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Discussion Starter · #1 ·
I recently had a problem with my TL Magna jerking when cold and displaying the check engine light and going off. Putting a jumping cable on the diagnostic link has given me code 41 which is injector related.

The idle isn't the smoothest, while it's not rough I can hear a 'limp' in the idle.

Rather then replacing sensors and injectors 'for the hell of it' what could trigger code 41?
 

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Super Moderator
2004 TL Magna(aka Diamante) AWD, 6g75 engine, F5A51 automatic trans.
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163 Posts
Welcome.

I have no direct experience of injector problems on my TL Magna(but see below).

Other than the obvious things, here are some general pointers:



Later, I will try to search the database for "Injector" related threads.
 

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Super Moderator
2004 TL Magna(aka Diamante) AWD, 6g75 engine, F5A51 automatic trans.
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163 Posts
For a link to the "Technical Archive" go to:


which leads to :


In that 3rd gen. archive there are 101 pages, unfortunately only up to May 2016.

Going through each page and looking at the individual titles of each thread would take forever.

Instead, there is a less tiresome method.

Once an individual page # is selected, hit "ctrl f" together.

A search box will appear at the top of the page.

Type in your search term which, in this case, might be "fuel injectors" or maybe "code 41".

If there is no result for that page the search box will appear in pink.

If there is a result(s) the search box will be blue.

You will need to search through all pages individually, each time using the "ctrl f" method.
 

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Super Moderator
2004 TL Magna(aka Diamante) AWD, 6g75 engine, F5A51 automatic trans.
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163 Posts
Here is a thread that says that 12 hole "380" injectors could be used instead of the 4 hole standard injectors:

file:///C:/Users/User/Desktop/Magna/Aussie%20Magna/www.aussiemagna.com/forums/showthreadeffb.html

I had the 380 conversion done 3.5 years ago.

I am assuming that it has the 380 injectors in it, hooked up to the original wiring harness connectors.

If I really needed to find out, I believe that all I have to do is look to see what colour they are.

I might have a look one day.
 

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Super Moderator
2004 TL Magna(aka Diamante) AWD, 6g75 engine, F5A51 automatic trans.
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163 Posts
Late last year, I put a bottle of this in the tank:


I seem to remember that there was a quite small decrease in fuel consumption.

The idle quality is as perfect as I could wish for, now that the "low voltage" rough running caused earlier this year by a failed alternator and/or battery was cured.

It was a bit erratic for a time.

It is, once again, "syrupy" smooth, hot and cold.

"The moral of the story" is:

Low Voltage could cause a rough idle condition.
 

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Super Moderator
2004 TL Magna(aka Diamante) AWD, 6g75 engine, F5A51 automatic trans.
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163 Posts
P.S. I only ever use "91", and never "94/ethanol blend".

When the price was reasonable, I used the rare tankful of Premium.

Not now.
 

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Discussion Starter · #8 · (Edited)
An update...

At warm idle the battery voltage is 13.96-14.08

In regards to injectors, I'm still playing with ideas..
-I'm currently running injector cleaner
-Does anyone know the resistance of these injectors? I may have a dud injector
-380 injectors interest me, how do I open this thread?

Here is a thread that says that 12 hole "380" injectors could be used instead of the 4 hole standard injectors:

file:///C:/Users/User/Desktop/Magna/Aussie%20Magna/www.aussiemagna.com/forums/showthreadeffb.html
 

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Super Moderator
2004 TL Magna(aka Diamante) AWD, 6g75 engine, F5A51 automatic trans.
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163 Posts
Place your mouse over the "f" in file>>
Left Click>>
Drag the mouse all the way along the line to the end whilst holding the left mouse down>>
Hover the cursor over the Blue Line>>
Right Click mouse to Copy>>
Open New Browser & place cursor in it>>
Right Click & hit Enter>>

Someone else(anyone else) who is more computer literate than me will be able to do this/explain better than me.

I know that there is an easy way to do it, but to me it is all "gobbldygook".

Sorry, but I am useless with this "stuff", no matter how hard I try.

Don't quote me on this but the Voltage I would expect to be a bit higher like about 14.7v.

That is what my mechanic said mine was right after installing my brand new alternator.

Check out some battery voltage/alternator testing youtube videos.
 
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