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Old 02-06-2013, 06:09 PM   #1
Bugstiwagon
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Join Date: Sep 2008
Chapter/Region: NWIC
Location: Montana
Vehicle:
02 WRX Wagooon MBP
06 Lan Evo IX WW

Default 02 wrx occasional no start issue.

Sorry for the length story, please read!!

Ok guys got a tough/weird random no start issue here. I have searched the forums a bunch, and either they don't apply to my situation or the thread was inconclusive. I have a 02 WRX. It's heavily modified you could say though I doubt that is relatable to the issue.

The car runs and drives great but now on 2 occasions it's had a random no start issue. It will crank and crank but nothing.

The first incident happened when it was a very hot day, I drove to work as usual but then when I tried to go out and leave it wouldn't start. Fuel pump would prime, there was pressure in the line and here's the kicker. It would start on ether but not stay running. I have up and got a ride home, the following morning I came back to work and it started right up! So thinking it was heat related I moved it into the shade and thought all was ok. Once again that afternoon it wouldn't start! So I had a friend come get it and tow it home. I searched and searched. Put in a new fuel pump and also a new fuel system relay. I thought the problem was solved!

Until recently, my buddy and I decided to take it out one night because it was snowing and slick out and we went to mess around in the snow. While doing so the car all of a sudden started spitting, sputtering and finally died. Once again wouldn't start. Cranked and cranked but wouldn't start. Once again my buddy came with his trailer. Took it home and left it in the driveway overnight. Went out in the morning and you guessed it! Turned right over. Like a champ, like nothing was wrong.

So now I'm paranoid to drive it, I've changed the fuel pump and like I said that relay. There are no cells and when this happens it will start on ether. There for that eliminates ignition issues, it's getting fuel up passed the fuel filter I pulled the line and checked it.

So it's so random I really have no where to start. I'm up for any ideas. I've thought maybe the crank/cam sensors but that would throw codes, maybe a bad temp sensor, bad grounds or even maybe a bad fuel pressure regulator.

Please guys ANY ideas or thoughts are welcome.

Sent from my iPhone
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Old 02-06-2013, 06:12 PM   #2
Bugstiwagon
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Join Date: Sep 2008
Chapter/Region: NWIC
Location: Montana
Vehicle:
02 WRX Wagooon MBP
06 Lan Evo IX WW

Default

This is my motor mod list, it's a copy paste from my old FS thread.

Engine:
JDM EJ207 Longblock (01 JDM V7 STi motor)
STi group N motor mounts
Beatrush Dogbone pitch mount
New oil pan+pump and Killer B pickup tube
Power Enterprise Timing belt (With all new OEM pulleys, and water pump)
Cosworth Timing Belt Quide
Power Enterprise Accessory Belt
Grimmspeed TGV Deletes (OEM TGVs)
Grimmspeed 8mm Phenolic Intake Manifold Spacers
Grimmspeed Port and polished intake manifold (OEM WRX)
Grimmspeed Port and polished throttle body (Has spacer)
APS hardpiping kit (Black)
APS 525 Front mount intercooler (Painted Black)
APS 50/50 BOV
APS 72mm CAI (With K&N Filter)
APS Turbo Inlet (Black)
Blouche 16g Turbo (Significantly small for this motor)
Tomei Uppipe
Tomei Un-equal length manifold (I know equal length makes more power but i wanted to retain that boxer growl)
Invidia Downpipe
Greddy TIc exhaust (Painted black, except for Ti tip)
Cusco Exhaust Hangers
Accessport Tuning (Custom maps by Clark Turner)
Grimmspeed AOS
Carbign Craft CF Alternator Cover
Samco Ancillery hose kit
Samco Coolant Line Kit
Koyo Aluminum radiator (Big core)
Mishimoto aluminum radiator shroud and mini fans (keeps it cool)
NGK Iridium Spark Plugs (one step colder)
Perrin Top Feed Fuel Rails (New Style, Black)
Deatschwerks 750CC Cobb Spec injectors
Deatschwerks 320LPH Pump (E85 ready )
Grimmspeed 3-port Boost control solenoid
OEM updated water tank (With CUSCO radiator cap)
Perrin Coolant overflow tank (nicely tucked behind headlight)
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Old 02-06-2013, 06:19 PM   #3
Bugstiwagon
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Join Date: Sep 2008
Chapter/Region: NWIC
Location: Montana
Vehicle:
02 WRX Wagooon MBP
06 Lan Evo IX WW

Default

Also wondering if this could have been a bad thing to do... The purge valve delete, sorry for the low quality photo.

