2001 Jetta 1.9 TDI AHF start problem

Post Reply
Clev
Enlisted
Posts: 30
Registered for: 10 years 1 month
Car Make: VW
Car Model: MK IV Jetta 1.9 TDI
Location: port elizabeth

2001 Jetta 1.9 TDI AHF start problem

Post by Clev »

Hi guys. Car cuts out while driving. Seems like everytime I ride over 140km/h it does that. Electronically everything is fine. Just the diesel isn't going into the engine. Pulled out the relay 109, popped the cover, no visible wear. Pulled the fuel sending unit from the tank, cleaned it with high pressure air, guage is going haywire on the cluster. Car cranks but doesn't start. Hoping it's not that ECU. However, the car did drive perfectly, even better after the system was bled through thoroughly. Started and everything, drove for a day, then cut out again. Diagnostic isn't picking up anything. Tried to crank from a bottle diesel with both delivery and return tubes submerged. As I swing the ignition, the pump sucks up midway then waits. Could it be the sending unit that is faulty? I really don't want to get rid of this car. Power on demand, strong and economical, but not with parts. Parts are killing me. Dmf clutch replacement @R11500 vw tavcor. R6230@ Goldwagen. R5000 (incl shipping) eBay. Then there's labour costs
User avatar
panic-mechanic
Panic's Place
Posts: 26715
Registered for: 21 years 7 months
Membership No: 79
Location: Benoni, putfontein.

Re: 2001 Jetta 1.9 TDI AHF start problem

Post by panic-mechanic »

get the pump tested at a diesel specialist (bosch repair centre). sounds like it is not pumping
Stephan van Tonder - Jhb - Putfontein Benoni
'05 Audi A6 3.0L TDI Avant
'09 Touareg 3l TDI
'13 VW CC 2l tdi (repair project)
'05 Touareg v10

Perfect Power dealer. I do dyno tuning.
User avatar
Tdi jetta 4 ever
Lieutenant-Colonel
Posts: 4089
Registered for: 13 years 5 months
Car Make: VW
Car Model: Jetta 4 1.9 Tdi, Isuzu2.5DKBLe
Membership No: missing
Location: Fochville

Re: 2001 Jetta 1.9 TDI AHF start problem

Post by Tdi jetta 4 ever »

Could be a blocked fuel pick-up in the tank.
Robin
Current rides: 02' Jetta 4 1.9 Tdi, 99' Isuzu KB 250 Dle(Faithfull aka slowmo) Mercedes Benz ML 270Cdi
Ex rides: 82' jetta 1.5 Gls(sold), 88' jetta Clx(sold with tears in my eyes)

Rather buy a good quality part that will last then buying a cheap part that won't last.


VCDS user with HEX-USB+CAN cable(Rosstech)

robinwisse@gmail.com
User avatar
panic-mechanic
Panic's Place
Posts: 26715
Registered for: 21 years 7 months
Membership No: 79
Location: Benoni, putfontein.

Re: 2001 Jetta 1.9 TDI AHF start problem

Post by panic-mechanic »

If you read his post you will see he tried a bottle in the front so blocked fuel hose is out.
Stephan van Tonder - Jhb - Putfontein Benoni
'05 Audi A6 3.0L TDI Avant
'09 Touareg 3l TDI
'13 VW CC 2l tdi (repair project)
'05 Touareg v10

Perfect Power dealer. I do dyno tuning.
User avatar
Tdi jetta 4 ever
Lieutenant-Colonel
Posts: 4089
Registered for: 13 years 5 months
Car Make: VW
Car Model: Jetta 4 1.9 Tdi, Isuzu2.5DKBLe
Membership No: missing
Location: Fochville

Re: 2001 Jetta 1.9 TDI AHF start problem

Post by Tdi jetta 4 ever »

panic-mechanic wrote:If you read his post you will see he tried a bottle in the front so blocked fuel hose is out.
If he did it right then yes.
Robin
Current rides: 02' Jetta 4 1.9 Tdi, 99' Isuzu KB 250 Dle(Faithfull aka slowmo) Mercedes Benz ML 270Cdi
Ex rides: 82' jetta 1.5 Gls(sold), 88' jetta Clx(sold with tears in my eyes)

Rather buy a good quality part that will last then buying a cheap part that won't last.


