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Old 03-24-2008, 11:27 PM   #1
vanddelor
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Default need help with hybrid...won't start

ok...i've searched and found some tips but none of it will make my car start...
like alot of people here...i'm doing the 257 block with my wrx heads...
everthing is put together by me and i'm positive i did everything by the books. I primed the system before starting and when i go to start the car...it only turns over but will start...the starter pretty much just turns the flywheel and nothing happens...any ideas on where else to look/check..

i've checked all engine harnesses/connections...(including crank and cam sensors)..good
i've checked for fuel from fuel filter...good
fuel lines are hook up correct...
i've checked for spark...good
SOC & SOH on Battery...100%

i just don't know or can't think of where else to check/look...anyhelp would be greatly appreciated...
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Old 03-25-2008, 12:13 AM   #2
wrxG
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it really sounds like a crank positon sensor problem .. but u say you've cheked it.. are you sure its good? .. have you cheked the timing? what kind of injectors are you running?
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Old 03-25-2008, 11:08 AM   #3
bearpaws1973
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I bought a wiring harness from a 2003 wrx, the seller said it was in perfect shape, and it was in good shape. I rebuilt my friend's motor (this is the motor the harness was for), double checked everything, and it wouldn't fire! Well I went to the crank position sensor, and found a broken wire under the convoluted tubing, re-attached wire, and it fired right up.

To make a long story short, recheck your wiring going to the cam and crank position sensors.

Jay
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Old 03-25-2008, 11:50 AM   #4
vanddelor
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ok...i will check again both crank and cam sensors...thanks...
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Old 03-25-2008, 11:54 AM   #5
vanddelor
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how do you go about checking if the sensors are good..??..i do have a multimeter...just can't remember how to...
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Old 03-26-2008, 12:32 AM   #6
vanddelor
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now onto the engine....i checked for cel with ecu explorer and the only one that popped up was the tgv code...(tgv deletes) and checked the cam/crank sensors with that and they are both showing readings so that means the sensors are in good working condition...
checked for fuel at the injectors and yes...we have fuel...
checked for spark...(again)...we have spark...
checked ALL engine grounds...good...
feels like i've narrowed everything down ALOT...but just something is still missing...
i'll try to post up a video of how/what is sounds like or doing...

what else do you think could be the caused...i went through fuel pressure/fuel injected/crank sensor/cam sensor diagnostics and one just kept on jumping to the other...'ie. if you have pressure, refer to fuel injected. and then if injectors are good, refer to fuel pressure.'
and thanks so much for all the help guys...
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Old 03-26-2008, 01:32 PM   #7
bearpaws1973
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So you fired up? Do you have new injectors? Have you calibarated your injectors? When I upgraded injectors (810cc) my car ran like a** until I changed the flow. Also did you remove the small plastic housing for the TGV? It is spring loaded, and if you don't twist from a 90 degree position and retighten the car idles like junk.
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Old 03-27-2008, 12:15 AM   #8
vanddelor
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no and yes...the car ONLY turns over...but will not fire, but there IS spark, and there IS fuel...i even sprayed some starter fluid into manifold via the brake boost nipple...and still no start...brand new red top battery...and injectors are all stock...and for the tgv's...i took out everthing and jb welded it...so the harnesses are just hanging there...

i'm just gonna go but me two new crank and cam sensors tomorrow and hope that it's that...even though my computer tells me that it's getting readings from them...i really hope this is it...
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Old 03-27-2008, 01:01 AM   #9
Splinter
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Does it sound normal when its turning over?
Or does it sound like its turning too easily?
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Old 03-27-2008, 03:06 AM   #10
rooobaru
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you got spark plugs in there????

seriously,how does the motor turn over? like a *jah,jah,jah,jah....*

or like it has no compression? just a *whirrrrrrrr....*
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Old 03-27-2008, 04:10 AM   #11
AWDWRXLOVER
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my buddy was having issue with his hybrid too. said it wouldnt run for crap. he finally sourced his problem, the knock sensor. it was only tightened as much as he thought it needed to be, turns out it needed 17ftlbs. he reset the ecu and its a whole new car he said.
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Old 03-27-2008, 10:11 PM   #12
rooobaru
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timing belt slipped/not installed correct???

