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Old 02-06-2015, 09:19 AM   #1
some dude
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Default 2006 WRX crank no start

Car: 06 WRX, completely stock its entire life, i'm original owner, car has 192k.

Around May of 2014, I took on the challenge of deleting my Aux Air Pump and my TGVs. I removed the air pump and both valves and installed blockoff plates. I read that with the 06' WRXs you could remove both valves and not worry about the atmosphere pressure sensor.

With the TGVs I removed everything, but I did not use a grinder to remove the middle part of the TGV so I still have 2 holes on each assembly instead of 1 large one on each. The butterfly valves and the rod they rotate on are gone. Blockoff plates were installed on the TGVs as well.

After I removed the air pump and TGV assembly, I drove the car for around 500 miles. I had CEL on the entire time. I have a Tatrix cable, but I never deleted the codes for the Air Pump and TGV. I had read that the car would be in limp mode after removal, but my car was fine. Boosted just like before, and drove just like before. The car currently has 6 codes thrown from removing these systems: P0414 2008 2011 2016 2021 2433.

Well after about 500 miles the car started to act up in just 1 way. It would sometimes need to crank over more than usual before it started. At first, it was fairly rare and random, but over the course of 2 weeks or so, it became more frequent and took longer to start. Eventually, it wouldn't start at all. just crank.

I take it to a guy 2 doors down who used to be a mechanic. He now works on cars out of his barn, where he has a lift and lots of tools. I pull my car over to his place, he diagnosis it as having a bad fuel pump. I buy a Walbro 255 online, and he installs it. Fixes the problem, car starts up immediately and runs like normal.

I don't have insurance on the car right now because it has been sitting since May without being driven, so after the fuel pump install, I wasn't able to daily drive it. However I did take it for 2-3 drives of around 5 miles. Car seemed fine.

About 3 weeks after fuel pump install, I went to start the car and it cranked but didn't start right away. Just like before. It eventually started and I took it for a quick drive. About a mile from my house there is a decent hill and while going up it i gave the car 2/3 throttle in 3rd gear. It started bucking and hesitating / jerking in a highly noticable way. I let off... drives normal until i try to go into boost and it got rough.

Took it home and parked it. Next time I tried to start it like a day or two later, it would just crank no start. And thats where it is stuck now. Just like before.

I read the codes, nothing was there accept for 1. Fuel Temp Sensor Input High. I don't remember the code, and I just went to pull the codes again to see what it was and it was not there this time.... I haven't driven the car since I first got that code.




So, my main question is: What is Fuel Temp Sensor used for and where is it? I need to have someone take a look at it since it threw a code for it. Would the car not start if that code is thrown? Is there any code that could get thrown that would prevent the car from starting?

I'm gonna get the car back to the mechanic soon so he can try to diagnose why the car is not starting. Seems like fuel pump / fueling issues would be the first place to start.
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Old 02-06-2015, 11:01 AM   #2
ProfessWRX
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Log fuel temp. You don't need the car running to do so, just key on.

If you need tuning help or codes cleared or whathaveyou PM me. I have the same car and will share all my old tunes or make you a basic one.
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Old 02-11-2015, 01:29 PM   #3
some dude
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Default 2006 WRX crank no start

^ thanks!

So I and the mechanic next door know, what should fuel
Pressure be when turning the key on, and once it starts and is at idle? (Can u check it then?)
And how much vacuum at idle?

Last edited by some dude; 03-08-2015 at 11:44 AM.
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Old 03-05-2015, 01:02 PM   #4
some dude
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Bump for normal fuel pressure readings on a stock 2006 wrx, so I can tell the guy working on it what is normal? He would need that info right? This guy works on domestic cars out of his house, and is looking at my car as a favor of sorts. I would like to give him the correct spec when he checks fuel pressure on the Walbro 255 he installed a few months ago.

43.5 psi base pressure comes to mind
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Old 03-08-2015, 11:43 AM   #5
some dude
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Anyone confirm? I found something for 2L WRX fuel pressure - 43.5 psi.

Still the same for 2.5L?
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Old 03-08-2015, 11:48 AM   #6
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Quote:
Originally Posted by some dude View Post
Anyone confirm? I found something for 2L WRX fuel pressure - 43.5 psi.

Still the same for 2.5L?
Yes, that is standard.
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Old 03-08-2015, 03:52 PM   #7
some dude
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Thx
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Old 03-08-2015, 10:11 PM   #8
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Quote:
After I removed the air pump and TGV assembly, I drove the car for around 500 miles. I had CEL on the entire time. I have a Tatrix cable, but I never deleted the codes for the Air Pump and TGV. I had read that the car would be in limp mode after removal, but my car was fine. Boosted just like before, and drove just like before. The car currently has 6 codes thrown from removing these systems: P0414 2008 2011 2016 2021 2433.
so kill the bloody codes, reset the ecu and move forward

That will give you a baseline to work from

you are DOING IT ALL WRONG
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Old 03-16-2015, 11:52 AM   #9
some dude
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^ Agreed. There are some small hurdles that I have been lazy about clearing, and I need to get those codes ignored.

I think I found the culprit on the crank no start and I was wondering if I could get a little input on what it is, what caused it (I did throw a code for fuel temp sensor high/open circuit), and if it is repairable.

Fuel pump assembly from my '06 WRX, as mentioned above, I had a Walbro 255 put in a few months ago. A seal near the top blew out.






and again, up close. It is split all the way open but still kinda rammed in there. I have not tried to remove it yet.
















I don't know what the gold and white housing is above the fuel pump. Is this repairable, or would I need to buy a new hanger assembly?
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Old 03-17-2015, 05:29 AM   #10
some dude
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Is this repairable? I looked at it yesterday and it looks like it all comes apart, but I don't want to do it until I know. I'm not familiar with fuel pumps at all.

What caused it?



Edit:

in trying to figure out what the white and gold thing is I went to 2 shops, independent place didn't know what it was, dealership parts dept. guessed it was a filter.

In regards to what caused this, i'm guessing the fuel pressure regulator went to 100% all the time, and the engine was not requesting near that amount of fuel, especially being stock, and the fuel pump being upgraded, and the pressure blew this seal out?

It had to be that the guy who installed the new fuel pump did something wrong, causing too much pressure somehow?

Last edited by some dude; 03-17-2015 at 12:15 PM.
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Old 03-17-2015, 03:25 PM   #11
Dave D.
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My '06 started doing the same thing. It's the first year with the immobilizer key. Turns out the battery in the key had slowly gone bad, shutting the car down. Do you have a spare key you can try?
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Old 03-17-2015, 09:29 PM   #12
some dude
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Did u read the latest posts? I know why it didn't start.
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Old 03-18-2015, 09:45 AM   #13
some dude
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See the small tear, might have been torn during Walbro install? So did this part recieve damage and fail, or was it normal and a pressure spike caused it? Any guesses? I'm leaning toward install damage.



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Old 03-18-2015, 09:49 AM   #14
some dude
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Old 03-20-2015, 07:55 AM   #15
some dude
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Anyone have any input as to why this happened? I'm gonna re-install in short order.
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