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I am a bit confused now as to whether the 205 relay is the fuel pump relay.
The relay that was coroded is in the fuse box under the bonnet on the driver side .
It had the date scratched on it that corispond
with the date the car was first registered in 1994
so the original .
If it's not the fuel pump relay what is it.
it also means if it's not the fuel pump relay
I am not sure if I go xed the at or not
I guess the only way is to drive it till it breaks down or not
​​​​​​.
Lou, can you post the actual part number of that relay (205) and then we can try and identify it for you. Isn't there a label in the fuse box cover that tell you what the relays are!
Like Dave has said the fuel pump relay should be under the drivers knee bin in the last position.
If this is an aby engine, had a similar problem with my s2 a couple of years ago. Intermittent starting for a while, then dead. Pulled the codes, which said cam position sensor. Bought the Bosch part no equivalent, which fixed it. 60 ukp via bosch, a lot more from Audi. Since then have located a source for the optosensor and is a direct replacement, though you need to lightly rivet the new item, then epoxy, as the rivets are brass ad not very robust. Colour coded wires match the original as well...
So position 6 in the under bonnet fuse box does look like its for the electric sliding roof! It's a bit confusing as despite apparently being dropped they were clearly used in much later production vehicles. The last p/n revision is the one shown on the parts diagram (scroll down to the 15's as that how all the relays are listed).
So unfortunately I don't think this has anything to do with your issues. On the plus side perhaps your roof is grateful of a better supply of juice. Easy to see whether this is correct but pulling it out and seing if the roof works!
Just yanked the cover of my similiar vintage (and more importantly perhaps) UK market A6 C4. The p/n on the label is 4A0 010 137B.
It states that position 6 is for Schiebedach/ sliding roof.
Anyway the OP should have enough info to determine its function. All he has to do is look at the underside of the cover or yank the relay.
Back to square one . it is not the fuel pump relay at al ,and I clearly haven't solved the problem .
the car starts from cold every time then appears to run out of fuel after a few miles and refuses to start for 1o ten minutes it then starts straight away and runs for a few miles and repeats the cycle hall sensor was replaced
and it is the same.. but it is just like its run out of petrol .no misfire or anything.
Back to square one . it is not the fuel pump relay at al ,and I clearly haven't solved the problem .
the car starts from cold every time then appears to run out of fuel after a few miles and refuses to start for 10 ten minutes it then starts straight away and runs for a few miles and repeats the cycle hall sensor was replaced and it is the same.. but it is just like its run out of petrol .no misfire or anything.
431951253D is a 205 relay but I am not convinced about where it was located or its true function. Can you post a photo of it in position?
BTW, your issue might be a tired/lame/feeble fuel pump that is overheating due to some conditions, e.g. low fuel levels in the tank:
I wonder if your car is early enough to have had those thermal fuses: http://forums.quattroworld.com/s4s6/msgs/126555.phtml
Can't remember the username of the guy (Sean) but he had basically changed everything only to discover it was the thermal fuse cutting power.
Obviously if you don't have them then its not any issue but could explain how the car resets itself. Guess you would need to check power to the injectors after it cuts out.
Are there any codes?
Robin my car must be quite an early s6 as it's a 1094 m
I have no real idea how to find out if I have the thermal
fuses I will study your links to see if I can find out.
Dave the fuel pump was replaced a while back
, but with an aftermarket one .
I changed the fuel filter the other day , and there was
am exstreme amount of pressure there, but as you say it could still be suspect .
When the car first let me down it was very low on fuel
Infact I thought that was it until I put Ten gallons in and it made no difference. Which is why I decided to change the filter
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