GalantVR4.org The Mitsubishi Galant VR-4 Forum
Galant VR-4 Forums » Galant VR-4 » Technical Discussions » No injector pulse...
Previous thread Next thread

No injector pulse...


Kenny_Kline
belligerent idiot
1370/2000


Galant VR-4 org Post #: 1200808 posted 02/06/15 10:34 AM     Remind Me!  Send Private Message   Edit Post      
Have all day today to try to figure this issue out. Need to diagnose why no injector pulse on my personal car. 92 Eagle Talon Lets start from scratch.

Currently during crank, I get spark across the board but no injector pulse. I am getting power (11.9v) at every injector plug. I know what to check first and so on but ive been there done that now its time to start over. Please help


Edited by Kenny_Kline (02/06/15 10:35 AM)

Posts: 789 | From: Seekonk, MA | Member Since: 12/27/07 | IP: (73.186.60.53) | Report this post to a Moderator

strokin4dr
fighting them with a large needle
1280/2000
1135/2000


Galant VR-4 org Post #: 1200809 posted 02/06/15 10:47 AM     Remind Me!  Send Private Message   Edit Post      
I'd start with the ecu. If you are getting spark then you know the CAS is working.
If the ecu is seeing this signal and not grounding the injectors my thoughts are it's probably the culprit.

-Ryan



1908- sold and missed.
1280- 2.3, FP 35R, E85, etc.
1135- 100% stock (sold)
'93 Mirage hatch- 4g63, AWD, etc (hoarding for build)

Posts: 2767 | From: Savannah, GA | Member Since: 08/30/05 | IP: (161.38.221.114) | Report this post to a Moderator

Kenny_Kline
belligerent idiot
1370/2000


Galant VR-4 org Post #: 1200812 posted 02/06/15 11:09 AM     Remind Me!  Send Private Message   Edit Post      
Not only did I send my ecu out to ECMlink to have it tested/caps replaced, but I questioned thier work/test and have another 1G ecu here to test and still no injector pulse.


Edited by Kenny_Kline (02/06/15 11:10 AM)

Posts: 789 | From: Seekonk, MA | Member Since: 12/27/07 | IP: (73.186.60.53) | Report this post to a Moderator

thecman02
too lazy to look
580/1000


Galant VR-4 org Post #: 1200815 posted 02/06/15 11:31 AM     Remind Me!  Send Private Message   Edit Post      
Did you do a continuity check from the ECU to each injector? Are you running low impedance or high impedance injectors? If your running low impedance injectors I'd make sure your resistor pack didn't open up.



580/1000
2013 Max Effort Winner
-Chris

Posts: 913 | From: Kalamazoo,MI | Member Since: 11/03/07 | IP: (69.128.217.6) | Report this post to a Moderator

Kenny_Kline
belligerent idiot
1370/2000


Galant VR-4 org Post #: 1200816 posted 02/06/15 11:35 AM     Remind Me!  Send Private Message   Edit Post      
Impedance has nothing to do with injector pulse. My injectors are unplugged. But to answer your question, low impedance FIC 1350cc with injector resistor pack installed. Also, even if i was running a bad injector resistor pack, that would be a power issue, not a ground issue. I have confirmed the wires are good from the ECU to each injector. I also tested each wire at the ECU output to injector ruling out wire to see if it gets ground when I crank and it doesnt output a ground pulse from the ecu eliminating the engine harness


Edited by Kenny_Kline (02/06/15 11:36 AM)

Posts: 789 | From: Seekonk, MA | Member Since: 12/27/07 | IP: (73.186.60.53) | Report this post to a Moderator

prove_it
my racist jokes aren't actually funny
715/1000
1284/2000


Galant VR-4 org Post #: 1200820 posted 02/06/15 11:44 AM     Remind Me!  Send Private Message   Edit Post      
Try swapping the CAS then. Otherwise, you've addressed the wiring and ECU. You have link, so check your datalog, pull up anything relevant on the graph and look for an odd reading.

It really sounds like the ECU is at fault, but with two that don't work, sounds like the ECU does not know your starting the car/engine rpms. Check all powers and grounds to the ECU also. Can't remember if a bad Main relay would cause this or not. Check into that guy.



#1284/2K NB, Totaled
#715/1K KG, Rebuilding
02 Acura TL daily duty unit

12yr+ Vr4 owner.
Honda/Acura master tech.
Family Guy

Posts: 4201 | From: Sioux Falls, SD | Member Since: 07/04/08 | IP: (24.230.93.110) | Report this post to a Moderator

Kenny_Kline
belligerent idiot
1370/2000


Galant VR-4 org Post #: 1200824 posted 02/06/15 11:47 AM     Remind Me!  Send Private Message   Edit Post      
CAS is working properly and I bench tested it also but I guess I could swap it. It would be a deperation move.

