Technical Dead cinq won't start.

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Technical Dead cinq won't start.

so when you turn ignition on with the pipes off the pump, you can hear it prime but nothing comes out??

If so then almost certainly hte pump, although do take the sender out and check inside the bottom for debris and that the filter bag is on there.. If the pumps clogged its a gonna but you don't want to put another in and it immediately get blocked again. ;)
 
so when you turn ignition on with the pipes off the pump, you can hear it prime but nothing comes out??

If so then almost certainly hte pump, although do take the sender out and check inside the bottom for debris and that the filter bag is on there.. If the pumps clogged its a gonna but you don't want to put another in and it immediately get blocked again. ;)
I don't hear it prime. What I hear is a little click from behind the instrument cluster (the click from the fuses i guess?) but it doesn't do that "zzzz" noise for 2/3 seconds i used to hear.
 
If the relay isn't making a humming noise then it could be a problem with the relay (or the wiring to it). It's worth checking the connections to the relay to make sure they carry a current... and also that the relay connectors are clean and that the relay works okay (easiest thing is to swap the relay for another one that's identical .. just to test it.. or just connect a bulb to the fuel pump connectors and see if it flashes when the engine is turning over).


Ralf S.
 
ahhh, right we are getting somewhere now then. If its not priming with ignition then it is possible its the inertia switch. The ground for the pump goes through the inertia switch. Its in the middle under the dash, hard to explain - pretty rare for them to actually switch though but worth checking. Its behind a little plastic cover and if you put your hand behind that from the top you should feel a button, just push that down to reset the switch - alternatively and prob better to be sure is to use a multimeter at the pump to test for 12v with ignition and that the earth side is actually grounded. If ytou have an earth and 12v to the pump then you can be sure its the pump thats failed. If you don't get power and/or a ground the pump is more than likely ok and its just a wiring issue.
 
If the relay isn't making a humming noise then it could be a problem with the relay (or the wiring to it). It's worth checking the connections to the relay to make sure they carry a current... and also that the relay connectors are clean and that the relay works okay (easiest thing is to swap the relay for another one that's identical .. just to test it.. or just connect a bulb to the fuel pump connectors and see if it flashes when the engine is turning over).


Ralf S.
I took a look at those (ur referring to the relay right near the ECU right?) and they were fine.
 
ahhh, right we are getting somewhere now then. If its not priming with ignition then it is possible its the inertia switch. The ground for the pump goes through the inertia switch. Its in the middle under the dash, hard to explain - pretty rare for them to actually switch though but worth checking. Its behind a little plastic cover and if you put your hand behind that from the top you should feel a button, just push that down to reset the switch - alternatively and prob better to be sure is to use a multimeter at the pump to test for 12v with ignition and that the earth side is actually grounded. If ytou have an earth and 12v to the pump then you can be sure its the pump thats failed. If you don't get power and/or a ground the pump is more than likely ok and its just a wiring issue.
Inertia switch? Any photos? Diagrams? Is it that simple to come on? I didn't knew my had an inertia switch. Wat is it for? And also where's the ground for pump?
 
so the earth for the pump is the inertia switch, its so in a crash or heavy impact etc the inertia switch flicks off so there is no earth to the pump and it stops pumping. It is usually mounted to the bulk head in the centre floor/passengers footwell to the right hand side of the clutch arm/cable cover behind a little plastic cover. I don't have a picture to hand, sure its been covered lots of times so a search of cento section would prob throw up some threads that might have a picture.

Wiring wise, you have the connector to the pump, one has 12v switched live. The other is the earth which if you follow a wiring diagram go to the intertia switch and then just ground after the switch, so if if its switched then there is no earth and the pump just won't run. But you just press the button to reset it, nothing needs replacing.

Another test you can do is just run 12v and an earth directly to the pump contacts - if it doesn't start pumping the pump has defo failed.
 
so the earth for the pump is the inertia switch, its so in a crash or heavy impact etc the inertia switch flicks off so there is no earth to the pump and it stops pumping. It is usually mounted to the bulk head in the centre floor/passengers footwell to the right hand side of the clutch arm/cable cover behind a little plastic cover. I don't have a picture to hand, sure its been covered lots of times so a search of cento section would prob throw up some threads that might have a picture.

Wiring wise, you have the connector to the pump, one has 12v switched live. The other is the earth which if you follow a wiring diagram go to the intertia switch and then just ground after the switch, so if if its switched then there is no earth and the pump just won't run. But you just press the button to reset it, nothing needs replacing.

