pulled blinking codes????

[TmaCular]

so i pulled the ecu on my 94 q45a today to get a consult read on the led lights...this is what i got

3 long...4 short then a pause then 5 long and one quick 6th short.. then it repeated again..

im unaware if these are 2 separate codes or one long one..can anyone help me by telling me what this is a code for..thanks a bunch u guys are always tons of help again 94 q45a 150k ive cleaned maf done fuel filter and plugs about 10k ago

[lino]

If you don't have acopy of the F.S.M.(Factory Service Manual), you can download it here:

http://www.nicoclub.com/FSM/Q45/1994_Q45/

Take a look at pages 51-55 of the EC Section:

http://www.nicoclub.com/FSM/Q45/1994_Q45/ec.pdf

I think your codes are:
Code 34 = Knock Sensor Circuit
Code 51 = Injector Circuit

Have you check your Active Suspension codes? To check them, go to pages 65-66 of the FA Section:

http://www.nicoclub.com/FSM/Q45/1994_Q45/fa.pdf

Using a Consult cable like the one Peter from ECUTalk has been supplying us with will give you the most details:

http://ecutalk.com/interface.aspx


Check out the following thread:

ecutalk-software-getting-active-suspens ... 03338.html

[TmaCular]

thanks so much i will look into all of those threads..

[tfitzs01]

34 is knock sensor

51 is injector analysis

www.nicoclub.com/archives/infiniti-ecu-codes.html

ohm your injectors through the harness to determine which ones are possibly malfunctioning. Over 14 ohms indicates a faulty injector. Also ohm the knock sensors. Can,t remember the values for that off my head.

A worst case scenario is to remove plenum, replace injector, knock sensors and both harnesses.

[TmaCular]

this is great news..can i ohm the harness without pulling the plenum..i have yet to do any big work to this car so im a little nervous ripping it apart

[TmaCular]

one last question would be will 96 injectors work with my 94..my dads friend has a 96 q in his junkyard he just got with low miles (front end collision but motor is fine) so he said i can take what i need for free so to keep my cost down is this a terrible idea to see if it fixes my issue for now til i replace all of them. also any advice to some stuff thats worth a pretty penny i could take off and would be a sufficient used part..anything of course that fits from 96 to 94..right now i plan on taking maf, injectors, some interior parts if the color matches and most likely the stereo and speakers...if anyone else needs anything please lemme know and ill try to pull that as well...and once again thanks for all your help..this is the greatest site ive ever used..used to own lots of dsms and there sites just not as efficient on the help...AWESOME

[goody90q45]

this is great news..can i ohm the harness without pulling the plenum..i have yet to do any big work to this car so im a little nervous ripping it apart

The bundle of connectors you're looking for is on the passenger side of the plenum. Maybe you'll get lucky and have #1, #2 or #8 injector be bad so you don't have to pull the plenum. KS should read around 550 ohms, FI S/B 12-14. Let us know your readings.

The 96 FI will work in your Q, the MAF will not, but grab it anyways and sell it in the parts forum. The 4 pin MAFs for the 95-96 Q are hard to come by.

[TmaCular]

perfect yea from what ive seen im hoping for that luck as well.. i will pull the maf for the selling purpose..maybe i can make a little cash on the side to pay for my inconvenience any other parts recommended that are rare or hard to come by that some Q lovers may be in need for? i will check for the harness tomorrow if i can and post my readings..thanks again for all the help

also he has a 92 in the yard so if anyone needs anything please send me a private message and of course everything will be super cheap as im paying nothing for it all

[kevindanielk]

TmaCular, you need to enable PM's, in your user panel.
Got it.

[Q451990]

What color is the interior? I'm looking at some black a-pilar covers with the tweeters.

Heath

[Lokim]

Grab all the modules (body control, fuel pump control, ECU, TCU, etc.), the fuel pump, every relay you can get your hands on, the alternator, the ABS actuator... All the expensive stuff!

[TmaCular]

im still waiting to find out what color the interior is and will post when i arrive in new york..that will be sunday and i will head to the yard to check it out sometime early that week..i will go for grabbing the modules...and pumps if i can..i will only have a few hours to go to town and rip everything i can that i can fit in my car...if the interior is black i will grab the tweeter pillars...do u need both sides?

[TmaCular]

ok i have ohmed the injectors...here are my readings


1-192.3
7-12.0
6-11.0
4-50.0
8-0.0 was not getting any reading
3-13.0
5-10.2
2-14.1-.2

knock sensors i could not ohm because multimeter didnt go to 550k i plan on just replaceing both anyways because of the code..so from this obviously i have 2 reading bad and i imagine the one reading nothing is completely shot??? also will all injectors fit to other 8 fits in 1 etc etc. im pulling the whole harness off the car so i will have 8 injectors and will ohm them to see which are salvageable thanks again guys

[blacklist74]

What part of NY is the junk yard located?

[goody90q45]

ok i have ohmed the injectors...here are my readings

1-192.3
7-12.0
6-11.0
4-50.0
8-0.0 was not getting any reading
3-13.0
5-10.2
2-14.1-.2

You beat the odds. Two of the three bad injectors, #1 and #8, can be changed out easily without pulling the plenum. The engine will run much better if you can change out just those two. Add a bottle of Redline S1 Fuel System Cleaner to the fuel tank when you're done and you may get some temporary relief on the #4 injector that's on it's way out.

