2.1TD Engine Over-Running When Key Removed

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2.1TD Engine Over-Running When Key Removed

Postby HimBigChief » Tue May 18, 2010 2:47 pm

This has now happened twice. First time was Sunday night, and then it's just happened again about an hour ago. First time was when I stopped in the local town to nip to the Co-op, turned the ignition off, removed the key and the engine carried on running for a few seconds then turned off. Did my shopping and then when I got back into the car it started up fine and ran fine, but the engine management light was on. Drove it home, turned it off fine and got in the car the next morning, started it and the engine management light was now off.

Same thing happened today, overran, restarted and engine management light was on, turned off, restarted and engine management light has gone off again.

Anyone got any ideas? It's a 98 2.1TD bog standard engine, bar K&N replacement element and stainless exhaust after the CAT.
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2.1TD Engine Over-Running When Key Removed

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Re: 2.1TD Engine Over-Running When Key Removed

Postby teamster1975 » Tue May 18, 2010 3:06 pm

Check the oil level out of curiosity. (Remembered previous post by jasper!)
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Re: 2.1TD Engine Over-Running When Key Removed

Postby HimBigChief » Tue May 18, 2010 3:13 pm

Oil level is fine. At least the gauge on the dials says it is when I turn it on. I also do my own servicing so I know it isn't overfilled, otherwise it would have been doing the same for a couple of months already as I haven't serviced it for a little while.
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Re: 2.1TD Engine Over-Running When Key Removed

Postby Welly » Tue May 18, 2010 4:23 pm

On the HDi there's a fuel pressure relief valve on the fuel rail which opens and releases fuel back to the tank when you kill the engine - only if it's slow to react then the engine can continue running on the pressure left there. The engine light will come on because the engine is rotating without the ECU's control I think.

Other possibilities are an excess of oil in the inlet tract (maybe you could pull an intercooler hose and see if there's a load of oil in there?) this signifies the engine combusting it's own oil although this usually becomes *exciting* quite quickly :shock:
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Re: 2.1TD Engine Over-Running When Key Removed

Postby steve_earwig » Tue May 18, 2010 4:59 pm

I know the 1.9's got a fuel cut off solenoid, presumably the 2.1 has one somewhere, otherwise it wouldn't stop running when you turned the key to off. Maybe this is up the creek :?

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Re: 2.1TD Engine Over-Running When Key Removed

Postby jasper5 » Tue May 18, 2010 5:29 pm

Only just realised, I have a 1.9 to look at tomorrow with a similar fault (no management light on).
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Re: 2.1TD Engine Over-Running When Key Removed

Postby poddack » Tue May 18, 2010 9:36 pm

viewtopic.php?f=1&t=8251&start=0

I got my Pug with this problem, always running on with the engine warning light, when you have done it please let me know if your solenoid plunger rubber end is missing.
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Re: 2.1TD Engine Over-Running When Key Removed

Postby poddack » Tue May 18, 2010 9:38 pm

Or rotting away
406 estate, 2.1TD, I fixed her, then part exchanged her for a Mercedes E300TD Avantgarde Estate.
Hmmmm, straight 6 goodness!
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Re: 2.1TD Engine Over-Running When Key Removed

Postby HimBigChief » Tue May 18, 2010 11:19 pm

Aha, a likely culprit methinks. Where will I find said stop plunger? What sort of price are they new?
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Re: 2.1TD Engine Over-Running When Key Removed

Postby poddack » Wed May 19, 2010 7:27 am

406 estate, 2.1TD, I fixed her, then part exchanged her for a Mercedes E300TD Avantgarde Estate.
Hmmmm, straight 6 goodness!
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Re: 2.1TD Engine Over-Running When Key Removed

Postby pjb0150 » Sat Jun 05, 2010 10:23 pm

if this turns 0ut to be pumpi have a lucas epic with inj lines and injectors
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Re: 2.1TD Engine Over-Running When Key Removed

Postby tenwierdufos » Fri Jun 11, 2010 2:22 pm

Sounds like the stop solenoid sticking to meeee.

Only other thing that could cause it is oil getting in somewhere (i.e. turbo oil seals) but that would be alot more violent when it runs on haha, so i wouldnt worry about it.

If you know someone with a decent fault code reader it should confirm it for you.


Also...

Might be worth checking the wiring that goes into the top of the fuel pump, it runs quite a long route around the engine. I had one where the wire rubbed through in various places, grounding out and locking the throttle wide open, somewhere in there will be wiring for the stop solenoid too. Dont know if the wire rubbing through could also cause the same thing?

Worth a look anyway as it only takes a minute to check :)
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Re: 2.1TD Engine Over-Running When Key Removed

Postby Nuffield » Fri Jun 11, 2010 10:42 pm

Hi Everyone.
This is quite a common problem on 200 tdi Land Rover engines, it is caused by the use of "city diesel" which wears the inj pump, swarf builds up around the stop solonied and prevents it from closing. The only cure is a new injection pump, and the use of a fuel addative to prevent the wear.
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Re: 2.1TD Engine Over-Running When Key Removed

Postby tenwierdufos » Fri Jun 11, 2010 10:45 pm

Nuffield wrote:Hi Everyone.
This is quite a common problem on 200 tdi Land Rover engines, it is caused by the use of "city diesel" which wears the inj pump, swarf builds up around the stop solonied and prevents it from closing. The only cure is a new injection pump, and the use of a fuel addative to prevent the wear.
Regards,
Nuffield


What do you mean by city diesel?

I thought there was only normal diesel and vpower lol

(i say this out of curiosity, and being the owner of a series 3 with a 200tdi in it lol)
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Re: 2.1TD Engine Over-Running When Key Removed

Postby Nuffield » Sat Jun 12, 2010 9:53 pm

Hi,
"City Diesel" was the sales name for low sulpher fuel, this caused no end of problems with injection pumps, and still does on older engines. Rebated (red) diesel has just changed to this, and there are many coments re stopping pump wear on farming message boards. I run an old M A N 8 136 truck to carry my vintage kit around and add a small amount of engine oil to each tank of fuel, so far I have had no trouble.
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