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        General >> Problems >> dies after 1 sec
        
(Message started by: pedropedro on Jul 18^th, 2011, 9:41am)

Title: dies after 1 sec
Post by pedropedro on Jul 18^th, 2011, 9:41am

any help appreciated....engine died this morning.......if i crank over fires for about 1/4 sec then dies.....fuel pump relay only getting power for same period ditto injectors fuses relay ok
any ideas ? could it be crank sensor ?

Title: Re: dies after 1 sec
Post by pedropedro on Jul 18^th, 2011, 10:05am

should have said its a 2.3

Title: Re: dies after 1 sec
Post by Matt on Jul 18^th, 2011, 11:38am

Could be, but also sound like a pats issue, is the led on the dash flashing any type of code?

Title: Re: dies after 1 sec
Post by pedropedro on Jul 18^th, 2011, 1:50pm

no flashing from the led..behaving as it should.. but tks for tip

Title: Re: dies after 1 sec
Post by lesterlad aka Rodders on Jul 18^th, 2011, 2:45pm

I had the exact same problem with mine in January.

Check the fuel shut off loom for cracked wiring insulation and/or exposed bare wires touching each other paying particular attention to where the cable goes round the back of and into the cylinder head.

I replaced my loom and it started first turn of the key.

Title: Re: dies after 1 sec
Post by pedropedro on Jul 18^th, 2011, 2:54pm

Hi...new loom fitted a year ago so dont think its that ...but thanks for the tip

john

Title: Re: dies after 1 sec
Post by PJDavis on Jul 18^th, 2011, 4:06pm

Don't discard the Loom! Is the new one 'shrink-wrapped'? The heat around that area is quite substantial, and if the new loom isn't shrink wrapped it could easily be goosed in a year.

Title: Re: dies after 1 sec
Post by pedropedro on Jul 18^th, 2011, 4:11pm

ok will check it out ...tks

Title: Re: dies after 1 sec
Post by pedropedro on Jul 18^th, 2011, 5:25pm

the pump isnt running and the fuel gauge has now gone so next step is drop the tank i suppose...theres 12v getting to the pump

Title: Re: dies after 1 sec
Post by Highlander on Jul 18^th, 2011, 5:43pm

EDIS wiring can also cause this, a bad connection will make the ECU kill the pump.

I had a similar one with a 2.3 where we removed all the tank/pump etc and they were fine, it was the wiring down the front inner wing that was the problem ???

Title: Re: dies after 1 sec
Post by pedropedro on Jul 18^th, 2011, 6:07pm

would that explain the fuel gauge reading empty though ??

the tank has fuel in it...where can i find wiring diagram for the tank end ??

Title: Re: dies after 1 sec
Post by Snoopy on Jul 19^th, 2011, 7:50am

WIRING DIAGRAMS (https://skydrive.live.com/?cid=eb36f845ea9b8fb6&id=EB36F845EA9B8FB6!146)

Title: Re: dies after 1 sec
Post by lleewar on Jul 19^th, 2011, 7:53am

Snoopy, Your last post can't be read. NOT FOUND on the server. Lee

Title: Re: dies after 1 sec
Post by Snoopy on Jul 19^th, 2011, 8:04am

It works for me !

Title: Re: dies after 1 sec
Post by Simmo on Jul 19^th, 2011, 8:08am

And me ;)

Title: Re: dies after 1 sec
Post by pedropedro on Jul 19^th, 2011, 8:17am

thanks for that.. looking at the circuit for the engine electronic control re the fuel, page 22 the left half (relay) of the fuel relay is controlled by the ecu ,,,,,,pats etc etc . if a plus 12v line is taken to the top of fuse 32 that will bypass those relay contacts and the pump will run continuously..hopefully

that left side relay only closes for x1 sec at switch on, then drops out and the ecu pulls it back in once engine fires ...at the moment there is no sound from the pump at switch on

Title: Re: dies after 1 sec
Post by pedropedro on Jul 20^th, 2011, 8:21am

sorted!...pump didnt run when fuse 42 was connected to 12v so knew had to be pump....connector on pump was hanging off...the spring clip was missing; must have never been fitted ...a nightmare... missed appointment, 2 hour wait for reovery truck as didnt want AA to tow re autobox, dropping tank etc etc ...urgh

wish there was an access/ inspection plate under back seat; idea for next scorpio design

Title: Re: dies after 1 sec
Post by Highlander on Jul 20^th, 2011, 9:27am

Excellent ;D

So just a loose connector?

Dont think an inspection plate under the seat would help much though ;)

Title: Re: dies after 1 sec
Post by pedropedro on Jul 20^th, 2011, 10:59am

yes........ loose connector

so worthknowing how that green relay functions ..the right side relaycloses on switch on, but the left one which feeds the pump needs the ecu to close it...so easy way to check whether pump is ok is to give it a permanent 12v to fuse 42 thus bypassing that left relay

Title: Re: dies after 1 sec
Post by gozz on Jul 20^th, 2011, 1:36pm

on 07/20/11 at 08:21:21, pedropedro wrote:

wish there was an access/ inspection plate under back seat; idea for next scorpio design

You can cut a hole in the boot floor if you are careful not to drill the tank,then clean the edges and screw a plate over it.The centre of the tank unit is app 20" from the plastic cover over the boot lock,and app10" from the wheelarch,I refer here to the saloon.
GOZZ.

Title: Re: dies after 1 sec
Post by pedropedro on Jul 20^th, 2011, 1:40pm

maybe that would be easier than dropping the tank