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L28 EFI problems? EFI Bible, step 1-A


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#1 Daeron

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Posted 27 June 2008 - 03:21 AM

http://www.atlanticz...jectionbook.pdf

Right click, choose "save as," and read it.

Read the first section all the way through, the start over and read it a second time. If you are feeling spunky about graduating from Datsun EFI School cum laude, then read through each diagnostic check and then go back and read the entire first section a third time.

Then, when you have a problem, go read the relevant portions of the first section, and perform the relevant tests according to the flow charts.


Every... Single.... Problem... that your fuel-injected L28 could possibly have, is covered in there, more accurately than you could even hope for from HybridZ. Granted, wiring problems get difficult to track down.. but if you pay attention while you read, you realize that ALL testing of any components is supposed to be done at the ECU plug, and not at the component. Checking a component at the ECU plug not only checks that the component (AFM, TPS, whatever) is functioning right, but it also tests the wiring at the same time.

Download it. Print it. Staple each page to the ceiling above your bed so the information trickles down into your brain by osmosis and haunts your dreams. (Stay AWAY FROM ME, EGR MONSTER!!!!!:flamedevi) Most of this information is also in the Factory Service Manuals, available for download here.



Please be kind enough to utilize these resources to the fullest before asking questions of the general HybridZ populace; the purpose of this community is primarily performance oriented, and stock running questions get tiresome to answer over and over again. If you DO have the "newbie question" then having researched your problem (read: being able to say "I read the EFI bible but....") will GREATLY increase YOUR odds of getting a helpful answer.


Go now, in Peace, to Wrench and Tune the Z.
Fusible Links blow.

1-5-3-6-2-4, counter-clockwise from 9 o'clock when viewing from driver side fender

There's something about a white Nissan......
Wisdom is knowing how much you do not know.
"Indeed, if fish had fish-lore, and Wise-fish, it is probable that the business of anglers would be little hindered." -JRR Tolkien

ALL YOUR BOOST ARE BELONG TO US

#2 mom'sZ

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Posted 01 July 2008 - 07:47 AM

STICKY STICKY STICKY.....
Daeron... right on guy! Just want to add, replace every damn vacumn hose on the system, there aren't that many and vacumn leaks bugger the system. Check the boot between the AFM and the throttle body. Pull it off, spread the pleats and look in there and make sure it isn't cracked. Next, disconnect every wiring harness connector plug on the system (the wiring harness for the EFI is a separate harness from the whole rest of the car) and shoot some contact cleaner in there. Scrub gently with tooth brush and rinse with more contact cleaner.
Just for the record, I enjoy troubleshooting EFI issues (when I have time)
Help keep Zcars on the racetrack!!!
Save your old rear brake drums. Brembo has stopped making these parts and there are no OEM replacements available.
Parts I want to buy: 75 - 78 280z shells or parts cars (any condition) EFI harness AFMs, ECUs and throttle bodies. Non EGR intakes. 5-speeds. R200. N-42 heads. 75 - 78 Strut housings and control arms. 75 - 78 distributer. 75 - 78 big ugly bumpers f & r
Thank you HybridZ

#3 Daeron

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Posted 03 July 2008 - 10:53 PM

CTS TPS AAV EGR AFM thermotime injector dropping resistor EFI fuel injected throttle body throttle position sensor air flow airflow meter ECU injection manual book procedure test calibrate vacuum diagram troubleshooting flowchart troubleshoot diagnose sick L28 280Z 280ZX help



Searchy Says :grin:
Fusible Links blow.

1-5-3-6-2-4, counter-clockwise from 9 o'clock when viewing from driver side fender

There's something about a white Nissan......
Wisdom is knowing how much you do not know.
"Indeed, if fish had fish-lore, and Wise-fish, it is probable that the business of anglers would be little hindered." -JRR Tolkien

ALL YOUR BOOST ARE BELONG TO US

#4 Oddmanout84

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Posted 08 September 2008 - 08:02 AM

CTS TPS AAV EGR AFM thermotime injector dropping resistor EFI fuel injected throttle body throttle position sensor air flow airflow meter ECU injection manual book procedure test calibrate vacuum diagram troubleshooting flowchart troubleshoot diagnose sick L28 280Z 280ZX help



Searchy Says :grin:


lmao

#5 Zerocell5688

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Posted 22 September 2009 - 04:57 PM

Most of this information is also in the Factory Service Manuals, available for download here.