Log looks fine and even looked at by Tom himself at ECMlink.

Maybe this is connected but I couldnt connect to ecmlink and I had to actually jump the wire at the ecu to ground to connect. Not sure if that is related to the issue. I can start jumping grounds. TDC and CAS both input signals 5v into the ECU I tested it at the ECU side. What are the chances that I picked up a 2nd bad ecu and ecmlink didnt test/repair my other ecu Highly unlikely.

The main relay I will have to look up where that is located but I think that powers my fuel pump and fuel pump is working correctly during cranking 40psi on the gauge

Ill make a quick video and post on youtube for you to see whats going on


Edited by Kenny_Kline (02/06/15 11:49 AM)

Posts: 789 | From: Seekonk, MA | Member Since: 12/27/07 | IP: (73.186.60.53) | Report this post to a Moderator

prove_it
my racist jokes aren't actually funny
715/1000
1284/2000


Galant VR-4 org Post #: 1200825 posted 02/06/15 11:51 AM     Remind Me!  Send Private Message   Edit Post      
Check your ecu grounds. You could have a loose or bad ground. That seems likely at this point. If I remember right, the ECU has multiple grounds and the sensors/injectors have their own dedicated ground from the ecu.



#1284/2K NB, Totaled
#715/1K KG, Rebuilding
02 Acura TL daily duty unit

12yr+ Vr4 owner.
Honda/Acura master tech.
Family Guy

Posts: 4201 | From: Sioux Falls, SD | Member Since: 07/04/08 | IP: (24.230.93.110) | Report this post to a Moderator

Kenny_Kline
belligerent idiot
1370/2000


Galant VR-4 org Post #: 1200826 posted 02/06/15 12:00 PM     Remind Me!  Send Private Message   Edit Post      
Do you happen to know where they all ground out at? I have a bunch of wires that ground near the ecu on the radio bracket. The only other ground I noticed in the engine bay are a ground from firewall to manifold, ground for starter bolt to neg battery terminal then a ground from the battery terminal to strut tower. I bought the car as a rolling shell and I dont know what was taken out of it but previous owner cant think of anything that would cause this. i know the car ran before because I raced it a few times lol

Also during cranking I am getting no tach signal but im getting spark?

Upddate nevermind my coil pack in unplugged not allowing tach signal disregard. I have tach signal


Edited by Kenny_Kline (02/06/15 12:07 PM)

Posts: 789 | From: Seekonk, MA | Member Since: 12/27/07 | IP: (73.186.60.53) | Report this post to a Moderator

thecman02
too lazy to look
580/1000


Galant VR-4 org Post #: 1200827 posted 02/06/15 12:12 PM     Remind Me!  Send Private Message   Edit Post      
Quoting Kenny_Kline:

Impedance has nothing to do with injector pulse. My injectors are unplugged. But to answer your question, low impedance FIC 1350cc with injector resistor pack installed. Also, even if i was running a bad injector resistor pack, that would be a power issue, not a ground issue. I have confirmed the wires are good from the ECU to each injector. I also tested each wire at the ECU output to injector ruling out wire to see if it gets ground when I crank and it doesnt output a ground pulse from the ecu eliminating the engine harness




I only asked to know if you have the resistor pack inline or not. There was a guy with high z injectors with resistor pack that had the same issues.

How long ago was your car running? Just curious.



580/1000
2013 Max Effort Winner
-Chris

Posts: 913 | From: Kalamazoo,MI | Member Since: 11/03/07 | IP: (69.128.217.6) | Report this post to a Moderator

Kenny_Kline
belligerent idiot
1370/2000


Galant VR-4 org Post #: 1200828 posted 02/06/15 12:17 PM     Remind Me!  Send Private Message   Edit Post      
It has never ran since I owned it. I bought it as a shell. Not sure what that has to do with injector pulse though.

Posts: 789 | From: Seekonk, MA | Member Since: 12/27/07 | IP: (73.186.60.53) | Report this post to a Moderator

thecman02
too lazy to look
580/1000


Galant VR-4 org Post #: 1200830 posted 02/06/15 12:30 PM     Remind Me!  Send Private Message   Edit Post      
I'm trying to figure out what things could have happened between the time you said you raced it to the time you got it as a rolling shell. What's the battery voltage of the car when you crank it? If the battery is too low the injectors won't fire. Do you have another set of injectors you could put in? Was the no injector pulse from the ecmlink log or did you have a noid light plugged in?



