Fuel Pump doesn't Pump Fuel!!!!

k3nny · Post by **k3nny** » Fri Mar 02, 2007 4:30 am

After my car drowned by the big flood, the whole interior, sound system and engine bay is screwed.

currently, the car has been repaired for 3 weeks already and yesterday is the first time me and the guys (at the workshop) start the ignition. the pulleys turned, the alternator is fine, the starter dynamo is fine.

but there's no fuel pumped from the tank, .... after checking the cables. the current to the pump is below 10 Volts.

what could possibly go wrong? is it the ECU ?!

niz406 · Post by **niz406** » Fri Mar 02, 2007 5:41 pm

Is the fuel cut switch under the bonnet ok or has it been replaced? Water damage may prevent the pump operating...

I'm sure someone will have some other suggesstions

Keep your chin up I'm sure you will sort it ! ! !

jameslxdt · Post by **jameslxdt** » Sat Mar 03, 2007 3:08 pm

if you have below 10v then you probably have a corroded engine management earth, there are 5 or 6 green and yellow wires near the starter motor, these are the engine management earths, clean this up as they will probably be rusted solid after the car got wet

k3nny · Post by **k3nny** » Sat Mar 03, 2007 4:26 pm

jameslxdt wrote:if you have below 10v then you probably have a corroded engine management earth, there are 5 or 6 green and yellow wires near the starter motor, these are the engine management earths, clean this up as they will probably be rusted solid after the car got wet

there were some cables chewed by rats during the flood (forced to crawl to my engine cause the water level as high as 140 cm). the cables above the plastic intake cover (the one that has PUG logo). it has been repaired but not replaced/rewired.

the first time we plug the battery, there were some electric short circuit sparks. turned out there were some problem with the starter motor, i'm not really sure but it has something to do with the motor were touching the engine body.

and some of the relay under the dashboard was also suspected being the problem.

jameslxdt · Post by **jameslxdt** » Sat Mar 03, 2007 4:31 pm

the double relay in the engine ecu box triggers the fuel pump so this could have shorted out internally, this is quite a common problem on the d8 406 1.8 and 2.0