VCDS user with HEX-USB+CAN cable(Rosstech)

robinwisse@gmail.com
Ashveer03
Lieutenant
Posts: 1621
Registered for: 7 years 1 month
Car Make: VW
Car Model: Polo 9n 1.9 TDI Sportline
Location: Durban

Re: 2001 Jetta 1.9 TDI AHF start problem

Post by Ashveer03 »

Not sure if these injector pumps have this, but its common on the older pumps mainly on isuzu bakkies and trucks, theres like a solenoid switch on the injector pump, should be a single wire.
It controls fuel supply. If u have no power at that wire when cranking, there will be no fuel being pumped.

Maybe do some reading on your specific pump regarding that and follow up with some tests.

Sent from my SM-G531H using Tapatalk
When a car tailgates me, i slow down - then floor it and give them a cloud of diesel smoke to choke on :driving:
User avatar
panic-mechanic
Panic's Place
Posts: 26715
Registered for: 21 years 7 months
Membership No: 79
Location: Benoni, putfontein.

Re: 2001 Jetta 1.9 TDI AHF start problem

Post by panic-mechanic »

No it was a fully ecu controlled pump. Not a simple switch. The amount of fuel injected is controlled by the ecu.
So baically there are mainly 3 reasons these pumps stop working
The seals leak and it gets air in.
The shaft that drives the pump internally snaps
The control unit on the pump fails.

All these are very easily tested by professional shops that has the tools for it.
The middle one you can test by undoing the bolt that goes right in the centre of the pump between the outlet pipes. Then take a drill bit that will fit in there and turn the enfine by hand. While you keep pressure on the bit it should go in and out as you rotate the motor. If no in/out movement then the shaft is broken.
Stephan van Tonder - Jhb - Putfontein Benoni
'05 Audi A6 3.0L TDI Avant
'09 Touareg 3l TDI
'13 VW CC 2l tdi (repair project)
'05 Touareg v10

Perfect Power dealer. I do dyno tuning.
Clev
Enlisted
Posts: 30
Registered for: 10 years 1 month
Car Make: VW
Car Model: MK IV Jetta 1.9 TDI
Location: port elizabeth

Re: 2001 Jetta 1.9 TDI AHF start problem

Post by Clev »

Two weeks later, after buying a new crank sensor, still no start. Mechanic says something about a cut off valve not opening. Guess the crank sensor needs to be returned then. New pump perhaps?
User avatar
Tdi jetta 4 ever
Lieutenant-Colonel
Posts: 4089
Registered for: 13 years 5 months
Car Make: VW
Car Model: Jetta 4 1.9 Tdi, Isuzu2.5DKBLe
Membership No: missing
Location: Fochville

Re: 2001 Jetta 1.9 TDI AHF start problem

Post by Tdi jetta 4 ever »

Clev wrote:Two weeks later, after buying a new crank sensor, still no start. Mechanic says something about a cut off valve not opening. Guess the crank sensor needs to be returned then. New pump perhaps?
As Ashveer said yes. Solenoid switch. Get your mechanic to test that.
Robin
Current rides: 02' Jetta 4 1.9 Tdi, 99' Isuzu KB 250 Dle(Faithfull aka slowmo) Mercedes Benz ML 270Cdi
Ex rides: 82' jetta 1.5 Gls(sold), 88' jetta Clx(sold with tears in my eyes)

Rather buy a good quality part that will last then buying a cheap part that won't last.


VCDS user with HEX-USB+CAN cable(Rosstech)

robinwisse@gmail.com
Clev
Enlisted
Posts: 30
Registered for: 10 years 1 month
Car Make: VW
Car Model: MK IV Jetta 1.9 TDI
Location: port elizabeth

Re: 2001 Jetta 1.9 TDI AHF start problem

Post by Clev »

He says it doesn't open. Do I replace the whole pump or just that switch?
User avatar
Tdi jetta 4 ever
Lieutenant-Colonel
Posts: 4089
Registered for: 13 years 5 months
Car Make: VW
Car Model: Jetta 4 1.9 Tdi, Isuzu2.5DKBLe
Membership No: missing
Location: Fochville

Re: 2001 Jetta 1.9 TDI AHF start problem

Post by Tdi jetta 4 ever »

Did he took it out and tested it ? If so then yes only replace that solenoid valve. Hope you come right.
Robin
Current rides: 02' Jetta 4 1.9 Tdi, 99' Isuzu KB 250 Dle(Faithfull aka slowmo) Mercedes Benz ML 270Cdi
Ex rides: 82' jetta 1.5 Gls(sold), 88' jetta Clx(sold with tears in my eyes)

Rather buy a good quality part that will last then buying a cheap part that won't last.