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Old 08-13-2013, 08:02 PM   #4
Bugstiwagon
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Join Date: Sep 2008
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Location: Montana
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02 WRX Wagooon MBP
06 Lan Evo IX WW

Default

Bump! Still having this issue, I changed the Coolant Temp sensor, thought the issue was fixed but once again on a hot August day the cars stranded me. Just cranks cranks and cranks. I tried to flash on a different map thinking maybe the map was weird didn't work. I pulled the ECU and brought it inside putting it on the ac vent thinking maybe it was to hot. But no didn't change anything. Had to wait till the cool morning and it started right up!!!

I'm kind of ruling out any sensors in the engine bay being bad because if that was the case it would be effected by the heat of the engine running. But like I say it always runs fine besides these incidents.

I have no idea what to think of this...
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Old 08-14-2013, 06:37 AM   #5
oguitar
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Location: Albuquerque NM
Vehicle:
2002 WRX Wagon
Silver

Default

Have you checked the battery? How old is it?
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Old 08-14-2013, 11:00 AM   #6
Bugstiwagon
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Join Date: Sep 2008
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Location: Montana
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02 WRX Wagooon MBP
06 Lan Evo IX WW

Default

It's a fairly new battery. It's not the battery though, cuz it will crank crank crank strong and then in the morning after the heat is gone the car will start like a champ. It's a "heat" issue from the outside temperure. It's not getting fuel.

Do anyone know if the purge valve delete I listed above would cause issues? I did that to delete the clutter. However my car still has the charcoal box back by the tank. Maybe having that in the car still is causing some sort of EVAP issue causing the car to bugger? Idk

Trying for issues here.
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Old 08-28-2013, 09:22 PM   #7
cashnnoodle
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Default

dude i am having the exact same problem....but in my case it doesnt only happen on hot days...... it can be cold, raining, sunny or whatever.... it stills happen.... let me know if you get it resolved..
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Old 08-29-2013, 03:15 AM   #8
barefootdan
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Location: Phoenix, AZ
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2002 WRX Wagon
PSM

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I had this problem. Only on hot days when I worked and left my car in the Arizona sun for 4 or more hours. It wouldnt start! I replaced the starter and it is way better. Haven't had an issue where I can't get up and go. There's still some times where I must crank it 2 or 3 times but it'll turn over.
I have new plugs and fuel pump/lines too. Just did the recall on the fuel issue so I know its nothing fuel related.
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Old 08-29-2013, 03:50 AM   #9
Awd180
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Quote:
Originally Posted by barefootdan View Post
I had this problem. Only on hot days when I worked and left my car in the Arizona sun for 4 or more hours. It wouldnt start! I replaced the starter and it is way better. Haven't had an issue where I can't get up and go. There's still some times where I must crank it 2 or 3 times but it'll turn over.
I have new plugs and fuel pump/lines too. Just did the recall on the fuel issue so I know its nothing fuel related.
Starter does nothing once running, it has to be fuel, ignition, amps, and possibly vacuum. Not all but one, check fuel line pressure, frayed wires or loose grounds. Look up methods to test coil packs. Most would throw a code though, I have read problems with excessive engine heat killing coil packs possibly w/o throwing a code. Do you have a heat shield or blanket, heat wrapping?
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Old 11-25-2013, 07:10 PM   #10
delta_P
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Grey Metallic

Default Similar problem

Any updates on this ? I am having a similar issue. I'm about to go down the cam sensor path. Let me know if you have any updates or suggestions.

