy · Jul 31, 2014

Ok so hopefully I can get this thread back now lol
Is there a way to check the silinoid for the fuel pump?

Abacus · Jul 31, 2014

The solenoid or the relay? The solenoid is just how I mentioned earlier, by applying power. The relay is usually a visual indicator, if the glow plug light doesn't come on for a second when turning the key then it's probably bad. If it does come on for a second then it's probably good.

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