Another test you can do is just run 12v and an earth directly to the pump contacts - if it doesn't start pumping the pump has defo failed.
So I found what you were saying, but here it goes a question. The button is supposed to to stay down or it's just to press it and he goes back up?
 
been a long time, i think it clicks in and then pops back up... best way to check is to check for an earth at the pump after with a multimeter
I don't have access to a multimeter, but, I'll try to figure it out
 
So, got my hands on a fuel pump today, it's priming now, so I had a dead pump. However, fuel isn't getting to the engine. I had to change bits between pumps, as the one I got was from a normal cinq, not sporting. And the fuel is getting out from the red channel. Idk if it's correct but I'm starting to get annoyed by this.
 
when you say fuel isn't getting to engine, what do you mean? Is there no pressure in the fuel line at the throttle body or is the injector just not squirting fuel?

Do you have spark?
So, no fuel from both return and feed lines although one of them was wet, but again, Idk if I had mounted the fuel pump wrong. So, to test if I didn't mount the fuel lines wrong, I disconnected both, and again, tried to start the car and no fuel. And yes, the fuel pump is priming. I don't if I'm right, but the pump on a 1108 and 900 aren't the same? I haven't check the fuel filter yet, but I doubt is so clogged up that 1,5bar of pressure wouldn't pass? Even just a little? Please give me some ideas.
Edit: And yes, I have spark.
 
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well, you can hear the pump prime but not fuel at the front of the car... If you put just a small bit of pipe on the tank outlet into a bottle of some container and let the pump prime just to check the pump is actually pumping... If it is then i would say it really could just be the filter, maybe its clogged and the extra strain of pushing it through the filter is what killed the original pump, maybe.

See if the pump actually pumps as far back near the pump as you can, and work your way forward from there. After the pump the next thing is the filter though.
 
So, I disconnected the fuel line that goes from the filter to the engine, and petrol came out, so the problem is between the the exit of the filter and the fuel lines in the engine. Omg ..
well, you can hear the pump prime but not fuel at the front of the car... If you put just a small bit of pipe on the tank outlet into a bottle of some container and let the pump prime just to check the pump is actually pumping... If it is then i would say it really could just be the filter, maybe its clogged and the extra strain of pushing it through the filter is what killed the original pump, maybe.

See if the pump actually pumps as far back near the pump as you can, and work your way forward from there. After the pump the next thing is the filter though.
 
well this is a weird one, i guess just follow the lines and look for damage/kinks in it, theres not much to it really won't take long. Its hard to believe it will just be blocked but you could just try blowing down it. take pipe off the filter like you did to see if there is fuel and then take the pipe off the throttle body and try blow down it, should be no resistance there. I'm leaning towards a kink/bent pipe at the moment.

Stuff like this is so annoying but keep at it ;)
 
well this is a weird one, i guess just follow the lines and look for damage/kinks in it, theres not much to it really won't take long. Its hard to believe it will just be blocked but you could just try blowing down it. take pipe off the filter like you did to see if there is fuel and then take the pipe off the throttle body and try blow down it, should be no resistance there. I'm leaning towards a kink/bent pipe at the moment.

Stuff like this is so annoying but keep at it ;)
It's so weird. Is 1 bar so low that it won't get near the throttle body? My car always have weird problems. But here's the weirdest of them all. When I first got the pump out, it would get out and get in and didn't touch the bottom of the fuel tank. This last time that I had put the fuel pump assembly in, the pump was hitting the bottom and I had to apply a great amount of force while my brother was doing the 8mm bolts, is this normal? Could be it?
 
there is a tab that sits under the assembly that often gets bent up a bit when you take it out and that results in the super hard to get back in scenario, thats my guess anyway - i have done it myself and took ages to figure it out lol - was on my own and properly couldnt get it to bolt back in, had it in and out like 4 or 5 times before i figured it out lol.
 
there is a tab that sits under the assembly that often gets bent up a bit when you take it out and that results in the super hard to get back in scenario, thats my guess anyway - i have done it myself and took ages to figure it out lol - was on my own and properly couldnt get it to bolt back in, had it in and out like 4 or 5 times before i figured it out lol.
I've bent that tab down so my pump would go in, but it's so weird, it stays 2 to 5 centimeters up of the fuel tank. Never happened to me. But press it and put the bolts in.
 
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