ecu problems..

[av_golf]

basically my cars been in the garage all week as the mechanic couldnt figure out what the problem was as the car just would not start. got it started once but it wouldnt rev and then cut out in the end. was put through a diagnostic check today and he said that the maf sensor and the ecu are both playing up and not working as they should and may need to be replaced. is there anything else he needs to look out for? also would an ecu from a mk2 16v work on a mk3 16v? any input greatly appreciated as i need to get to bottom of this.

[gtigolfthree]

Engine should run with or without maf connected, not sure about mk2 ecu.

[karl29]

id try unplugging the immobiliser and plugging it back in mine was similar and rac man did this and been fine since its a plug somewhere behind the dash

[rubjonny]

mk2 ecu wont work, and there is no maf sensor on a 16v.
There is only a map sensor in the ecu, and it wont work with this disconnected, or at least my mates 16v wouldnt when it had a gash in the map pipe.  The vac line runs from the ecu to the inlet or chunky servo pipe non-return valve nipple, so check it hasnt fallen off or split.

if it was the imobilisor the car would run for a couple of seconds then cut out, so if it ran for longer than that but wouldnt rev then the issue is elsewhere. what year is it?

[Wayne]

Sounds like an immobiliser problem to me.

[av_golf]

if it was the imobilisor the car would run for a couple of seconds then cut out,[/quote

the car did cut out just under a minute or so from when i got it to start but then it wouldn't rev. none of the pipes have fallen off or split hes checked them quite thoroughly. its a 1996.
so you all think it could be an immobiliser problem? how would i go about fixing this?

[AudiA8Quattro]

if it was the imobilisor the car would run for a couple of seconds then cut out, so if it ran for longer than that but wouldnt rev then the issue is elsewhere. what year is it?

Surely it is was the immobiliser then it wouldn't start at all.
Get it on VAG com. It could be a dodgey crank or cam sender.

[AudiA8Quattro]

Ah i see its already been through diagnostics.
As Jon says there is no MAF sensor on the ABF engine, maybe they meant the MAP sensor is faulty?

[av_golf]

basically the diagnostic fault that came out was that the fuel injection delivery time is too long. he says the normal time on it should be 16 m/bars p/s when mine is at 42 m/bars p/s
does anyone know a way to sort this out?

[Wayne]

basically the diagnostic fault that came out was that the fuel injection delivery time is too long. he says the normal time on it should be 16 m/bars p/s when mine is at 42 m/bars p/s
does anyone know a way to sort this out?

God knows, ecu or relay problems maybe