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Old 07-16-2006, 08:42 PM   #1
Jeff25RSti
Scooby Newbie
 
Member#: 83999
Join Date: Mar 2005
Location: Edmonton
Vehicle:
99 2.5rs
WRB

Default Just about finished engine swap

Hey Guys,

I am finishing up my 02 wrx into 99 rs engine swap and am trying to solve a major issue. The car will crank over but will not start. The fuel injectors are not injecting any fuel. The injectors themselves are working fine but the duty cycle signal from the ecu telling them to open is not there. I am leaning toward this being a problem with the ecu because I am also not getting any CEL codes. Even turing the car to the ON position the CEL will not light up. I am also not able to talk to it with a OBD II diagnostic tool. My question is would someone in the Edmonton area be willing to try this ecu in their wrx. I would like to prove for sure that this is the problem before I start trying to return this one or looking for a new one. Thanks for any help you guys can offer.

Jeff
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Old 07-17-2006, 01:57 AM   #2
fragment
Scooby Specialist
 
Member#: 8050
Join Date: Jul 2001
Chapter/Region: W. Canada
Location: Bugeye EJ207 - T3T04S
Vehicle:
2007 Wagon VF36

Default

Twenty bucks says its a ground issue.
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Old 07-17-2006, 02:17 AM   #3
soccer_freak_m@hotma
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Member#: 47261
Join Date: Nov 2003
Chapter/Region: W. Canada
Location: Edmonton, Alberta
Default

Quote:
Originally Posted by fragment
Twenty bucks says its a ground issue.
that or a plug somewhere isn't completely plugged in... not that I would know anything about that or anything...
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Old 07-17-2006, 02:45 PM   #4
Jitenshakun
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Member#: 61586
Join Date: May 2004
Chapter/Region: W. Canada
Location: Alberta
Vehicle:
2005 STi
WI and all the goodies

Default

You did include a WRX fuel pump controller as part of your install right?

-J
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Old 07-17-2006, 03:14 PM   #5
fragment
Scooby Specialist
 
Member#: 8050
Join Date: Jul 2001
Chapter/Region: W. Canada
Location: Bugeye EJ207 - T3T04S
Vehicle:
2007 Wagon VF36

Default

Quote:
Originally Posted by Jitenshakun
You did include a WRX fuel pump controller as part of your install right?

-J
Strictly speaking, you don't HAVE to use the WRX pump controller. Its just that the ECU expects one, and will throw a CEL if you don't use it.

The original post says that he doesn't even get a CEL light when turning the car on. I'm betting the ECU isn't getting all its voltages, and that could be several things, but the easiest thing to mess up is the grounds...
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Old 07-17-2006, 11:32 PM   #6
Jeff25RSti
Scooby Newbie
 
Member#: 83999
Join Date: Mar 2005
Location: Edmonton
Vehicle:
99 2.5rs
WRB

Default

I have included the fuel pump controller and as far as I can tell that works fine. Fuel pump primes and I have fuel pressure in fuel rail. As far as a ground issue, it is very possible. I have gone over the wireing several times and it all seems in order but its easy to miss something with this much wiring. I am getting power at the pins going to the ecu which should have power and the ecu itself gets a little bit warm so I think it is trying to do some work. Sensor voltages are alittle bit harder to read as most of them are waveforms. Ive swaped out the cam and crank shaft sensors so I think I can rule them out. I am getting spark when I crank the engine over so that shouldnt be a issue either. I have hopefully found another ecu to try so I will let you guys know how that turns out.

Jeff
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