Fordmods Logo

wrong ecu fitted 

 

Page 2 of 2 [ 22 posts ] Go to page Previous  1, 2

 
 Post subject: Re: wrong ecu fitted
Posted: Wed Apr 18, 2012 1:45 pm 
Getting Side Ways
Offline

Posts: 2464

Joined: 5th Nov 2004

Gallery: 7 images

Location: Brisbane
QLD, Australia

So what did ford change for them? - Injectors, MAF?

Nigel
Top
 Profile  
 
 
 Post subject: Re: wrong ecu fitted
Posted: Wed Apr 18, 2012 2:05 pm 
EFI Guru
Offline

Age: 59

Posts: 4359

Joined: 5th Nov 2004

Gallery: 28 images

Ride: 351 Vogue,XH 5.0,'17 5.0 Stang

Location: Perth
WA, Australia

{USERNAME} wrote:
So what did ford change for them? - Injectors, MAF?

Nigel


Nope they still ran 19's/55mm so nothing to change.
Top
 Profile  
 
 
 Post subject: Re: wrong ecu fitted
Posted: Wed Apr 18, 2012 2:07 pm 
Getting Side Ways
Offline

Posts: 2464

Joined: 5th Nov 2004

Gallery: 7 images

Location: Brisbane
QLD, Australia

Cool. Mine runs great on LPG, but s**t on Petrol.

Looks like (According to AFR's) its going hard-lean as soon as theres throttle. Fuel Pressure dropping, or Fuel pump not pumping. Or the MAF - but the MAF was fine. no backfires or codes either
Top
 Profile  
 
 
 Post subject: Re: wrong ecu fitted
Posted: Wed Apr 18, 2012 2:26 pm 
EFI Guru
Offline

Age: 59

Posts: 4359

Joined: 5th Nov 2004

Gallery: 28 images

Ride: 351 Vogue,XH 5.0,'17 5.0 Stang

Location: Perth
WA, Australia

Yeah it's not often you'll get a code for MAF because it usually needs to be severe for the EEC to "know" its faulty. If it's putting out a reduced(offset) voltage the EEC has no real way of knowing this unless it picks up a short to ground or similar.
Pump is a likely bet.
I take it you cut injector power when on LPG?
Top
 Profile  
 
 
 Post subject: Re: wrong ecu fitted
Posted: Wed Apr 18, 2012 2:45 pm 
Getting Side Ways
Offline

Posts: 2464

Joined: 5th Nov 2004

Gallery: 7 images

Location: Brisbane
QLD, Australia

I do at the moment - Im hoping to move to vapour injection though so its not a permy change. Cut injector power, run additional power to the ISC so that still works.

Actually the 5.0's are a nice easy install. I also took the liberty of cutting the o2 sensors on LPG so the ECU doesnt miss-learn. Normal installs seem to cut one, but that leaves one tracking waaay off course. I saw some funny results in the XR8 after a few weeks, so now they both cut. I also read that the EEC stops learning when the O2's are disabled... which is what I need for petrol to work correctly.

The Fuel Pump was working a treat when the i6 was in there - and I can hear it start up now. But the whole problem of going massively lean (18's +) on even mild throttle input has me bugged. It will learn around it, but cant keep up with large throttle deviations - and starts pinging its head off. So for now Im LPG only. Im actually going to go get a fuel pressure gauge I think to sort it out.
Top
 Profile  
 
 
 Post subject: Re: wrong ecu fitted
Posted: Wed Apr 18, 2012 3:30 pm 
EFI Guru
Offline

Age: 59

Posts: 4359

Joined: 5th Nov 2004

Gallery: 28 images

Ride: 351 Vogue,XH 5.0,'17 5.0 Stang

Location: Perth
WA, Australia

Still sounds like pump. I've never had much success with fuel pressure to catch pump problems with the engine running. Pressure bleed down over time seems to catch marginal pumps better I find and flow rate(while stressed) better still.
I'd go for a drive and get it hot then pull the return off and check the flow.
Top
 Profile  
 
 
 Post subject: Re: wrong ecu fitted
Posted: Wed Apr 18, 2012 4:14 pm 
Getting Side Ways
Offline

Posts: 2464

Joined: 5th Nov 2004

Gallery: 7 images

Location: Brisbane
QLD, Australia

LOL. Thats just it - I dont trust it hot. It pings as soon as I touch the throttle.

I'll grab the EF Pump and throw it in on the weekend

NIgel
Top
 Profile  
 
Display posts from previous:
Sort by  
 Page 2 of 2  [ 22 posts ]  Go to page Previous  1, 2

Who is online

Users browsing this forum: No registered users and 32 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

 

 

It is currently Tue Dec 24, 2024 12:31 am All times are UTC + 11 hours

 

 

(c)2014 Total Web Solutions Australia - Australian Web Hosting and Domain Names