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Flat spots on an AU 4.0 

 

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Posted: Wed Nov 23, 2005 4:10 pm 
Fordmods Junkie
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The_Jackal wrote:
get a 5 speed... :D

i never looked back


Yeah got one... Then changed it back to auto... :D
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Posted: Wed Nov 23, 2005 10:16 pm 
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uh...................... why???????? ARE YOU CRAZY MAN!!!

 

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Posted: Wed Nov 23, 2005 11:11 pm 
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just gave it a whirl then, took it for a drive just on the long runners, no flatspot, did again just on short, no flatspot, put it all back to normal. no flatspot...........

i dont know if i shouldve done it when the engine was hot or cold? ill give it another go in the morning and see what happens when cold

 

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Posted: Wed Nov 23, 2005 11:25 pm 
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The_Jackal wrote:
uh...................... why???????? ARE YOU CRAZY MAN!!!

Take CRAZY, remove the CR, and add an L.
Bet that covers it :D
Reason I won't be going manual anytime soon :lol:

 

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Posted: Wed Nov 23, 2005 11:32 pm 
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Steady ED wrote:
The_Jackal wrote:
uh...................... why???????? ARE YOU CRAZY MAN!!!

Take CRAZY, remove the CR, and add an L.
Bet that covers it :D
Reason I won't be going manual anytime soon :lol:


Yeah... Partly that...

But city driving and towing is a b**ch with a manual... Ever tried to tow a boat up a normal ramp with a manual Ford... Not fun, poor clutch...

But I do miss the controlled performance of a manual. :(
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Posted: Thu Nov 24, 2005 10:31 am 
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hrmmm i can smell the clutch burning from here!!! hahaha

 

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Posted: Thu Nov 24, 2005 12:50 pm 
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do u think this could be a injector problem?

 

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Posted: Thu Nov 24, 2005 4:25 pm 
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not sure after reading all that

 

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Posted: Fri Nov 25, 2005 9:30 am 
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Hi Guys

Couldnt get to the MAP sensor as in the au they sit under the manifold and to get to the them i need to split the manifold in half (or so ive been told). Too it our friendly fraud dealer who hooked it up to the computer and the only test it failed was the idle.

No faults with any sensors or anything like that. The guy told me that we might need to check the fuel system. First the tank to see if it has any dirt stuff in it. If it does they they wana replace the fuel lines as they cant clean em apparently. Then Clean the injectors. Cost $1400

If the Tanks not got crap in it they would just clean the injectors
Clean injectors $150
Check tank $75

Wat do u guys think, let me know if i can do anything other than be prepaired to spend $1400.

 

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Posted: Fri Nov 25, 2005 9:47 am 
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I find it hard to believe it would be a fuel problem.

If there are any issues with fuel starvation, they would happed at higher RPM. I cant see it running like s**t below 3500 with clogged fuel lines, then magically getting better over 3500 rpm.

And just because the computer says the sensors are good, it doesn't mean its correct. It just means they are within a range the ECU determines is good. I've replaced many a faulty sensor that an ECU reported as good, because when I checked the sensors individually, I found one it was out of spec for those conditions.
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Posted: Fri Nov 25, 2005 10:57 am 
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Help Guys !!!!!!!!!!!

Makes sense arm79 but i really dont know what else to check.

Anyone else have any ideas

 

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Posted: Fri Nov 25, 2005 10:58 am 
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Did you try the BBM not closing theory?
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Posted: Fri Nov 25, 2005 11:17 am 
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yeah did the bbm open and closed. the thing is it didnt do it if it was just constantly open or closed, but then didnt do it afterwards when i put it back to normal.

but did it again this morning, and the bbm is def working, at bout 3600-3800 it opened up the short runners..

this is pissin me off now!!!!!!!!!!!!!!!!!!!!!!!!

 

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Posted: Fri Nov 25, 2005 4:01 pm 
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mines clearing up.. thanks to a lil bit of b10-200

 

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Posted: Sat Nov 26, 2005 11:31 am 
Parts Gopher
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Sorry guys

Like i said before ive been told the bmm is located below the manifold and to get to it i need to split the manifold.

If im wrong can someone direct me on where or how to get to it and what it looks like

 

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