Engine stalls while driving

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Bexnz

New Member
Posts
12
1999 TDI, ?Series I

I'm new to this forum and have scanned for my specific problem, but think it'd be best to describe what's going on with my trusty automatic.

Earlier this week, engine started quietly stalling, for no apparent reason. It currently restarts after 10 mins or so. Battery light comes on when engine cuts out. Battery is less than two years old, and I've ascertained it's not at fault. Auto electrician checked for electrical issues, no fault found there either. Had car fully serviced this week. Again, no fault found.

Now wondering if it could be a fuel pump issue, or could something less costly be playing up? Any advice would be appreciated!

Many thanks
B
 
Bexnz said:
Now wondering if it could be a fuel pump issue, or could something less costly be playing up? Any advice would be appreciated!

Many thanks
B
Click to expand...


Possibly fuel lift pump on it's way out?? About £20 for a new one.
 
The battery light coming on is just because your key is at position 2.

I would run some injector cleaner, change fuel filter and if it's still doing it change fuel pump, start with the cheapest thing first.
 
Very many thanks for all your helpful suggestions. Will try cheapest first, as you suggest, and hopefully won't have to work up to a replacement fuel pump/fuel lift pump. Am assuming they're the same thing, but will do a search to check.

Thanks again.

B
 
1999? Is it a 300tdi or a TD5, I ask because you questioned yourself when you noted it's model.

The 300tdi has a lift pump which lifts the fuel from the tank, pumps it through the filter and then on into the injection pump, so the lift pump/fuel pump are separate.

Does it restart immediately after it stalls? If it’s a 300tdi it could be the alarm immobiliser killing the fuel solenoid. It might be the lift pump but usually they will actually run fairly well without the lift pump.

The injection pump is actually capable of drawing fuel up itself. LR added the lift pump because the distance and height was just on the Bosch specification for maximum lift and distance, this meaning that in off road situations, on a steep hill, it would be possible for the tank to drop lower than the permitted maximum lift of the injection pump. It also let the fuel filter be self-priming as fuel is pumped into it when using a lift pump.

If it’s a TD5, well the list is endless, electrical, injector issues, sensor issues, pump issues…
 
Last edited:
discomania said:
1999? Is it a 300tdi or a TD5, I ask because you questioned yourself when you noted it's model.

Does it restart immediately after it stalls? If it’s a 300tdi it could be the alarm immobiliser killing the fuel solenoid. It might be the lift pump but usually they will actually run fairly well without the lift pump.

First, off, many thanks for your helpful and very informative reply.
In answer to your questions, it's a TDI ... Sorry, as much as I love my tank, which I've had for nearly 10 years, I am only just getting curious about how it goes - or doesn't. This, because my nearest landrover specialist is nearly a full day's outing away.

Back to the issue and your second question: It restarts only after about 10 mins.
I've had the solenoid checked, and all's fine there.
Fuel filter's fine. Will try injector cleaner, as suggested by Finallysnapped, have the alarm immobiliser checked next, then the pumps (thanks, Steviecops, for yours) ...

Bex
Click to expand...
 
Could be something getting hot and failing like an intercooler pipe collapsing for instance, easy check, remove from inlet manifold and see if it starts:)
 
Thanks again.

It's stopped stalling. Not sure if it's just waiting for a really good place to stall, or if something got through the filter and upset things for a while. Time will tell, I'm sure!

B
 
Check the infamous fuel flow and return pipes [under removable panel in boot floor] The flow pipe gets rusty and allows air into the fuel lines. The sedimenter is another vulnerable place where air gets in.Check for diesel round the housing.
 
Bexnz said:
Thanks again.

It's stopped stalling. Not sure if it's just waiting for a really good place to stall, or if something got through the filter and upset things for a while. Time will tell, I'm sure!

B
Click to expand...

Did you do anything or did it just stop?

[edit] just stop stopping*
 
Several days on, have braved it and given the engine quite a work out in various conditions, and all's gone well so far. Long may it continue!

Many thanks, everyone, for all your help.

Bex
 
finallysnapped said:
Did you do anything or did it just stop?

[edit] just stop stopping*
Click to expand...


Sorry, I've just seen your replies. No, didn't do anything. It just started running smoothly. I'm wondering if it was some contaminated fuel. Had a major with water in the fuel tank several years back. Learnt lesson not to refuel following heavy downpours ...

If it does start playing up again, I'll be sure to update you and go through all your helpful suggestions, including rollin danny's, for which my thanks.

B
 
Was too good to be true. Horribly wet day with lots of heavy rain. Engine was running smoothly all morning. Sat at traffic lights for a while when engine cut out. Restarted after about 5 mins, but stalled immediately. Started fully after another 5 mins. Was fine on straight stretch of road, going at about 60, then engine stalled again as i slowed down nearing a junction. Hmm. Will go back through your suggestions - process of elimination. Had solenoid changed with an after market part about five years ago. Wondering if it could be this as well?!

B
 
discomania said:
Does it restart immediately after it stalls? If it’s a 300tdi it could be the alarm immobiliser killing the fuel solenoid.
Click to expand...

After driving smoothly for a while, it resorted to stalling again, and not restarting for a good 10 mins. Quite a bit of trial and error and discussion with various auto & auto electrical bods ensued, and it turned out to be the immobiliser, which was swiftly removed. Problem solved!

LR is humming happily once again, as am I!

Thanks again for your helpful advice.

B
 
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