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Old 10-07-2012, 04:34 PM   #1
25rsti
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Default HELP w Diagnosing NO Crank

I'm trying to complete my swap and need some help.

Car is a 2003 WRX with a JDM V9 Motor swap.

I've got the IAP wiring harness installed (integrates AVCS).

New battery
New Starter
New NPS
Lights turn on, fuel pump primes turn key to crank and nothing. Clock and radio dim only cranking.

Battery gets 12v. Starter gets 12v. Grounds get 12v.

TIA.
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Old 10-07-2012, 09:01 PM   #2
JRsleeper
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Ver 8 EJ207 4.44's

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What ECU are you using. The version 9 has an Immobilizer.

For twin scroll motors: Version 8, Version 8 Spec C, Version 9 Spec C ecu's do not use an Immobilizer.
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Old 10-07-2012, 09:22 PM   #3
25rsti
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V8 ecu.
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Old 10-07-2012, 09:32 PM   #4
BBarnes1
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Deleted

Last edited by BBarnes1; 10-08-2012 at 08:39 AM.
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Old 10-07-2012, 09:40 PM   #5
25rsti
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No. How do I go about that?

I did try my usdm ecu too will the same results.
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Old 10-07-2012, 09:47 PM   #6
JRsleeper
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Ver 8 EJ207 4.44's

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Stupid question. Do you have the coil packs plugged in correctly. White plugs on cylinders 1 and 2, black plugs on cylinders 3 and 4.

If swapped or wrong order car will not start most of the time.
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Old 10-07-2012, 09:53 PM   #7
25rsti
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Haha yes, No stupid questions. Everything is accepted.

Battery is good. Terminals are good. Starter is good. Grounds are good.
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Old 10-08-2012, 07:03 AM   #8
25rsti
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Bump this. I'm so confused.
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Old 10-08-2012, 07:25 AM   #9
1thumper
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have you looked at the neutral sensor? i think the v9 is opposite of the v7&8.
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Old 10-08-2012, 07:39 AM   #10
25rsti
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I did not. I was under the impression it didn't have to change. Plus I'm using a JDM V8 ecu, and the NPS is brand new too.
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Old 10-08-2012, 08:08 AM   #11
Vlad
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There's a clutch switch in addition to the NPS. As usual, if you don't step on the clutch, it does not crank. Maybe it's defective.
I'll check this morning if the fuel pump primes, if you put the key to on without stepping on the clutch.
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Old 10-08-2012, 11:23 AM   #12
25rsti
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My fuel pump primes when I turn the key on without trying to crank it.
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Old 10-08-2012, 11:30 AM   #13
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Ok, so check this out:

My car primes without stepping on the clutch, but certainly does not crank.
This means that with a bad clutch switch, your car could in theory, prime the pump, but not release cranking.
I would try to bypass the clutch switch, just as part of process of ellimination, to get it out of the way.
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Old 10-08-2012, 11:35 AM   #14
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I haven't tried with this new starter but on my first two starters I bypassed it straight on the starter. Both of those sounded like they spun but did not push foward to contact the flywheel.
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Old 10-08-2012, 06:57 PM   #15
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Any other ideas?
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Old 10-08-2012, 08:21 PM   #16
1thumper
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i believe that the switch is opposite on a v9. The v8 ecu would not make a difference as i think its the polarity is different. The pump will turn on and prime even with a damaged ECU but you checked your ecu by putting in your old USDM flashed ecu with the same issue so the problem is something else.
My moneys on the switch.
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Old 10-08-2012, 08:23 PM   #17
25rsti
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The NSS was perfectly fine in my friends car (which I bought the trans from)

Clutch switch works too, just checked it.

DRIVING ME CRAZY!! lol I just want to start it.
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Old 10-08-2012, 08:27 PM   #18
1thumper
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what year was the trans?
have you tried his ecu?
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Old 10-08-2012, 08:33 PM   #19
25rsti
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03 Trans.
No I haven't tried his ecu.
I tried my V7 ecu and my "untouched" usdm ecu.
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Old 10-09-2012, 04:19 PM   #20
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I dont know what else to do!
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Old 10-09-2012, 05:05 PM   #21
JRsleeper
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What's the back story on the car? Was it running before you swapped it? Or did you get the car not running to perform the swap?

What did you do to the wiring harness for the acvs? Only 1 IAP harness, or both.

Fuel lines are in correct order?

All 4 Coil pack pig tail harness are in the correct order. White in front, black in the rear.

Car gets spark.?

Timing belt is correct?

Does the car even turn over.

Facts.
03 wrx
Swapped in a known good 03 wrx 5 speed
Version 9 ej207
Version 7 ecu.
IAP harness.
New NSS
New starter
New battery
Clutch switch is good

Turn key, lights and dash power up, fuel pump primes. No start.

No start on jdm ver 7 ecu
No start on stock usdm wrx ecu

Are we missing something about the car or the swap? I figured it would be easier for others to read it if all the info is in one post.

Last edited by JRsleeper; 10-09-2012 at 05:11 PM.
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Old 10-09-2012, 05:15 PM   #22
25rsti
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Default

I bought the car as a shell. No motor, no drivetrain. 05 STi harness ECU DBW pedal assembly, ect..

I swapped 03 WRX harness, ECU DBC pedal assembly ect...

Coil Packs are correct.
Fuel Lines are correct (I think)
I don't think it's getting spark "yet" (beause it's not cranking at all)
Timing belt is correct and lines up perfectly.

What do you mean by "Turn over"?

Everything seems to be working till I try to turn the car on.

Everything else is correct.
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Old 10-09-2012, 05:28 PM   #23
JRsleeper
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Cranking, turning over same thing.

So you turn key. Nothing happens, starter does not make a sound even though its new and gets 12v.
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Old 10-09-2012, 05:33 PM   #24
25rsti
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Correct. Nothing.
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Old 10-09-2012, 07:42 PM   #25
25rsti
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Just switched clutch switches with a new one. Still nothing.
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