Fuel pump issue

**Alfa Patch** · 07-10-12, 23:47

Originally Posted by AlfaJack

Can you disable or remove the turbo timer?

Yes but i highly doubt it's that. It is wired into the ignition so would (I think) not allow any of the interior electronics or lights to work. Its possible but my problem does appear to be water related.

**AlfaJack** · 08-10-12, 00:02

Sometimes going back to the OEM setup can be good. However, if it is water/rain related then you could start at the crank sensor. Always good to have a spare on hand if possible anyway.

Nothing else should be getting too wet so sounds like a good possibility

**Alfa Patch** · 08-10-12, 00:07

Too true. Time to search for one are they expensive?

**Alfa Patch** · 08-10-12, 18:05

Where might I get one? Are they the same as deltas?

Thanks in advance

**AlfaJack** · 08-10-12, 19:24

Can't find the part number but it seems they are about £50 now! (I paid about £25-£30 but about 7 years ago!)

This might be the one:
http://www.deltaintegrale.com/detail...&C2=8&id=23315

**Alfa Patch** · 08-10-12, 21:31

Not bank breaking but more than I was expecting. Not really happy to throw £50 at a hunch but looks as though I might have to.

Could anyone with a running car disconnect the sensor for me and see if that stops the fuel pump running? I appreciate it may be a sod to get to but you would be the happy recipient of my long term gratitude

**alfa155chris** · 08-10-12, 21:49

The crank sensor was new when it was mot'd as it wouldn't start after it's retest when pete owned it. I sorted it as he had moved to leicester but car was in west sussex

**Suzumushi** · 08-10-12, 22:08

Originally Posted by Alfa Patch

Not bank breaking but more than I was expecting. Not really happy to throw £50 at a hunch but looks as though I might have to.

Could anyone with a running car disconnect the sensor for me and see if that stops the fuel pump running? I appreciate it may be a sod to get to but you would be the happy recipient of my long term gratitude

go to aftermarket parts shop and buy one of these

<part number> <manufacturer>
17002 ANGLI
1.953.002 EPS
550090 ERA
79016 FAE
60806494 FIAT
7547235 FIAT
7517006 HOFFER
18770 INTERMOTOR
453 002 KW
SEB 145 LUCAS ELECTRICAL
SEB145 LUCAS ELECTRICAL
064820088010 MAGNETI MARELLI
648 200 88 MAGNETI MARELLI
SEN 8I MAGNETI MARELLI
SEN 8IA MAGNETI MARELLI
87006 MEAT & DORIA
0902027 METZGER
XREV151 QUINTON HAZELL

these crank sensors are used in many fiat/alfa/lancia applications
costs about 30 EUR

but first try to check errors on ecu.

regards
W

**Alfa Patch** · 08-10-12, 22:13

Originally Posted by alfa155chris

The crank sensor was new when it was mot'd as it wouldn't start after it's retest when pete owned it. I sorted it as he had moved to leicester but car was in west sussex

Yeah I remember Pete saying the crank sensor had been changed but that doesn't necessarily mean I didn't wreck it by washing the engine bay previously.

You seem pretty knowledgable on these things Chris, got any good ideas?

**Steve Webb** · 08-10-12, 22:16

Originally Posted by Alfa Patch

Not bank breaking but more than I was expecting. Not really happy to throw £50 at a hunch but looks as though I might have to.

Could anyone with a running car disconnect the sensor for me and see if that stops the fuel pump running? I appreciate it may be a sod to get to but you would be the happy recipient of my long term gratitude

I thought you said in an earlier post that even if you supplied the fuel pump with its own 12v supply the car would cut out after 10 mins.

The pump is usually controlled totally by the ECU, so if you manually supply the 12v and the pump still cuts out, I would say there is a problem with the pump or where it is earthing.

**Alfa Patch** · 08-10-12, 22:19

Originally Posted by Suzumushi

these crank sensors are used in many fiat/alfa/lancia applications
costs about 30 EUR

but first try to check errors on ecu.

regards
W

Thanks

I had been considering one of these, to be honest hunting for parts confuses the hell out of me.

I will run diagnostics on the car (the iaw scan one wrinx highlighted) but my laptop is broken so need to wait for a friends. More crucially I need to find the driver software for the obd2 lead.

Thanks again for your help

**Alfa Patch** · 08-10-12, 22:22

Originally Posted by Steve Webb

I thought you said in an earlier post that even if you supplied the fuel pump with its own 12v supply the car would cut out after 10 mins.

The pump is usually controlled totally by the ECU, so if you manually supply the 12v and the pump still cuts out, I would say there is a problem with the pump or where it is earthing.

It was more like 10 seconds before the engine cut out. The pump would continue pumping but the car would not run.

I was thinking maybe the ecu gets confused by the fact that the engine is running even though it has prevented a feed to the pump so it cuts the ignition but that's just a guess.

**corriedw** · 10-10-12, 18:02

Get relays of al the types used and just replace them, the chances are very good you blew water under pressure into them.

**Alfa Patch** · 12-10-12, 01:14

Not the crank sensor. Time to try relays. #>*^?~•!!!!!

**Steve Webb** · 10-12-12, 19:18

Originally Posted by Alfa Patch

Not the crank sensor. Time to try relays. #>*^?~•!!!!!

Did you manage to fix this with the relays, or has the Q4 miraculously self healed?

**Alfa Patch** · 20-02-13, 15:11

Originally Posted by Steve Webb

Did you manage to fix this with the relays, or has the Q4 miraculously self healed?

She self healed, the cause was/is/appears to be water dripping down from behind the dash onto the ECU!

Its coming through the heater fan box which is letting water in due to there being no cover on it beneath where the wipers mount? Do they normally have one, seems odd to have a hole there?

**corriedw** · 09-03-13, 10:45

I would start with the relays in the engin bay. That is where problems come with the other Alfas during washing.

First the fuel pump relay. Just replace it, then you can open the old one up to see if you have blown water into it under pressure.

**Alfa Patch** · 10-03-13, 19:51

Originally Posted by corriedw

I would start with the relays in the engin bay. That is where problems come with the other Alfas during washing.

First the fuel pump relay. Just replace it, then you can open the old one up to see if you have blown water into it under pressure.

I have replaced both. It wasn't them, it appears to have been water leaking through the heater opening and in some cases leaking onto the ecu. I think i was lucky not to break the ecu

I have built a cover for it (mine was missing) and no more leak. I will have to wait till very very hard rain to see if I still have a problem but I think it's now fixed.

**Tamael** · 10-03-13, 22:17

There are water drain holes underneath the plastic cover where the fan motor air intake is. those can be clogged. Clogged drains usually changes the passenger side foot well into a kiddypool on these cars. you just happen to have the ecu there.

Lots of fiat's, lancia's and alfa's from this chassis type have that issue.

Tamael

**Alfa Patch** · 11-03-13, 15:35

Originally Posted by Tamael

There are water drain holes underneath the plastic cover where the fan motor air intake is. those can be clogged. Clogged drains usually changes the passenger side foot well into a kiddypool on these cars. you just happen to have the ecu there.

Lots of fiat's, lancia's and alfa's from this chassis type have that issue.

Tamael

That's helpful advise thanks. I'm sure you're right and will check this next time I have the cover off. For now at least my problem is fixed though.

Patch