View Full Version : No power to fuel pump........
Amirclio
30-12-2006, 20:30
Evening all.....
Hope you can help me out, purchased myself a little project phase 1 for the new year however, the fuel pump does not seem to be getting any power so its not priming when you turn the key and upon testing conection with multi meter, no power!
Can you help guys?
Cheers
Amir
MatBrown
30-12-2006, 20:37
Grey one?
Mat.
Amirclio
30-12-2006, 20:41
yeah man.....
MatBrown
30-12-2006, 20:43
Wondered where that had gone?
http://cgi.ebay.co.uk/1992-RENAULT-CLIO-16V-GREY_W0QQitemZ290064423655QQihZ019QQcategoryZ9861Q QrdZ1QQcmdZViewItem
Looks like someone has made a right mess of the wires inside the car!
Mat.
Amirclio
30-12-2006, 20:47
Yeah only took about an hour to tidy it all up, just need to get it running now! The shell an interior are mint, got all the service histort, seems to have good potential.
Amirclio
30-12-2006, 20:51
Oh yeah! Original flavour! Any ideas coops?
tried the relay? that box n wiring under the bonnwet where its housed looked a bit of a mess so possible its wired up wrong
Amirclio
30-12-2006, 20:56
Yeah not sure which one is for the fuel pump have to get the wiring diagrams out!
Presume you've checked the fuse......
How nice is that! especially for a ton 8)
MatBrown
30-12-2006, 22:21
He wanted £400 for it.
Mat.
Amirclio
31-12-2006, 00:05
Well he didnt get it ;)
Yeah checked the fuse Lunner!
Has it got a key immobiliser in the glove box?
If so, check the wiring to that.
If not, (or the wiring there is ok) check you are getting 12v at the pump, and take it from there.
bradharding
31-12-2006, 16:15
Okay. Spent this morning on it wqith Amir. WE found out the fuel pump relay was buggered, so we replaced it with the foglight relay and now the fuel pump powers up. Loostened off the fuel line to the rail and fuel is deffinately getting there. Sparks on all 4 leads/plugs, and there is voltage at the injectors. So we suspect its either:
A. not injecting
B. engine is immobilised (previous owner ripped out the alarm system. If it was immobilised he could have c**ked up with his wiring)
Any more ideas?
cant see if being immobilised if theres voltage at injectors, fuel, and spark.
Try compression test.
as stan said, most immobilisers cut any power to the fuel pump, so most likely something else at fault!
Hey all, the engine is finally in, all wired up etc but the fuel pump wont prime, been told that this may be because to looms are slightly different! We plugged the looms into the black box near the passenger wing, and 2 wired started to fry on the white plug?
On the valver there are more wires going to the white plug than the 1.4 (there are 2 black ones on the 1.4) It also looks like the wire arrangement is a bit different on the brown plug. The 1.4 is a 94 and the valver is a 91 btw.
My question is, what should we do? Will we need to take the entire loom that goes behind the dash in the valver? Also where does it connect up and how much do I need? Alternatively how do we make it work as it is?
Some pics:
http://img92.imageshack.us/img92/314/img3474et2.jpg
Valver loom, where should it be disconnected to enable it to plug into the 1.4's?
http://img292.imageshack.us/img292/1694/img3475ya6.jpg
http://img271.imageshack.us/img271/852/img3477jr0.jpg
Valver plugs, the white plug only has two wires on the 1.4.. I'll get pics of the 1.4 plugs tomorrow.
Cheers!
ps the engine was running fine in the vlaver.
what fuel pump is it...was the old engine carb?
The wiring differences u are on about is "normal".
If they wont run, its either fuel pump feed from ecu, or main live to ecu.
but if theres volatge to injectors, and fuel pump works, and she's sparking then it isnt that.
Reason im asking about fuel pump, is pressure would be too low if it was a non injection 1.4.
oh s**t, sorry Amir, I didn't mean to piss on your thread, I was reading your thread as I might have a similar problem but replied instead of creating a new thread, can a mod sort that?
Cheers.
Amirclio
01-01-2007, 19:19
Spent dome more time on it today, seems as though there is an issue with the engine loom. The injectors are not firing into the cylinders. We got my valver close enough to connect my engine loom to the tungys car loom and my car fired when we turned the key in the tungy! However when we hooked up my car loom to the tungys engine loom snd turned the key the engine turned over but didnt fire (we hard wired the fuel pump with a 12v battery) again fuel at the rail but not being injected! very odd!
Conclusion:
a break in the loom somewhere or a completely buggered set of injectors?
Would like to get th engine running to see if its any good, if not then the Storm trooper withh have to donate her engine! :?
Any input appreciated!
Cheers
Amir
well you know the injectors are ok cos she fired!
you probably need to run a live from the car to the main ecu live on the engine loom.
If you look at both sides of the brown plug, you might find that there is a thick white wire on the engine side plug, which doesnt connect to anything on the car side of the plug. check that.
bradharding
01-01-2007, 22:45
No. The car didn't fire.
right...so is it sparking? are u getting a voltage at the injectors??
Im sure ive asked this and I keep getting mixed replies :?
Spent dome more time on it today, seems as though there is an issue with the engine loom. The injectors are not firing into the cylinders. We got my valver close enough to connect my engine loom to the tungys car loom and my car fired when we turned the key in the tungy! However when we hooked up my car loom to the tungys engine loom snd turned the key the engine turned over but didnt fire (we hard wired the fuel pump with a 12v battery) again fuel at the rail but not being injected! very odd!
Conclusion:
a break in the loom somewhere or a completely buggered set of injectors?
Would like to get th engine running to see if its any good, if not then the Storm trooper withh have to donate her engine! :?
Any input appreciated!
Cheers
Amir
so did it or didnt it fire?
Amirclio
02-01-2007, 12:45
No Stan, it didnt.
To try and elinate wether it was the engine loom or something to do with the car loom, we got the cars wing to wing to connect My car loom to the tungys, exactly the same thing happened, starter turned but didnt fire! (we hard wired the fuel pump to a 12volt battery).
Then we did the opposite, so wired my valvers engine loom to the tungys car loom so that in theory when we turned the key it would start My valver, which it did.
So therefor there is an issue with either the engine loom or all 4 injectors on the tungy.
Amirclio
02-01-2007, 12:45
Yes plenty of voltage at the injectors.
whip the fuel rali out with the injectors on and see if they are spraying.
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