Engine turns but no go?

9th April 2011, 18:46

I've checked a fair few threads about saxo's not starting.

My engine cranks/turns over and over but doesn't fire up. First thing I noticed is that the fuel pump isn't priming when turning the key over 2 turns and making that kind of humming/buzzing sound.

Checked fuses, no air in fuel rail and Earths all seem secure and tight.

Only 2 days ago it would start but stop 2-3seconds after it started for the first time. Idle being rough. Start it up again straight after and it would idle fine @ 1000rpm.

Can anyone give some suggestions for what to check next and how to check fuel relay?

Thanks

9th April 2011, 18:49

first thing i would do is put a new fuel filter on as its cheap and can cause this

if thats not the case then i would run checks on fuel pump, injectors, coil etc on diagnositics to find the issue

9th April 2011, 18:55

Quote:

Originally Posted by gaz4399

first thing i would do is put a new fuel filter on as its cheap and can cause this

if thats not the case then i would run checks on fuel pump, injectors, coil etc on diagnositics to find the issue

Ok, I'll fetch a new Fuel filter tomorrow!

As I can't drive the car (No MOT or TAX) is it worth getting some Redex to clean out the fuel system?

Thanks for quick reply!

9th April 2011, 21:08

Quote:

Originally Posted by Shaleskin

Ok, I'll fetch a new Fuel filter tomorrow!

As I can't drive the car (No MOT or TAX) is it worth getting some Redex to clean out the fuel system?

Thanks for quick reply!

yes, redex is a good shout mate

10th April 2011, 02:08

Mate if its what i think i just had the same problem
When it doesnt wanna fire take a spark plug out of the head put it back in the lead and place on top of engine and turn ovEr if it doesnt spark try it again when engine does start and there shoukd be a spark if its like this try changing ur temperature sensors thats what i done and its working now
Actualy i changed that and the crankshaft sensOr so not sure which one bt both are cheap to buy hope this helps

Chris

10th April 2011, 14:09

give the started solnoid a tap with a hammer

10th April 2011, 23:08

Thanks all for suggestions. I'll give your method ago Chris tomorrow or Tuesday. Didn't make it to halfrauds today so will go when I can. Woul having a blocked fuel filter prevent pump from priming?

Also, where abouts on C pillar is the earth point for fuel pump?

11th April 2011, 15:23

Update!: Installed a new fuel filter but still no go.

Can I have some suggestions to why the fuel ISN'T priming when key is turned 2 clicks? (Buzzing sound you normally hear)

I have a strong feeling it has to do with that. All fuses are intact and good, haven't/can't check fuel pump relay as I can't find it and anymore suggestions would be great!

Thanks

11th April 2011, 15:39

try pressing the big red button under the bonnet mate

11th April 2011, 16:30

^^^ that mate would be a good start if not then could be crank sensor

11th April 2011, 16:32

yeah try the pushing the red button first under the bonnet next to the battery. if not like the guy NFS says try changing the crank sensor

11th April 2011, 17:34

I've pressed that button several times and nothing has changed

I'll look into the crank sensor, most I've seen are from £10 - £30 on ebay and Europarts. This sound like a reasonable price?

I've located it (fairly easy!) and is it just held on by a bolt or 2?

11th April 2011, 17:38

EDIT: nvm just read the fuel pump isn't even priming, Also the fuel pump relay is under the ECU

11th April 2011, 18:18

Quote:

Originally Posted by iSlayeR

EDIT: nvm just read the fuel pump isn't even priming, Also the fuel pump relay is under the ECU

Ah OK. I'll check pins for any damage etc and change crank sensor tomorrow.
-------------------------------------------------------------
*Does the crank sensor need to be working to get fuel primed? Not turn engine over but JUST to prime fuel.

Are there any other sensors to be concerned about when fuel priming is an issue?

11th April 2011, 18:47

If your fuel pump isn't priming when yoghurt your ignition on the check your fuel pump relay, if that's okay then cheek your fuel pump, I think there under the rear seats in saxo's..

11th April 2011, 18:48

Haha sorry for the poor spelling, I'm on an I phone

11th April 2011, 18:55

Quote:

Originally Posted by simonwillis1988

If your fuel pump isn't priming when yoghurt your ignition on the check your fuel pump relay, if that's okay then cheek your fuel pump, I think there under the rear seats in saxo's..

What does the fuel pump look like?

Is it accessible to take out/replace after removing rear seats?

Haha! Dw, I knew you were typing from a phone as it happens to me XD

11th April 2011, 19:04

Itll be under your rear seat and it'll be a round cap that you'll undo and take off and underneath it will look like this http://www.google.co.uk/m/search?sit...uel%20pump#i=0 just be careful because it's in your fuel tank, don't make any sparks! Hope this helps buddy,

11th April 2011, 22:52

Quote:

Originally Posted by simonwillis1988

Itll be under your rear seat and it'll be a round cap that you'll undo and take off and underneath it will look like this http://www.google.co.uk/m/search?sit...uel%20pump#i=0 just be careful because it's in your fuel tank, don't make any sparks! Hope this helps buddy,

Just taken both circle covers off and found exactly what was in photo.

Question: Can I use a fuel pump from a VTS to use in a VTR?

12th April 2011, 13:01

^ ^ Bump ^ ^

12th April 2011, 13:11

wow @some replies.

You need two people, locate the fuel pump relay, it's under the ecu, little box, brown i thimnk on vtr's.

