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12-05-2012, 09:56 PM
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#1 |
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1NZ-6spd
Drives: '05 6-Spd Vitz RS Join Date: Oct 2008
Location: Oshawa, Ontario, Canada
Posts: 2,967
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Are you still running the stock fuel system?
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12-06-2012, 02:39 AM
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#2 |
 
Drives: 08 Yaris Turbo; 06 tC Turbo Join Date: Jan 2010
Location: New Jersey
Posts: 875
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Yes. The pump and regulator are the only things I haven't checked, mainly because I can't find a thorough way to do so.
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12-06-2012, 07:46 AM
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#3 |
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1NZ-6spd
Drives: '05 6-Spd Vitz RS Join Date: Oct 2008
Location: Oshawa, Ontario, Canada
Posts: 2,967
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What's the intake air temp reading?
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12-06-2012, 11:54 AM
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#4 |
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Drives: 08 Yaris Turbo; 06 tC Turbo Join Date: Jan 2010
Location: New Jersey
Posts: 875
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Completely fine. So is the coolant temp.
Is the regulator the thing on the fuel rail? I remember reading somewhere it was part of the pump assembly... |
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12-06-2012, 12:02 PM
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#5 |
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1NZ-6spd
Drives: '05 6-Spd Vitz RS Join Date: Oct 2008
Location: Oshawa, Ontario, Canada
Posts: 2,967
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Yeah part of the pump. Almost seems ECU related. The way it runs fun in closed loop while cold then like crap when in open.
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12-06-2012, 12:28 PM
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#6 |
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Drives: 08 Yaris Turbo; 06 tC Turbo Join Date: Jan 2010
Location: New Jersey
Posts: 875
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I'm definitely a little worried about that, but everything else seems to be running fine. I'd expect to see more adverse side effects if the ECU was crapping out (esp. from what we've seen with yaris2010RS). It's almost like the only problem is fuel delivery is being adjusted too slowly. For example, when I hit the gas during idle the mixture goes lean for a few seconds, then overly rich. If I go light on the throttle it will sometimes recover and then go back to being lean before kind of settling around stoich.
Any ideas on how to test fuel pressure? The pump is probably okay if it's actually delivering too much fuel, but maybe the regulator is getting stuck...? |
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12-06-2012, 01:02 PM
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#7 |
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1NZ-6spd
Drives: '05 6-Spd Vitz RS Join Date: Oct 2008
Location: Oshawa, Ontario, Canada
Posts: 2,967
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Yeah you just need to get a pressure gauge to go under the hood where the fuel line connects up to the rail. There's a quick release fitting there. I think you need a special tool to get it apart. That is another good possibility. Maybe dirt got through the in tank filter and is making the pressure reg slow.
Last edited by Bluevitz-rs; 12-06-2012 at 03:34 PM. |
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12-09-2012, 01:15 AM
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#8 |
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Drives: 08 Yaris Turbo; 06 tC Turbo Join Date: Jan 2010
Location: New Jersey
Posts: 875
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Ok, cracked open the ECM. Two things worth talking about.
First, pretty sure I pushed a cap off one of the pads lol. Oops. Easy enough to fix though.  This was a lot more noticeable... I don't think i knocked this out of place. Regardless, WHAT IS THIS. I've done quite a bit of work on electronics but never seen something like this before. (Bottom right corner, next to white square)  Otherwise, things look good... |
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12-09-2012, 01:26 AM
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#9 |
Drives: no-longer-boosted '10 Yaris Join Date: Nov 2009
Location: Angus, Ontario
Posts: 1,886
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oooooo.... that doesnt look good, im sure CTScott will be able to tell you what that is.
glad to see you got into your ECM and it sounds alot like the same issues i was having. If you learned anything from my thread, dont drive it too much. Also just a side note, check your blowby from the breather tube. 2 years boosted with no serious problems? congrats man and knock on wood. I like to think i would have made it 2 years if i didnt have my ECM issues. also when was the last time you did a tune up? fuel system cleaner and spark plugs? when my car was acting up i did a tune up and it got better so that was definatly a contributing factor
__________________
If it has boobs or wheels sooner or later your gonna have problems with it 
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12-09-2012, 01:32 AM
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#10 |
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Drives: 08 Yaris Turbo; 06 tC Turbo Join Date: Jan 2010
Location: New Jersey
Posts: 875
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Spark plugs are (were) only a little over a year old. I actually just bought seafoam for the first time.
Not driving at all until this is solved. Just watching the car idle makes me cringe and I don't want to leave it running long during troubleshooting lol... Definitely going to shoot CTScott a PM. How did that part look on your ECM (if you remember)? It sits between two traces but doesn't look like it should bridge them 
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12-09-2012, 01:39 AM
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#11 |
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Drives: no-longer-boosted '10 Yaris Join Date: Nov 2009
Location: Angus, Ontario
Posts: 1,886
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ill look through the pics in my phone and see if i caught that in one..... If i wasnt out of propane for my garage heater and it wasnt so damn cold in my garage id go and open up my new ECM lol.
__________________
If it has boobs or wheels sooner or later your gonna have problems with it
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12-09-2012, 01:43 AM
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#12 |
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Drives: 08 Yaris Turbo; 06 tC Turbo Join Date: Jan 2010
Location: New Jersey
Posts: 875
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Yeah, that whole winter thing. Hate it.
I'm praying this is related. The only thing I HAVEN'T checked is fuel pressure, which is going to be a pain. From what I can see it's going to have to be done out of the sender assembly because I don't have fittings for hookup in the engine bay... |
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12-09-2012, 01:45 AM
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#13 |
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Drives: no-longer-boosted '10 Yaris Join Date: Nov 2009
Location: Angus, Ontario
Posts: 1,886
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TaDa!
  
__________________
If it has boobs or wheels sooner or later your gonna have problems with it
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12-09-2012, 01:46 AM
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#14 |
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Drives: no-longer-boosted '10 Yaris Join Date: Nov 2009
Location: Angus, Ontario
Posts: 1,886
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use the white square label as a reference
__________________
If it has boobs or wheels sooner or later your gonna have problems with it
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12-09-2012, 01:50 AM
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#15 |
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Drives: 08 Yaris Turbo; 06 tC Turbo Join Date: Jan 2010
Location: New Jersey
Posts: 875
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Holy SHIT. That might just be the problem......
And by might be the problem, I mean DEFINITELY is the problem. You sir. THANK YOU. |
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12-09-2012, 01:54 AM
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#16 |
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Drives: no-longer-boosted '10 Yaris Join Date: Nov 2009
Location: Angus, Ontario
Posts: 1,886
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what happened to yours? lol, it doesnt look burnt.....
__________________
If it has boobs or wheels sooner or later your gonna have problems with it
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12-09-2012, 01:55 AM
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#17 |
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Drives: no-longer-boosted '10 Yaris Join Date: Nov 2009
Location: Angus, Ontario
Posts: 1,886
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y did we move back to your thread? my thread is only 7 pages, yours in 25......
__________________
If it has boobs or wheels sooner or later your gonna have problems with it
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12-09-2012, 01:59 AM
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#18 |
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Drives: 08 Yaris Turbo; 06 tC Turbo Join Date: Jan 2010
Location: New Jersey
Posts: 875
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I wish I knew. Hopefully it didn't happen while trying to open the ECM. There isn't really any marks around it though (the cap had a bunch).
Tomorrow I'll resolder the cap and throw the ECM back in the car and make sure I get the same result. Either way, looks like the ECM needs replacement lol. But hey, if I've finally found the problem I'm incredibly relieved. |
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