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BA ecu stuffed? 


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 Post subject: BA ecu stuffed?
Posted: Wed Apr 30, 2014 11:41 am 
Fordmods Newbie

Age: 32

Posts: 17

Joined: 15th Dec 2010

Ride: 94 ef falcon gli wagon

Location: langwarrin
VIC, Australia


My 03 4.0 Fairmont Ghia has been playing up a bit lately. It has had shocking economy the whole time I have had it (well over 16 l/100, despite the fact the trip says 11.5). Lately it has started surging under load a little and has had bad idle, I had a previous thread on this. It had coils, plugs, fuel filter 10,000 ago and has recently had the cam phasors cleaned and fuel pump replaced for a piece of mind (its done 300,000).

On a cold night last week it flat out refused to start. Cranked normally with good battery but refused to start. Started fine the next day when it was warmer. Yesterday in stop start traffic it was pissing rain and cold and the thing stumbled as it were about to die when it was idling a few times but regained its self. Then this morning after it was parked outside all night in the cold it refused to start again. I got the kettle and pored water on the throttle body, crank sensor and o2 sensor to see if it would spring into life but ran out of hot water before the ecu and was running late by that stage.

I have a bluetooth OBD2 tool for my phone and it connects to the ecu while it wont start and doesn't display any codes. It shows the manifold pressure, timing advance ect while its cranking so it cant be completely dead but it still doesnt throw a code.

Im wondering if its likely to be the ecu giving crap economy (im granny-footed), loss of power at times, rough / lumpy idle at times and this cold start issue. Does anyone know the actual issue with the ecu? Is it bad solder joints that I could just reflow? Im not keen on buying a second hand one and having it flashed when it could have the same issue as my current one. im guessing in the cold the aluminium case contracts and puts pressure on the circuit board and over time cracks the solder joints causing a bad joint?

 Post subject: Re: BA ecu stuffed?
Posted: Wed Apr 30, 2014 11:12 pm 
Stock as a Rock
User avatar

Age: 33

Posts: 108

Joined: 27th Apr 2011

Gallery: 6 images

Ride: ea falcon

Location: tanilba bay
NSW, Australia

it sounds temperature related, try replacing air and coolant temp sensors first.



EA falcon(S-Pac) AU engine and injector's, EL BBM conversion,K&N pod,EL ECU,T5 5speed,EL Streering rack, EL Brake system, Extractor's 2 1/2in high flow cat, through 2 1/2in mandrel bent pipe with Lukey Performance muffler

 Post subject: Re: BA ecu stuffed?
Posted: Wed Apr 30, 2014 11:29 pm 
Oompa Loompa

Age: 35

Posts: 38

Joined: 14th Jan 2011

Ride: Series 2 ea

Location: nagambie
VIC, Australia

The ecu is stuffed. Mine did the same thing a couple of years ago. If it won't start when it's cold pour some hot water on the ecu and it will go.
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