No motive power

[dan_b]

400mile round trip to Chester. 30 miles from home when this happened.

Car completely lost all motive power. Won't go, won't re-start.
Electrics seem fine, sparks on spark plugs, engine turns over on starter motor. No overheating apparent, fuel just about to nudge the red last 1/4 on the fuel guage, range left 85 miles. (was driving very conservatively!)

Checked voltage running all the way to the fuel pump.
No prior sounds of whining from the fuel pump.

Any clues? Could it be the fuel pump? Blocked fuel line? The ECU gone bonkers?

Whilst I was being towed back, my garage rang their parts supplier who said that a new S2fuel pump (assuming that's what has failed) was on a 2-week delay from Germany? Can this be true?

[Dr H]

Not the Cam Position Sensor is it?

Sounds very similar this http://www.s2forum.com/forum/showthr...=&threadid=372

Leigh

[Martynf]

Nicely spotted Leigh the part in question on that thread is part number 034 905 161 @ £101+vat from the dealers and 70.31+ from us. Audi do indeed refer to it as the hall sender. One of the guys on here ghad it changed recently, the cam pulley did not have to come off to change it, so that makes it quite easy to change.

You would of thought that if the plugs are sparking, then the engine would at least try to fire up though????? unless the problem WAS no fuel to fire with?? I do love logic... if the engine will spark but won't fire AT ALL! even badly, then surely it must be fuel related as there is nothing to ignite? no??? I'm no expert...

If it turns out to be the pump, then the pump was modified!! you may also need the modified fuel pipe for it and the two new nuts. If it is 2 weeks back order, then ask your local Audi dealer to do a locator search to see who may have one in stock for you.

Good luck
Martyn

[s2avant]

Be careful with a dealer search though because as I mentioned before (about the july price update) the dealers who had in stock before the update will want to charge your local dealer the old price, which they may try to pass on to you.

Not sure if the price changed but most did so make sure they tell you how much before hand. I know how it works as I've ripped other dealers off like this before and I'm sure Martyn has too Can't you get them if they're on back order Martyn? and I'm sure your price is cheaper.

I'll check UK stocks tomorrow when I'm at work.

Ben

[audiman]

If there is a spark then its not the hall sender, take it engine is 3b.

If it is sparking then, then coil, ign. amplifier, dizzy, and both crankshaft sensors are working. Sounds like a fuel supply problem. Possible fuel pump relay, or even a fuse! Does the rev counter flicker when you crank it??

[audiman]

Just read the bit about mpg!! Must have been driving like a girl

I've just been to Lincoln from Somerset and I used 1.75ish tanks of fuel, its about 230 miles door to door. With the RS2 injectors my autocheck lies so i dont know what the mpg was, but the screen said 30.8!!! Don't think so.

Nice twisty lanes before the A303, if your in the area watch out for a green s2

[Martynf]

Cheers for the tech aspect Tom (BTW where you been?? missed you!! - hows the box?). It's all pointing to fuel...

Bens advice is spot on yes, I could get it faster, a week tops. I can only match the price (and then delivery) not beat it. The price is really low! See who you come upwith Ben, as Dan will no doubt need it yesterday etc. Worth checking the fuse for sure and relay!!

Any news yet Dan?
Martyn

[audiman]

Ive been visiting a m8 at uni for a week! Been indulging in some various student habits, such as drinking, eating badly, living in a **** pit, oh and not washing!!! Girls love it

BTW @ dan b, who checked for a spark and how was it done.

[dan_b]

i was indeed "driving like a girl" - partly because I had my boss in the car with me for the whole journey and didn't want to scare the bejezzus out of her, but also because I was on the ol 40p a mile routine, so wanted to squeeze as much "margin" out of the expenses as I could (it was all going to my brakes upgrade fund). Of course, that's all gone to the recovery driver ops:

Apologies for the lop-sided photo, seems I can't work the software on my phone ops:

I had an RAC rescue guy come and pluck me off the A1M intersection roundabout (****ing scary place to be stranded). He did all the voltage checks, did a spark check on a plug out of the engine, checked the earths etc. seemed to know what he was doing.

There was current going through the fuel pump relay when I cranked it, and all the fuses look intact. The recovery guy traced power all the way to the fuel tank, but couldn't go any further...

I was quoted about 70 quid for the new fuel pump (upgraded version, so would need new fuel line as well I was properly informed), but got the 2-week lead stime story (back order from Deutschland?).

Could it be something as banal as a blocked fuel filter, a blocked fuel line? I don't often run the car with low fuel levels due to it's drinking habits, so maybe there was some tank-sludge drawn up? I did worry that perhaps it was the ECU gone loopy, and then I also feared the cambelt had slipped a few teeth or something and it had gone in to shut-down. God I hope not...

The garage is doing a proper inspection tomorrow (I'm not mechanically skilled enough or have the facilities to do it all myself) - when I finally got back to Richmond they didn't have time. I'm talking myself round to the idea of it being the fuel pump, but don't like the idea of a 2-week separation from my red beauty, so if they do report it's the fuel pump, I'll be back here very promptly!

Cheers guys.

[dan_b]

The wierd thing about the fuel pump is that I have heard absoloutely NO unusual whinining noises or strange sounds from it at all, and the car has been performing very nicely - good throttle response, lots of power etc. Nothing really prior to suggest a fuel supply problem looming.

Probably should add the car is a 1991 S2, with an MTM stage 1 ECU re-chip thingie (done by Kim Collins at quattro sports) with a de-catted Scorpion exhausty tube job.

[audiman]

Just cos the fuel pump is taking current doesn't mean its pumping, could be partially seized, so dont rule that one out. (RAC staff aren't allow to pull off a fuel pipe to see if fuel is pumping, some Health and Safety rubbish!!)If a garage has got it then make sure they check delivery pressure AND flow rate. But they should know that. Also check Injection duration to see if the injectors are being opened by the ECU.

Nightmare, driving with the boss and 40 pence a mile!!! Can you make profit out of that

Anyway leave it to the garage im sure that they can sort it. Keep me/us posted on updates etc. Be interesting to see what it was.

hope some of this info is of use to you

[Graham]

Audiman said:

I've just been to Lincoln from Somerset and I used 1.75ish tanks of fuel, its about 230 miles door to door

WOW! thats 70 quid for 230 miles:eek2: Earlier in the year i went to Alton towers with the missus and a few mates , and used 38.50 to do 370 miles averaging about 80-100mph most of the way , the boot was full of food and drink, and it was boiling hot. Is my car super efficient or what , different story if i hit a traffic jam though i bet
Graham

[audiman]

Sorry, that was for 460 miles! That was including some use of A/C plus being loaded to the roof. And canning it when something fast looking overtook me. Cant be having that. Kept up with an RS4 on the motorway. I was just gaining on him but it was fairly close.

[dan_b]

I would have expected to have been up about £110 from petrol expenses (which is why I was driving like a proverbial girl!), but of course, all that went straight to the recovery truck driver (forgot that my RAC membership isn't tow-you-home. Whoops).

I was averaging (according to the computer) 27.4mpg for the round trip, which is for me a record in the S2. Normally it reckons I'm averaging 21.9.

Nervously waiting the call from the garage

[S2central.net]

1st thing I'd check is all the fuses for the ECU. One of those feeds the injectors - lookup S2 Central tech section - I can't remember which fuse on the 3B.

If it is the fuse, you'll need to find out why it blew before going much further.


Paul