connectors for coils swapped???
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Old 03-27-2008, 10:18 PM   #13
Touge Tune
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Are you sure that the left and right bank inlet cams are in correct order? If you have LHS and RHS swapped around the car won't start even if you have fuel and spark.
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Old 03-28-2008, 01:21 AM   #14
edo2000
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+1 on the timing belt/cam timing comments. I speak from experience, if its not correct, the engine won't fire.

The coil connectors are easier to check...
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Old 03-28-2008, 01:58 AM   #15
rooobaru
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Let us know when you get it fixed...

We'll get this thing runnin somehow....

I'm still in the middle of doing my own 257 swap,so I'm sure i'll run into SOMETHING....
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Old 03-28-2008, 10:34 PM   #16
vanddelor
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ok..it's running now...just waiting for a break in map...

problem was...while i had the engine out...i was putting on the timing belt...and was so excited that i missed one really important step...i forgot to put #1 piston at TDC...so...that's why it didn't start...after i fixed that...it started right up...ah..i'm soooo glad we got this figured out...thanks again for all of your guys' tips and support....
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Old 03-29-2008, 03:01 AM   #17
rooobaru
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nice...
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Old 03-30-2008, 01:02 AM   #18
wrxG
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lucky the valves didnt get damaged..
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Old 04-03-2008, 12:32 PM   #19
vanddelor
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ok..the car starts and runs...but it wont idle right...

question for those with hybrids is did you guys have to adjust IACV for the car to idle correctly...??
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Old 04-03-2008, 09:47 PM   #20
luchin
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try to find a vacum leak, i am pretty sure of that i have a couple too
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Old 04-03-2008, 09:51 PM   #21
wrxG
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if u have tgv deletes it wont idle right
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Old 04-04-2008, 02:03 AM   #22
vanddelor
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where else is there a vacuum..??..there's the one for bov, brake booster, pcv, fuel pressure reg, and the other one that goes to fuel lines behind the alt. where's else is there one that i may be missing..??..thanks..
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Old 04-04-2008, 03:08 AM   #23
rooobaru
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Quote:
Originally Posted by wrxG View Post
if u have tgv deletes it wont idle right
it will idle and drive normal,but will throw a cel for the tgv sensors,unless you keep the rod/motors/sensors in...
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Old 04-04-2008, 03:12 AM   #24
rooobaru
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tmic,or fmic...either way check your couplers...bov return...make sure the inlet is tight on the turbo...

check/clean maf and make sure it faces the right direction...

just throwing stuff out there....
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Old 04-04-2008, 04:26 AM   #25
badblackwrx
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I was thinking your timing was off as I read the thread, so I am glad you found out that problem before you messed up your valves. I recently did an ej257 swap with stock heads, sti headgasket, fp evo III 16g and supporting mods. Although my car started right up I had bad hesitation, funny idle and little power. I did an intake pressure test by using a 2 1/2" pvc pipe with a valve stem attached. placing the pipe into the turbo inlet and giving it about 10 psi I was able to identify one of my problems, a torn stock turbo inlet. It looked good when I put it on, but tore shortly after as I was breaking in the new motor. I ended up replacing all my vaccum lines along with a new silicone turbo inlet and it now holds decent pressure in the intake. Once I got the intake properly secured the car idled a lot better, but still hesitated and was down considerably on power. The problem is what awdwrxlover pointed out, and I am that very car he spoke of. My knock sensor was only tightened to around 14 ft lbs. When I put it at 17 ft lbs the car no longer detected false knock and started running like the hybrid motor it is supposed to be... a torquey sob. I am still currently on a base break in map, but as awdwrxlover can attest it is a pretty stout setup once running decent. Dyno day to come shortly. Good luck.
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