Welcome to the North American Subaru Impreza Owners Club Thursday August 28, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Normally Aspirated Powertrain

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 09-11-2010, 02:33 PM   #1
WRXbrother
Scooby Newbie
 
Member#: 141182
Join Date: Feb 2007
Chapter/Region: MWSOC
Location: Michigan/Illinois
Vehicle:
08 Impreza Hatch
Silver

Default Spark/ignition Help Please.

I did my eg33 swap, but any help with not getting spark will be helpful. I have the car cranking, I'm getting fuel. I have NO spark.

I traced it back and I am not getting a spark signal out of the ecu. I had another ecu, tried it and nothing changed.
Maybe I have a bad cam or crank sensor?
How Do I test those sensors?
Any other idea's?

I've been beating my head on this for a month. I'm considering doing a stand alone ignition system just to fix this probablem.

Please help,
Scott
* Registered users of the site do not see these ads.
WRXbrother is offline   Reply With Quote
Old 09-13-2010, 10:33 AM   #2
WRXbrother
Scooby Newbie
 
Member#: 141182
Join Date: Feb 2007
Chapter/Region: MWSOC
Location: Michigan/Illinois
Vehicle:
08 Impreza Hatch
Silver

Default

No idea's?

Well anyone know how to check my cam/crank sensors? To see if the are sending a signal to the ecu?
WRXbrother is offline   Reply With Quote
Old 09-13-2010, 01:35 PM   #3
rexburg22re
Scooby Newbie
 
Member#: 257609
Join Date: Sep 2010
Default

are you "tracing" using a wire diagram or some other method? I'd find a good wiring diagram and see where the sensors input to the ECU is and test there, you could also backprobe the connector at the sensor and hook up a multimeter and check for output. I don't know what the specs are for your motor but somebody on here should have that info... or you could maybe call a dealership and get lucky if there's someone who's actually helpful.
rexburg22re is offline   Reply With Quote
Old 09-14-2010, 04:41 PM   #4
basel_520
Scooby Newbie
 
Member#: 257798
Join Date: Sep 2010
Default

Im having the same problem, with a 01 ej20 wrx engine. with harness and v3 ecu from the donor car into a 05 rs chassis.

as far as i can tell the ecu wasnt getting power ( fuel pump wasnt priming at first) I got the power hooked up. things click in the engine bay but i still cant her to fire.

I wasnt getting injector or spark signals. made sure they were connected to the ecu. checked the cam and crank position sensors as per the diagnosis procedure in the workshop manual. every thing seems good.

engine turns over, but no spark (im 100% sure about the spark) and i dont think the injectors are working either.

maybe your problem isnt as bad as mine. if the fuel pump doesnt prime check ecu power.

also now that the ecu gets power the check engine light flashes ( i have the ecu power lines directly to battery.. all the wiring modifications is ghetto rigged till the engine fires up. then ill do it all up right.

hope that helps.. and maybe someone can help me. its been 2 months. and im stumped

edit: tried pulling DTC's but i my obd reader can communicate with the ecu. or something like that. and after sending power to the ecu. the fan cycles off low high off low high. etc....

Last edited by basel_520; 09-14-2010 at 04:57 PM.
basel_520 is offline   Reply With Quote
Old 09-15-2010, 12:10 PM   #5
motohippy
Scooby Newbie
 
Member#: 225882
Join Date: Oct 2009
Location: Central NJ
Vehicle:
2000 OBS
'88 BMW K75S

Default

Quote:
edit: tried pulling DTC's but i my obd reader can communicate with the ecu. or something like that. and after sending power to the ecu. the fan cycles off low high off low high. etc....
I'm by no means an expert on this. . .but that makes me wonder if the test mode connectors (little green 2 pin plug under the dash) are connected, and if that's causing problems for you. Question for those who know more. . .does the ECU like to be connected directly to the battery, or does it need something in between? I'd be afraid of potentially frying it that way. . .(but then, I'm not an electrical engineer, or really all that knowledgeable about automotive electronics in general)
motohippy is offline   Reply With Quote
Old 09-15-2010, 10:07 PM   #6
WRXbrother
Scooby Newbie
 
Member#: 141182
Join Date: Feb 2007
Chapter/Region: MWSOC
Location: Michigan/Illinois
Vehicle:
08 Impreza Hatch
Silver

Default

I am definitely getting power to the ecu.
My fuel pump is priming and turning on when it's supposed to.
My fuel injectors are definitely working.
My fans are turning on.

No signal for the coils coming out of the ecu. I have no idea what would cause this.
WRXbrother is offline   Reply With Quote
Old 09-15-2010, 10:31 PM   #7
Jessekrs123
Scooby Specialist
 
Member#: 236927
Join Date: Jan 2010
Chapter/Region: NESIC
Location: Oakville CT
Vehicle:
1993 Legacy Sedan
1984 BRAT

Default

A bad ECU ground could cause this. I had a loose ECU ground in my engine bay which would disable spark. Check all grounds, make sure they are nice and tight.
Jessekrs123 is offline   Reply With Quote
Old 09-15-2010, 11:25 PM   #8
basel_520
Scooby Newbie
 
Member#: 257798
Join Date: Sep 2010
Default

found the test mode connecters. disconnected them. fuel pump primes, everything does its thing properly. pulled codes from the ecu. got a cam position code. checked everything. cleared codes. and now even after i turn the engine over i get no codes (so crank angle sensor is good?)

I checked ground for coils and injectors. all is well. i dont know it might work for you. but i think i have another problem to sort out now. I dont know if i should worry about the immobilizer light in the dash. its a 05 chassis so it had an immobilizer. but its a 01 harness which ?SHOULDNT? have an immobilizer but theres a unit that plugs in about the same space. did any of the aus or jdm models have immobilizers back in 2001? anyone know any good threads to look up. search got me no help. (donor car is left hand drive).

if youre not getting spark but injectors get a signal. its probably not cam or crank sensors. try checking ignition ground.. clearing trouble codes if the check engine is on and check ?ignition signal wire maybe? lost
basel_520 is offline   Reply With Quote
Old 12-07-2010, 08:01 PM   #9
WRXbrother
Scooby Newbie
 
Member#: 141182
Join Date: Feb 2007
Chapter/Region: MWSOC
Location: Michigan/Illinois
Vehicle:
08 Impreza Hatch
Silver

Default

Boxersix helped me solve the issue. The ignition switch and another wire were not connected.

Cars been running great for a week now.
Going to need a LSD rear diff, I'm gettin too much wheel spin. And orders some winter tires, because the Direzza's were not cutting it in the snow.
WRXbrother is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Fuel Pump or Ignition Switch? Please help! emsmap Electrical & Lighting 16 09-06-2010 10:23 PM
Help please! Anyone with a 93-97 impreza ignition diagram? k22addict Electrical & Lighting 2 01-31-2010 11:58 AM
Need help having ignition problems. Please! Very Desperate. shadymilkman129 Electrical & Lighting 12 10-27-2008 12:31 AM
Spark Plug Help, please. (FXT) rim3 Service & Maintenance 6 03-06-2006 09:01 PM
Spark Plug Problem Help Please HighRevimpreza Service & Maintenance 2 09-15-2005 02:07 PM


All times are GMT -4. The time now is 09:30 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.