-
Grand Future Air Dried Fresh Beef Dog Food
Air Dried Dog Food | Fresh Beef

Carnivore Diet for Dogs

Go Back   Automotive Forums Car Chat > Nissan > 240Z | 260Z| 280Z | 300ZX (Past Z Cars)
Register FAQ Community
240Z | 260Z| 280Z | 300ZX (Past Z Cars) The original Z cars - ones that started it all.
Reply Show Printable Version Show Printable Version | Subscription Subscribe to this Thread
 
Thread Tools
  #1  
Old 12-24-2005, 10:43 AM
stephenp stephenp is offline
AF Enthusiast
 
Join Date: Mar 2005
Posts: 683
Thanks: 0
Thanked 0 Times in 0 Posts
Send a message via AIM to stephenp
afm ecu wiring diagram

i think i found my problem ...
i think somewhere between my afm (air flow meter) and my ecu is a short
reason being i dfound one wire going to the ecu that is the same flimsy white wire in the core of the afm sensor wire.....
i tested it and have minute amounts of voltage while from the afm i have the 2.5 to 2.8 at idle and jumps after depressing throttle
but at the ecu very low approx .2 to .34 volts received
excpect this to be the problem


ok what wirte should i use the wire that is used is sheiolded and flimsy l;ooking what should i replace with



any help would be apprciated
Reply With Quote
  #2  
Old 12-24-2005, 04:34 PM
stephenp stephenp is offline
AF Enthusiast
Thread starter
 
Join Date: Mar 2005
Posts: 683
Thanks: 0
Thanked 0 Times in 0 Posts
Send a message via AIM to stephenp
Re: afm ecu wiring diagram

ok found the wire in the ecu its pin number 31

good continuity
no na ecu is not compatible and wont run.....


lets see

good fuel pressure.
assumeing good spark(with ether revs up no hesitation)
fuel cuts out almost instantly when the throttle is depressed slightly passed the 1\4 throttle point
fuel pressure doesnt drop a wink
( i know theres no fuel due to wide band o2 meter shows fuel go from rich section to not on gauge almost instantly and cars dies )
car wont allow almost any throttle until you click the idle switch to make car think throttle was completely closed
tried to adjust the timing to no avail

if anyone has any advice please please please help

this is probably the first time ive ever not been able to diagnos and fix a problem on any of my cars

usally i know what it is wqhen it happens

also ive tried to rmove the clip from the knock to eliminate that as a POSSIBILITY

fuel pressure does raise when throttle is touched (or disconect vacum)
there seems to be no vaccum leaks

ecu diagnosis as being afm ...... tests ok to ecu????
(through the return wire of the afm........)
ecu problem??>?????

or am i the one with a monster in mty z (only instead of a gurgler its a gremlin)
Reply With Quote
  #3  
Old 12-25-2005, 01:11 PM
stephenp stephenp is offline
AF Enthusiast
Thread starter
 
Join Date: Mar 2005
Posts: 683
Thanks: 0
Thanked 0 Times in 0 Posts
Send a message via AIM to stephenp
Re: afm ecu wiring diagram

cleaned o2 sensor (thought that since the meter didnt move a wink other than when it drops to not on gauge... cleaned it no difference
also i tried to disconnect the afm to no avail either(as in major difference between hooled up and not almost stalls almost instantly _)
also reading at afm and at ecu are identicle(as in not shorted out
also car will start without ether now......
cleaned alot of sensors ........
i guess that ill have to remove the ecu and attempt to see if i can see anything that looks physicaly burn are anything if not im lost............
i guess il have top pull out oll rusty and drop my turbo in my na body ahhhhhhhhhhhhhhhh
Reply With Quote
 
Reply

POST REPLY TO THIS THREAD

Go Back   Automotive Forums Car Chat > Nissan > 240Z | 260Z| 280Z | 300ZX (Past Z Cars)


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 12:56 PM.

Community Participation Guidelines | How to use your User Control Panel

Powered by: vBulletin | Copyright Jelsoft Enterprises Ltd.
 
 
no new posts