AU series 2 problems

xrtonv · 20-07-2009, 08:03 PM

hey guys ive been helping a mate try to fix his AU ute
back ground info
its a 2002 model 4l. with a 4speed auto
its a xls falcon ( long reach)
no it has a few problems
first!
it seems to be killing clusters,
the old cluster started frreezing up and sticking,( rpm ) and then starterd working backwards as in would rev out then when u got of the gas would stay at 6 or even 7 thousand
then as of today it started drove normaly and then all of the sudden bam the speedo went from 50km/h to 200km/h the rpm tacho stoped at 500rpm, the tempreture foze on hot and it was outa pertrol according to the guage.
so today we went to the wreakers (3rd time now) and changed it with a fully working unit
and it has started playing up agaian
so im guessing its electrical?
but where to start??

2nd!
The car seems to be missing on take off and generally down on power all accross the rev range
when accelerating from idel it stats to shake a lil and hesitate before it revs out
when in drive and accelerating from 50km/hr it feels asif the car dsont want to move
this has been happening for 3weeks or so now
we have changerd the following about a 2 months or so ago : spark plugs, leads, filter, o2 sensor, ran through a bottel of injector cleaner
and when ths was done the car was running insane but about 3 weeks ago it started these symptoms.
and now we are a lil stumpted

could the 2 problems be connected in anyway?
could the computer be fried? or something
what else is there to check
dimi
xrtonv

GK · 20-07-2009, 08:47 PM

Fuel filter blocked. Was it the fuel filter you changed? I'm assuming you meant the air filter. Fuel pump playing up.

Go the filter first, easier and far cheaper to do.

GK

xrtonv · 20-07-2009, 08:55 PM

which one the intank one or the under carriage one
dimi

NC1183 · 20-07-2009, 08:59 PM

The fuel pump is in the tank, the filter is along side the passengers chassis rail, on the inside.

There is a sock on the end of the fuel pump.

private9 · 20-07-2009, 09:14 PM

I recall once or twice a few years ago on Christmas day, my cluster doing the same thing. Have never seen it again since!

Definitely sounds electrical. If you have access to another AU, I'd try swapping the BEM and ECU, although I suspect one of those needs the key recoded.

As for the running issue, I'd definitely be going fuel filter followed by the pump.

Good luck!

xrtonv · 20-07-2009, 11:03 PM

kool thanks guys will change the fuel filter tomorow
if all goes well and see if the problem persists
dimi

xrtonv · 21-07-2009, 11:56 PM

ok well today i changed,
fuel filter( no change)
cleaned and regaped spark pugs,( no change)
then decided im gona check the coil pack and behold #4 was covered in a green substance dont ask me what but was covered lol
tried to clean off the but it wasnt going anywhere so went and brought a brand new unit from ford at the price of $310 and fitted it and
boom perect infact better then before
so thanks guys for all ur suggestions
dimi

Mr Hardware · 22-07-2009, 10:11 AM

yeah the AU cluster issue is a terrible one.
It's rare and it is electrically related.
Check what sort of voltage the alt is spewing out. I'm pretty sure my alt played havoc with my last one. Change your transducer for a good measure too.

GK · 22-07-2009, 12:03 PM

Quote:

Originally Posted by xrtonv

ok well today i changed,
fuel filter( no change)
cleaned and regaped spark pugs,( no change)
then decided im gona check the coil pack and behold #4 was covered in a green substance dont ask me what but was covered lol
tried to clean off the but it wasnt going anywhere so went and brought a brand new unit from ford at the price of $310 and fitted it and
boom perect infact better then before
so thanks guys for all ur suggestions
dimi

I wonder if the new coil pack will sort the cluster also.

Glad you've got it sorted, the engine bit at least.

Cheers,

GK

xrtonv · 01-08-2009, 12:29 PM

it seems that coil pack has sorted out the cluster
car is all fixrd
and nothing seems to be wrong
dimixr