580/1000
2013 Max Effort Winner
-Chris


Edited by thecman02 (02/06/15 12:31 PM)

Posts: 913 | From: Kalamazoo,MI | Member Since: 11/03/07 | IP: (69.128.217.6) | Report this post to a Moderator

prove_it
my racist jokes aren't actually funny
715/1000
1284/2000


Galant VR-4 org Post #: 1200831 posted 02/06/15 12:36 PM     Remind Me!  Send Private Message   Edit Post      
Quoting Kenny_Kline:

It has never ran since I owned it. I bought it as a shell. Not sure what that has to do with injector pulse though.




We're just trying to help. Don't get frustrated with weird questions. Use this to check for power and ground at each pin that needs power/ground.

Start with this. Really sounds like a power/ground issue. Also with the grounds, be sure to measure the resistance to ground from the connector. It could have continuity, but too much resistance will cause issues.

Ecmlink ECU pinout



#1284/2K NB, Totaled
#715/1K KG, Rebuilding
02 Acura TL daily duty unit

12yr+ Vr4 owner.
Honda/Acura master tech.
Family Guy


Edited by prove_it (02/06/15 12:37 PM)

Posts: 4201 | From: Sioux Falls, SD | Member Since: 07/04/08 | IP: (24.230.93.110) | Report this post to a Moderator

Kenny_Kline
belligerent idiot
1370/2000


Galant VR-4 org Post #: 1200832 posted 02/06/15 12:39 PM     Remind Me!  Send Private Message   Edit Post      
Injectors are irrelevant! I have a noid light plugged in. Injectors arent even plugged in. I threw the injectors in the woods and now I have no injectors. No more injector questions

The car was a running car until oil pump failed and took out the motor. he sold the motor, ecu, injector resistor pack out of it. I bought the rest. Not sure what this has to do with diagnosing injector pulse but I just checked tire pressure, all 4 tires were at 32psi.

I jumped ground at the ECU pin #101 and #106 and still no pulse. Only other ground the ecu pins are are pin #17 & #24 (output ground to sensors). ECU only has 2 major ground inputs and ive jumped them both eliminating all wiring of grounds.

Ideas?

Posts: 789 | From: Seekonk, MA | Member Since: 12/27/07 | IP: (73.186.60.53) | Report this post to a Moderator

Kenny_Kline
belligerent idiot
1370/2000


Galant VR-4 org Post #: 1200833 posted 02/06/15 12:43 PM     Remind Me!  Send Private Message   Edit Post      
The goal here is to just get ECU to pulse ground at pins 51, 52, 60, 61. Thats it. Battery voltage is at 11.9v as already stated twice

Posts: 789 | From: Seekonk, MA | Member Since: 12/27/07 | IP: (73.186.60.53) | Report this post to a Moderator

prove_it
my racist jokes aren't actually funny
715/1000
1284/2000


Galant VR-4 org Post #: 1200834 posted 02/06/15 12:44 PM     Remind Me!  Send Private Message   Edit Post      
Power comes in at different pins. How do those look?



#1284/2K NB, Totaled
#715/1K KG, Rebuilding
02 Acura TL daily duty unit

12yr+ Vr4 owner.
Honda/Acura master tech.
Family Guy

Posts: 4201 | From: Sioux Falls, SD | Member Since: 07/04/08 | IP: (24.230.93.110) | Report this post to a Moderator

prove_it
my racist jokes aren't actually funny
715/1000
1284/2000


Galant VR-4 org Post #: 1200835 posted 02/06/15 12:45 PM     Remind Me!  Send Private Message   Edit Post      
Which type of noid light are you using? Some won't trigger due to the resistor pack.



#1284/2K NB, Totaled
#715/1K KG, Rebuilding
02 Acura TL daily duty unit

12yr+ Vr4 owner.
Honda/Acura master tech.
Family Guy

Posts: 4201 | From: Sioux Falls, SD | Member Since: 07/04/08 | IP: (24.230.93.110) | Report this post to a Moderator

Kenny_Kline
belligerent idiot
1370/2000


Galant VR-4 org Post #: 1200836 posted 02/06/15 12:47 PM     Remind Me!  Send Private Message   Edit Post      
Noid light works, I verified this on other cars.

Posts: 789 | From: Seekonk, MA | Member Since: 12/27/07 | IP: (73.186.60.53) | Report this post to a Moderator

Kenny_Kline
belligerent idiot
1370/2000


Galant VR-4 org Post #: 1200837 posted 02/06/15 12:48 PM     Remind Me!  Send Private Message   Edit Post      
Power comes in at 102 107 and they are fine and get voltage

Posts: 789 | From: Seekonk, MA | Member Since: 12/27/07 | IP: (73.186.60.53) | Report this post to a Moderator

prove_it
my racist jokes aren't actually funny
715/1000
1284/2000


Galant VR-4 org Post #: 1200844 posted 02/06/15 01:39 PM     Remind Me!  Send Private Message   Edit Post      
Quoting Kenny_Kline:

Noid light works, I verified this on other cars.