This link wasn't working for me is there another one that can be posted up or can someone update this? Thanks
~J
1977 Datsun 280Z L28E-T --- "Belua Quiescit" 17.316 @ 79.46 as of 10/24/07
Former:1987 Nissan 300Z Z31 X N/A Auto - Parts in my yard now
Lurk More......Search More.....Know More.....

#6 Daeron

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Posted 22 September 2009 - 11:52 PM

If you need factory service manuals, check out www.xenons30.com/reference.html.

Not sure what happened to that original thread...
Fusible Links blow.

1-5-3-6-2-4, counter-clockwise from 9 o'clock when viewing from driver side fender

There's something about a white Nissan......
Wisdom is knowing how much you do not know.
"Indeed, if fish had fish-lore, and Wise-fish, it is probable that the business of anglers would be little hindered." -JRR Tolkien

ALL YOUR BOOST ARE BELONG TO US

#7 Zerocell5688

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Posted 23 September 2009 - 11:30 AM

If you need factory service manuals, check out www.xenons30.com/reference.html.

Not sure what happened to that original thread...

DUDE DAERON YOU ROCK!! i didn't know they had an s30 version of the Xenon site serves me right for thinkin anyways i just got my FSM for my 87 from they're Xenonz31.com site its good stuff for any of you that haven't downloaded it yet it get on it its good stuff for any and all trouble shooting :mrgreen: i'm feelin less noobish everyday thanks to you guys but a wise man admits he knows nothing and is willing to learn as much as he can :icon28: and everyone on this site has contributed to a lifetimes worth of knowledge on a car its good to know the crazy other terrible things that people have done to cars besides me and done them with sucess more importantly! anyways i gotta download mine on my home comp when i get off work
~J
1977 Datsun 280Z L28E-T --- "Belua Quiescit" 17.316 @ 79.46 as of 10/24/07
Former:1987 Nissan 300Z Z31 X N/A Auto - Parts in my yard now
Lurk More......Search More.....Know More.....

#8 Jester

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Posted 16 December 2009 - 02:27 PM

THIS IS AWESOME!!!!!
I have been using the search to find stuff to diagnose EFI problems with my daughters Z. I do believe this will help us figure it out.

THANK YOU
Jes

#9 _Donovan_

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Posted 03 April 2010 - 08:39 PM

WOW, this is great. I bought a Haynes manual in hopes of it having a troubleshooting guide but it does not. Today I got the engine to crank but not start so I was going to search or post about fuel troubleshooting. I am glad I saw this before posting a thread to get flamed on for not searching. This will help so much.

#10 Daeron

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Posted 03 April 2010 - 10:00 PM

WOW, this is great. I bought a Haynes manual in hopes of it having a troubleshooting guide but it does not. Today I got the engine to crank but not start so I was going to search or post about fuel troubleshooting. I am glad I saw this before posting a thread to get flamed on for not searching. This will help so much.

Thank YOU for using the forums in the proper way! All I did was post a thread that I could hotlink to when I wanted to refer someone to the book.
Fusible Links blow.

1-5-3-6-2-4, counter-clockwise from 9 o'clock when viewing from driver side fender

There's something about a white Nissan......
Wisdom is knowing how much you do not know.
"Indeed, if fish had fish-lore, and Wise-fish, it is probable that the business of anglers would be little hindered." -JRR Tolkien

ALL YOUR BOOST ARE BELONG TO US

#11 ckolander

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Posted 26 May 2010 - 06:56 PM

The osmosis isn't working.......ceiling, no good...under the pillow, no good. Guess I'll just have to read the frikkin thing

If you don't have anything nice to say, insult somebody.

#12 ryan95i4

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Posted 14 May 2012 - 10:01 AM

Is there something similar to this for the L28ET EFI setup, or are both systems very similar?

73 240Z, Haltech powered L28ET
95 Avenger, Holset HX40 @ 26psi
06 CTS-V

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