VCDS user with HEX-USB+CAN cable(Rosstech)

robinwisse@gmail.com
Clev
Enlisted
Posts: 30
Registered for: 10 years 1 month
Car Make: VW
Car Model: MK IV Jetta 1.9 TDI
Location: port elizabeth

Re: 2001 Jetta 1.9 TDI AHF start problem

Post by Clev »

Thanks for your response, I'll try it out
Clev
Enlisted
Posts: 30
Registered for: 10 years 1 month
Car Make: VW
Car Model: MK IV Jetta 1.9 TDI
Location: port elizabeth

Re: 2001 Jetta 1.9 TDI AHF start problem

Post by Clev »

Hi yall. Having the same problem I think after buying new engine. Had an overfill with oil. Drove at a high speed, engine died/ cut out with lots of black greyish smoke. Started up again after engine cooled down. Engine was very noisy. Glow plug light was flashing. No check engine light. Replaced glow plugs and car was over fuelling. Did pump timing, consumption better but engine shudders with each start up with white smoke. Cant distinguish between diesel smoke or oil smoke. Changed air filter as well. Checked the diesel filter. Clear. The smoke and engine shudder is rife in the morning startup with heavy white smoke. It disappears when car reaches normal operating temperature along with engine shudder. Idles normal at 800rpm but when using gears 1,2,3 theres a flapping noise coming from the injection pump side. When it idles, theres a noticeable ticking sound like tappets. The smoke, engine shudder and flapping noise from the pump bothers me. I was told to set the injection quantity using vcds together with doing the pump timing. Will it solve problem of the loudness of the engine?

Sent from my HUAWEI CAN-L12 using Tapatalk
User avatar
panic-mechanic
Panic's Place
Posts: 26715
Registered for: 21 years 7 months
Membership No: 79
Location: Benoni, putfontein.

Re: 2001 Jetta 1.9 TDI AHF start problem

Post by panic-mechanic »

Really? you have to post in two different threads?.
Stephan van Tonder - Jhb - Putfontein Benoni
'05 Audi A6 3.0L TDI Avant
'09 Touareg 3l TDI
'13 VW CC 2l tdi (repair project)
'05 Touareg v10

Perfect Power dealer. I do dyno tuning.
Clev
Enlisted
Posts: 30
Registered for: 10 years 1 month
Car Make: VW
Car Model: MK IV Jetta 1.9 TDI
Location: port elizabeth

Re: 2001 Jetta 1.9 TDI AHF start problem

Post by Clev »

panic-mechanic wrote:Really? you have to post in two different threads?.
Trying to find my way around using this new tapatalk app...

Sent from my HUAWEI CAN-L12 using Tapatalk
Larpie
Enlisted
Posts: 1
Registered for: 5 years 8 months

Re: 2001 Jetta 1.9 TDI AHF start problem

Post by Larpie »

I was having the same problem with my 2001 Jetta TDI. What I found was you need to set the dynamic timing (pump timing) using the VCDS, maybe your car is over advanced on the pump timing. I just set mine and it sounds good now :cool:
Themba123
Enlisted
Posts: 1
Registered for: 5 years 5 months

Re: 2001 Jetta 1.9 TDI AHF start problem

Post by Themba123 »

My jetta 4tdi is not opening the injectors so no fuel coming after an engine overhaul what could be the problem, kindly help
User avatar
panic-mechanic
Panic's Place
Posts: 26715
Registered for: 21 years 7 months
Membership No: 79
Location: Benoni, putfontein.

Re: 2001 Jetta 1.9 TDI AHF start problem

Post by panic-mechanic »

So many things.
No rpm being read. Thatbcan be sensor or somebodY forgot to put the crank sender wheel back on.
The timing lift sensor is dead or not plugged in on injector 3
The timing is completely out
The pump shaft was broken
There is no power on the ecu so it does not open the pump
System is not bled.
There might be many more.
Start by scanning thensystem with vcds, then go to reading blocks and see if you get rom during cranking.
Stephan van Tonder - Jhb - Putfontein Benoni
'05 Audi A6 3.0L TDI Avant
'09 Touareg 3l TDI
'13 VW CC 2l tdi (repair project)
'05 Touareg v10

Perfect Power dealer. I do dyno tuning.
Post Reply