Other dsms... Point is there are high and low impedance noid lights. Just making sure so I can help you out.



#1284/2K NB, Totaled
#715/1K KG, Rebuilding
02 Acura TL daily duty unit

12yr+ Vr4 owner.
Honda/Acura master tech.
Family Guy

Posts: 4201 | From: Sioux Falls, SD | Member Since: 07/04/08 | IP: (24.230.93.110) | Report this post to a Moderator

Kenny_Kline
belligerent idiot
1370/2000


Galant VR-4 org Post #: 1200852 posted 02/06/15 03:12 PM     Remind Me!  Send Private Message   Edit Post      
Car runs. Bad ecu. When I had the replacement ecu in from a running car, I forgot to plug in the cam sensor lol. But now that it runs, i put my original ecu in and it doesnt run but as soon as I put in the ecu i got for testing, it runs. Both ECUs are 91-94 ecus.

So yeah... Been chasing my tail forever trusting the fact that I had a good working ecu and tested working ecu -_____-

Posts: 789 | From: Seekonk, MA | Member Since: 12/27/07 | IP: (73.186.60.53) | Report this post to a Moderator

prove_it
my racist jokes aren't actually funny
715/1000
1284/2000


Galant VR-4 org Post #: 1200853 posted 02/06/15 03:26 PM     Remind Me!  Send Private Message   Edit Post      
Makes sense. I knew it had to be something stupid. Always is in the end. Glad to help.



#1284/2K NB, Totaled
#715/1K KG, Rebuilding
02 Acura TL daily duty unit

12yr+ Vr4 owner.
Honda/Acura master tech.
Family Guy

Posts: 4201 | From: Sioux Falls, SD | Member Since: 07/04/08 | IP: (24.230.93.110) | Report this post to a Moderator

bradrs
Member


Galant VR-4 org Post #: 1200856 posted 02/06/15 04:07 PM     Remind Me!  Send Private Message   Edit Post      
Quoting Kenny_Kline:

Injectors are irrelevant! I have a noid light plugged in. Injectors arent even plugged in. I threw the injectors in the woods and now I have no injectors.




Now that you solved it, you should go find those injectors.

Posts: 128 | From: Alta Loma, CA | Member Since: 02/01/14 | IP: (71.177.137.146) | Report this post to a Moderator

Kenny_Kline
belligerent idiot
1370/2000


Galant VR-4 org Post #: 1200857 posted 02/06/15 04:14 PM     Remind Me!  Send Private Message   Edit Post      
Eh... I kind of want to run Injector Dynamics High impedance injectors anyways. Yours free if you can find them in the 3' of snow. About another 18" coming Monday so hurry up

Posts: 789 | From: Seekonk, MA | Member Since: 12/27/07 | IP: (73.186.60.53) | Report this post to a Moderator

ktmrider
Cool Guy Crowd


Galant VR-4 org Post #: 1200872 posted 02/06/15 06:41 PM     Remind Me!  Send Private Message   Edit Post   
Quoting prove_it:

Quoting Kenny_Kline:

It has never ran since I owned it. I bought it as a shell. Not sure what that has to do with injector pulse though.




We're just trying to help. Don't get frustrated with weird questions. Use this to check for power and ground at each pin that needs power/ground.

Start with this. Really sounds like a power/ground issue. Also with the grounds, be sure to measure the resistance to ground from the connector. It could have continuity, but too much resistance will cause issues.

Ecmlink ECU pinout


LOL K_K at his finest ( ask for help, doesn't give all relevant info, then berates/belittles those trying to help ).

Glad you found the problem.



Mike O.
#464/1000 - Sold
05 Legacy GT - slush box
#86/2000 - Sold ( again )

Posts: 3120 | From: Portland, OR | Member Since: 09/10/07 | IP: (69.254.152.228) | Report this post to a Moderator


Pages: 1 | 2
Previous thread Next thread

Extra information
0 registered and 9 anonymous users are browsing this forum.

Galant VR4.org Moderator:  curtis, steve, atc250r, jcgalntvr4-244, cheekychimp, jepherz, Rausch, toybreaker, iceman69510, pot, FlyingEagle 

Print Thread

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled

Rating:
Thread views: 6594

Rate this thread


News & Events: News | Events
Galant VR-4: Newbies | General VR4 Discussions | Technical Discussions | How To and Info Archive
Marketplace: Parts For Sale | Cars For Sale | Good Guys | Bad Guys
Community: Members' Showcase

Contact Us | Privacy statement GalantVR-4.org

Generated in 0.081 seconds in which 0.04 seconds were spent on a total of 15 queries. Turbo powered.


Hertz's Galant VR-4 Page