Your luck is with you today. Go buy a lottery ticket and see if you can continue the streak!

[goody90q45]

......knock sensors i could not ohm because multimeter didnt go to 550k, i plan on just replaceing both anyways because of the code.....

KS code is a secondary code to the injector issue you're having. Chances are they're good and the correct voltmeter will verify. Ohm test them before going through the trouble of replacing them.

[TmaCular]

ok great..yea thank god i beat the odds haha..maybe i will buy a lottery ticket..i ohmed the knock sensors and i got 560 out of one and 540 out of another. i pulled the whole harness off the 92 will those injectors work with my car..also is there a trick to getting the injectors out. i can not get them out for the life of me without breaking them i fear. i am going to put those in for now for temporary relief. the car had 128k on it so hopefully they are ok..i also pulled maf ecu and all relays..ks harness and injector harness and plenum with iac attached and throttle body to sell. thanks again for all your help lemme know whats next

[goody90q45]

....i ohmed the knock sensors and i got 560 out of one and 540 out of another.

KS are ohming good. No need to change them other than for preventative maintenance while you have the plenum off.

...... i pulled the whole harness off the 92 will those injectors work with my car....

No. You have a 94Q and the FI are not interchangeable with a 90-93Q.

.....also is there a trick to getting the injectors out. i can not get them out for the life of me without breaking them i fear....

With lots of spray lube you need to be able to get the FI to twist 360 degrees in the fuel rail cup before they'll pull out. At this age they're so brittle that using any hand tool (i.e. screwdriver, pliers) will break the plastic housing. Once they're lubed enough to rotate I pull them out by forming a noose out of a small diameter (3/16") piece of rope and pulling straight up with a steady pressure. If lubed with penetrant they'll pop right out.

[TmaCular]

ok so pretty much in a nutshell i must buy 3 new injectors and the ones i pulled no good haha...i will take ur advice with the noose thats a great idea..i was practicing on my junkyard unit and yes all the plastics were breaking

[TmaCular]

ok so we concluded that the 92 injectors wont fit the 94...Why is this? everywhere i look to buy them sais 90-94..as far as i can tell the injectors are the exact same and the fuel rail and connectors. is the flow rate different? on ebay im looking to try to find some tested used ones for now due to the fact that im poor . and they all say 90-94 for application..could the car in the junkyard maybe had wrong year. everything under car was exact same as mine??? thanks again just got home from ny no problem with the injectors bad and now its time to go to work...also is there anyone on nico who say rebuilds or normally has some used ones i can get? thanks

[elwesso]

If you compare them side by side, you will see the 94 are not the same as 92 injectors.. The 94s have a different style tip, different physical sizes, etc...

I would personally get yourself 3 used from http://www.deatschwerks.com/catalog/ they are about $50 each (thats what I paid about a year ago)... it would CERTAINLY be a downgrade to install early injectors on a later car, even though TECHNICALLY you can get them to work...

The fuel rails are different, and the connectors are different, but the entire injector/fuel rail/harness assembly can be swapped from 90-93 to 94-96. However the 94 injectors are far superior to the early style ones (more reliable), and typically if 90-93 owners have more than 1-2 injectors to replace, they will upgrade to 94 style injectors.

[TmaCular]

ok great i will pick them up from that site.. i did not pull mine off the 94 yet so i didnt realize tips were different..thanks for the help i would definitely run the old ones i was hoping i could get them at 50 or 60 so thats perfect...will update when there in and shes purring again...appreciate all the help

[elwesso]

Not sure where you are in MI, but I may just be around the corner up in N.E Indiana...

[TmaCular]

im 15 min north of ann arbor in southeast MI

[TmaCular]

i went to the site and im not showing any injectors under infiniti in the q45 section...other cars use same i can look up ??

[lino]

i went to the site and im not showing any injectors under infiniti in the q45 section...other cars use same i can look up ??

Contact Chris and tell him you're a Nico member. Here's a recent thread with the contact info:

post5748308.html

[elwesso]

Yeah you definitely need to call, they dont have them listed on the website but they will have them available...

You'll want to say you need the 370cc injectors, phase 2

[TmaCular]

thanks for the heads up...spoke with chris i can only order a full set from him now which is 623 (a good price but not for me at the moment) so i did find 3 on ebay all from OEM working motors under 40k..not sure y they were pulled that early but he insured me they are 100% ohmed and flow tested to oem standards 44.99 each buy it now...for now im going that route until i can afford to just replace all of them along with KS when i decide to get off my fat A** and take the plenum off haha...when number 4 decides to go then it shall be time i guess ...also where can i purchase the redline from..i checked all local auto part stores and no one has heard of it or can get it for me...autozone, carquest and murrays

[Lokim]

RockAuto.com! $35/ injector after returning your old one!!!

[TmaCular]

when i looked at rockauto (my favorite site) i didnt see the OEM injectors on there for that price...are these OEM? not that it matters because i ordered allready but when i need more it wouldnt be a bad place to start