One person holds the box, the other sits in the car and turns the ignition on, don't try to start. You should here a clicking noise from the relay. If it doesn't check fuses, if fuses ok, then try a new relay.

12th April 2011, 18:32

I don't think a vts pump will fit a vtr but I'm not sure about that one, I'd just get a vtr one mate or see if anyone on here has asked that before?

14th April 2011, 16:36

Update!:

I can hear relay clicking when turned over to 2 on ignition, flicking it between 1 and 2 i can definitely hear it clicking.

So can I assume now that it's definitely the pump itself?
Don't have a multi-meter to check for power but due to it playing up before it got to this stage I can only assume it's the pump now failed as the relay is working.

Reason I asked if VTS pump would fit/supply same amount of fuel is because I can get one for £5 off someone locally.

So rather than starting a new thread, does anyone know if a VTS pump would fit in a VTR?

14th April 2011, 16:41

yes there all the same pump.

14th April 2011, 16:48

Quote:

Originally Posted by kristel10589

yes there all the same pump.

Excellent. I'll go buy this pump and hope it fixes it!

20th April 2011, 13:53

6-day later update!:

Just changed the fuel pump about 10mins ago. Turned ignition and still no go.

There was a click from relay AND then fuse from the other side of engine bay and for about a second sounded like a "dieing" buzzing sound from engine bay where normal priming sound would usually be.

All pipes for fuel rail are pretty solid so I'm guessing it's again pressurised.

What else could I check for?

20th April 2011, 14:11

Have you tried swapping the fuel pump relay?

And have you done any work on the car yourself? aftermarket immobilshers, engine conversion? etc. As my old saxo had an aftermarket immbolisher which cut off fuel prime, next step will be to get a multi meter on the fuel pump sensor/wires.

20th April 2011, 14:24

Quote:

Originally Posted by iSlayeR

Have you tried swapping the fuel pump relay?

And have you done any work on the car yourself? aftermarket immobilshers, engine conversion? etc. As my old saxo had an aftermarket immbolisher which cut off fuel prime, next step will be to get a multi meter on the fuel pump sensor/wires.

I haven't tried swapping fuel pump relay because as it was clicking I thought it was all Ok. I have done work to the car but not anything to effect the fuel system. Did turbo it a fair few months back, but fuels been fine until recently.

Ok, I'll look up for a spare relay. Fit that. Apart from the multi-meter to check, what else should I look for?

What about earthing to the fuel pump? Where's that located?

20th April 2011, 14:38

Don't really no what else to check apart from the relay/fuses, and testing everything on the multi-meter, iirc there's 6 earths all together inside the car, 2 behind the dash, 2 either side of the dash, and 2 at the rear of the car, if it was an earth problem you'd have more problems than just the fuel pump ( everything else works correct?)

hope you find the problem, should be an easy fix to say you had it running fine for months

20th April 2011, 14:43

Quote:

Originally Posted by iSlayeR

Don't really no what else to check apart from the relay/fuses, and testing everything on the multi-meter, iirc there's 6 earths all together inside the car, 2 behind the dash, 2 either side of the dash, and 2 at the rear of the car, if it was an earth problem you'd have more problems than just the fuel pump ( everything else works correct?)

hope you find the problem, should be an easy fix to say you had it running fine for months

Yep, Headunit + accessories, lights etc ALL work A-OK. Just doesn't buzz/prime when ignition is turned.

Bought a multimeter, So will test fuel pump connection as you suggested when it eventually arrived. Also got a relay on it's way.

If you know off the top of your head; Which/how many fuses are related to the fuel system?

Thanks for your help

20th April 2011, 14:52

http://www.saxperience.com/forum/sho...t=fuse+diagram

fuel pump fuse is in the fuse box in the engine bay, right hand side, f9, 10a, if that helps

20th April 2011, 15:05

Quote:

Originally Posted by iSlayeR

http://www.saxperience.com/forum/sho...t=fuse+diagram

fuel pump fuse is in the fuse box in the engine bay, right hand side, f9, 10a, if that helps

Thanks again!

22nd April 2011, 11:45

Ok, multi-meter arrived and have been playing with it.

The connection to the fuel pump has 4 wires, I've found only one supply of power. I don't know if this only has one power to prime pump AND run fuel gauge sensor?

But I can only get one reading while ignition is on stage 2 and that's @ 5.58V

Any help greatly appreciated

22nd April 2011, 19:51

Evening bump:

Am I supposed to get more than 5V and can someone say what each of the wires does? (4 in total)

24th April 2011, 00:26

Ever thought your engine might be seized?
Or snapped cambelt?
Mine didn't start at all, fuel pump didn't even prime ..
Had cambelt done and it worked fine.

24th April 2011, 10:54

hi shaleskin my names andy i had this problem and i found out it was the crank sensor wireing that goes to crank sensor was dammaged under chefing fixed problem and worked fine give me a ring easyer to tell you over the phone what happened 07 543 655 037

4th February 2014, 16:26

Help! I'm having similar issues, the fuel pump primes but fuel doesn't seem to be entering the engine. If it's priming though then surely it's working? Could it be the relay only doing half a job?

Thanks in advance!

4th February 2014, 19:01

I'm guessing by that you've worked out what the problem is mate?

17th February 2014, 01:37

Yes I did indeed! Crank shaft sensor, replaced that and fired up immediately