GP
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Old 11-26-2013, 01:21 AM   #11
warpspeedwrx
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sold :(

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sounds to me you have a bad crankshaft position sensor buddy. I would definitely check that.
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Old 11-26-2013, 10:40 PM   #12
BoboTheMonkey
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San Remo Red

Default

I'd be interested to find out any info on this as well. It has happened the last two years, but only when really hot over 100 degrees. Had some random cut outs at high rpms as well for a bit that I have not come across again.
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Old 11-27-2013, 01:10 AM   #13
WRXmeinMD
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MBP

Default

How about the MAF sensor? It does have a IAT that could be throwing off your fuel correct?

Just my .02
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Old 11-27-2013, 01:27 AM   #14
warpspeedwrx
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sold :(

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Quote:
Originally Posted by WRXmeinMD View Post
How about the MAF sensor? It does have a IAT that could be throwing off your fuel correct?

Just my .02
A dirty/contaminated MAF sensor typically will cause a lean condition and engine performance issue but unlikely to cause a no start. It never hurts to try cleaning it though. I have seen several instances of a faulty crank position sensor cause a crank but no start condition on subarus
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Old 11-27-2013, 01:56 AM   #15
delta_P
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Grey Metallic

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Quote:
Originally Posted by warpspeedwrx View Post

A dirty/contaminated MAF sensor typically will cause a lean condition and engine performance issue but unlikely to cause a no start. It never hurts to try cleaning it though. I have seen several instances of a faulty crank position sensor cause a crank but no start condition on subarus
Ok full disclosure on my situation. Bought this car last month and the previous owner told me it needed a fuel pump and possibly an o2 sensor and he already had them. The car drove fine but had a hesitation under boost. I changed the fuel pump(walbro) and o2 sensor. Reset the ECU and started the car. It ran super rough at idle +- 500 rpm for a couple of minutes and then smoothed out to a semi rough idle +- 200 rpm . Drove it around the block and it still had the hesitation then went super rough idle again and through cylinder misfires on all 4. I pulled it in the driveway and it wouldn't start, just cranked and cranked. I changed the fuel filter and it still wouldnt start. I let it sit for a couple hours and it fired right up but still idled rough. Cleaned the MAF and reassembled and it still ran rough.

Then I started taking things apart to check for vacuum leaks and bad grounds. I ended up changing the plugs, checked the coil packs, cleaned the grounds and checked the vacuum lines. I reassembled everything and fired it up . Idled smooth for 10 minutes so I fist pumped a couple times and took it for a burn. Still had hesitation under boost but ran pretty smooth. Made a quick stop and it wouldn't start. Let it sit for a while and it started but ran very rough and by the time I got it home it through CELs for all 4 cylinder misfires.

I just changed the battery tonight and cleaned all the battery connections and wires and ran an additional 8 gauge ground wire from the battery to the grounding lug on the intake manifold. It started up and idled the smoothest yet. Took it for a ride and it still hesitated under boost but ran better. When I pulled back in the garage it idled a little rough but still ran and even started back up.

Any thoughts ?

Thanks for weighing in .

GP
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Old 11-27-2013, 07:57 PM   #16
alexandern05
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Location: delaware county pa
Vehicle:
04 wrx v7 sti swap
agile tuned 389hp 342ftlb

Default

Check cam and crank sensors cam position sensor is known to go bad on ej207 v7 check the connection.to it the pigtail gos bad on the cam sensor back by the Turbo I just replaced mine it started with sluggish and check engine only at high rpm then it wouldn't start I might have a used one laying around for you to try
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Old 11-27-2013, 09:14 PM   #17
BeastianSTI
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When it happens, pop the hood and unplug an injector. See if it will start then. Could be a fuel pressure issue
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Old 01-08-2014, 11:50 PM   #18
delta_P
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Update: finally checked the fuel pressure and it would slowly rise to 100+ psi resulting in injector malfunction. Replaced fuel pressure regulator and it fixed the problem.
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