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farquare

530d down 1 cylinder

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This is my first post over here and not a very happy story so far.

Last week I was driving my car when I noticed a ticking sound, I pulled over and called the aa, the car has not been working since then.

Car 2001 e39 530d se auto, currently on 212k miles.

Engine has been running spot on since I got the car last summer, no knocks or bangs ,giving 45 mpg and uses no oil or water. Swirl flaps were removed by me so can rule out a failure here.

I stripped all the engine cowling off when waiting for the aa, cylinder 1 does not appear to be firing right I.e. disconnecting every other injector makes a difference in running but that one does not. Towed to a local garage fault where injector 1 was identified as faulty on diagnostic.

Injector 1 was pulled and taken to a diesel specialist to have it refurbed however on refitting the problem is still there. garage suspect compression or valve train issues. I went along to see the car yesterday with inpa no fault codes....

On running the car a fault code on injector 1 was thrown.

As a last chance I'm going to swing by and remove the inlet and swap 1and 2 injectors round to see if the problem moves with the injector as I believe the wiring looms can fail. Will maybe try to get a comp test done when the inlet is off. Bizarrely there was a glow plug code showing up yesterday too, I'm sure this would just be a tertiary issue and not connected to the rough running.

Any other things I should be considering here guys? I really like the car but if the issue is valve or comp related I think it might be beyond economic repair for me. Swapping injectors will probably be the last roll of the dice before trying to sell as a non runner or scrapping the car.

Thanks in advance

Richard

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Edited by farquare

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A direct code for injector is always electrical problem and most cases caused by poor connection on the injector plug pins. The solenoid on injector could also cause this but it's very rare and should be ruled out if the injector was tested when refurbished. You can renew just the pins on the plug, part nr. 12 51 2 247 475.

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Thank you for the quick reply, I'm going to try to swap the injectors round this afternoon the should tell me if the problem is isolated to the cylinder or not.

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^ this no 5 on my 330d was playing up according to carsoft. Remembered wheeler dealers and so wiggled the loom bringing 5 back to life.

New loom is about £70 and half hours work to change.

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Did you have an injector fault before replacement?

Do you own or can you borrow a multimeter?

YNP

Content provided by this user should not be considered correct due to the fact he's a raving fruitloop.

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No the car was running fine before last week , swapped injector 1 and 2 round, no different. Could still be loom i guess. I do have a multimeter, what should i check?

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If the problem is like it usually is a poor contact on the pins you can't measure to rule out or determine it. The problem could be at DDE (engine ECU) side (X2415) but that would probably be caused by water damage and ruled out by visual check.

 

If you wan't to measure Injector 1:

Red/white Pin 4 @X2415 (common voltage for injectors 1-3)

Brown Pin 5 @X2415 (connected ground by DDE)

 

You could first try some contact cleaner, compressed air and then contact enhancement paste.

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I personally would check continuity within the injector if it's not open circuit chances are it's a good solenoid and more likely to be the loom/DDE

YNP

Content provided by this user should not be considered correct due to the fact he's a raving fruitloop.

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@clavurion what voltage are these injectors I know they're quite high but can't remember the figure

YNP

Content provided by this user should not be considered correct due to the fact he's a raving fruitloop.

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As it sits at the moment injector 2 and injector 1 are swapped around and all nipped back up, the car is 60 miles away so I won't be able to do anything to a few days. I'll take a multimeter up next week and see what kind of readings I'm getting as per above.

Garage seem to think it might be a lifter fault or a burnt valve I've not compression tested it yet either as I don't have a tester.

Are there any known faults with these engines that would fit the symptoms I'm experiencing?

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Like said a direct fault code for individual injector is always caused by electrical problem. A compression problem would show as high injector correctional value on that cylinder but it only causes a common fault code for smooth running control which doesn't differentiate which cylinder/injector has caused it.

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Yeah tried poking and pulling the wiring no difference.....

I managed to get my copy of inpa working and plugged the car in. There were 2 codes which came up, one for glow plugs and one for injector fault I'm not sure on the 1st one but might the injector one be caused by disconnecting the injector? Cleared and they didn't come back under idle

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I've already had no 1 injector rebuilt, if it's the wiring I'll be gutted but also relieved.

As this is my 1st e39 I'm not sure if any of the other suggestions are likely, do the m57 engines have any trouble with lifters which I assume are hydraulic?

For a bit more background, the car was being driven quite hard about 2 mins before the symptoms started, I'd imagine the car was at wot for about 10 secs before easing off.

Although my head says don't get too optimistic I thought these engines were pretty bombproof, I've never seen any threads of people dropping valves or bursting rings although all the symptoms I'm experiencing at the moment would leave few options left other than mechanical failure.

In terms of what I could see on inpa today, the cycle values per injector were all around the same. There were no generic faults or smooth running errors which is ironic given its running rough as sin...

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Edited by farquare

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Nope running terribly, deffo running on 5, no difference when poking the wiring. What did your engines run like when your fault happened, this one is shaking about and kicking out a bit of smoke. Is that what you'd expect?

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@farquare I've never changed a lifter and only ever taken the head off of one M57 in the 4 years I've been at a specialist (and that was due to head gasket fault) so... I highly doubt it's a camshaft/lifter/valve fault

YNP

Content provided by this user should not be considered correct due to the fact he's a raving fruitloop.

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Yeah they were running like a bag of spanners.

Amazingly it was the loom each time.

Be interesting to see if your new one cures it.

Hope you get it sorted.

The e39 is the best car I ever had (I've had six of them lol).

and you will love it once it you get a bit of time out of it.

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Yeah, I've never seen a thread where valve train has failed on m57 however you never know I guess.

I really hope I can fix this, I don't like being beaten by mechanicals however I appreciate that certain things would require more time and money than I'm prepared to spend.

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Yeah they were running like a bag of spanners.

Amazingly it was the loom each time.

Be interesting to see if your new one cures it.

Hope you get it sorted.

The e39 is the best car I ever had (I've had six of them lol).

and you will love it once it you get a bit of time out of it.

thanks man, this is by far the best car I've ever owned, ticks every box I ever wanted.

If it is curtains however I'm definitely staying with the marque, perhaps an e65.

Out of curiosity in the cases you've seen loom failures does anything in particular precipitate it?

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