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02-23-2015, 09:13 AM | #19 |
It's the illusion you see
Drives: 07 Yaris Sedan Aero Join Date: Oct 2006
Location: Brossard, QC
Posts: 3,888
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My horn decided to stick when i was doing something in the car in the garage.. i was almost deaf by the time i was able to pop the hood, get a 10mm wrench and disconnect the battery.
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02-23-2015, 09:20 AM | #20 |
Drives: Toyota Yaris Sedan 09 STD Join Date: May 2009
Location: Puerto Rico
Posts: 1,227
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Bad crankshaft sensor?
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02-23-2015, 06:00 PM | #21 |
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Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008
Location: USA, CT
Posts: 13,460
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Not a bad thought. If the O.P. has access to a code reader, one would be stored if this is the case.
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02-23-2015, 07:38 PM | #22 |
Drives: 2009 yaris Join Date: Feb 2015
Location: oklahoma
Posts: 17
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no codes stored. I do have an rpm signal while cranking, however not sure where this particular car gets its rpm signal, be it the cam or crank sensor
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02-23-2015, 07:41 PM | #23 |
Drives: 2009 yaris Join Date: Feb 2015
Location: oklahoma
Posts: 17
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is it possible on this car that one sensor drives the coils while the other fires the injectors? However it should of set a code by now I'm sure.
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02-23-2015, 08:43 PM | #24 | |
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Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008
Location: USA, CT
Posts: 13,460
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Quote:
Does the CEL light when you turn the key to the on position?
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02-23-2015, 11:27 PM | #25 |
Just a shot in the dark, but did you try filling the tank? Alot of time the fuel level sensor is off by up to a quater tank. I've replaced dozens of them. Just worth a shot putting gas in it. Easy way to check injector pulse, take a led out of something and put it in the injector connector. See if it flashes. Simply a noid light.
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02-23-2015, 11:40 PM | #26 |
1NZ-6spd
Drives: '05 6-Spd Vitz RS Join Date: Oct 2008
Location: Oshawa, Ontario, Canada
Posts: 2,966
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And just to add, the fuel pump only operates while cranking until the engine has started.
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02-24-2015, 12:09 AM | #27 |
Drives: 2009 yaris Join Date: Feb 2015
Location: oklahoma
Posts: 17
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no injector pulse, that i have verified
interesting to know on the fuel pump, figured it would of had some sort of key on prime function yes i get a cel with key on |
02-24-2015, 06:20 AM | #28 | |
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Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008
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Quote:
The CEL on tells me that the ECM is at least partially functioning, but I still think that it is the problem.
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02-24-2015, 07:32 AM | #29 |
1NZ-6spd
Drives: '05 6-Spd Vitz RS Join Date: Oct 2008
Location: Oshawa, Ontario, Canada
Posts: 2,966
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My bad, it only operates while cranking on my echo until the engine starts.
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02-24-2015, 10:46 AM | #30 |
Drives: 2009 yaris Join Date: Feb 2015
Location: oklahoma
Posts: 17
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Same with this car. Pump only runs while cranking or when it's running on starting fluid. Never with just key on
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02-24-2015, 05:52 PM | #31 |
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Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008
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It should. If you listen by the rear of the car, you should hear the pump as soon as the key is in the ON position.
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02-25-2015, 06:10 AM | #32 |
Drives: 2009 Base Hatch 2 Dr Auto Join Date: Dec 2008
Location: nj
Posts: 4,790
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Definately the pump runs upon switching on the ignition. All the FI vehicles I ever owned did.
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02-25-2015, 08:04 AM | #33 |
1NZ-6spd
Drives: '05 6-Spd Vitz RS Join Date: Oct 2008
Location: Oshawa, Ontario, Canada
Posts: 2,966
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http://caphector.com/atoyota/techinf...g/fuelpump.pdf
The first paragraph explains how the fuel pump works on my car. I'll see if I can find one for the yaris. |
02-25-2015, 09:18 AM | #34 |
Drives: 06 Polar White 5dr, 13 Soul 4u Join Date: Oct 2008
Location: Georgetown, Ontario, Canada
Posts: 5,739
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It would be messy, but would it not be advantageous at this point to disconnect the fuel line from the fuel rail?
If gas immediately flows out, you know your line is at least pressurized which is good. After that, if fuel still flows out of the line with key on or cranking, even better. Eliminates pump as a suspect would it not? You know the coils are working as you can run the car by feeding fluid into the TB. That would leave you with an injector issue.
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02-25-2015, 06:06 PM | #35 | |
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Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008
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Quote:
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03-04-2015, 10:36 AM | #36 |
Drives: 2009 yaris Join Date: Feb 2015
Location: oklahoma
Posts: 17
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Ok I'm still ready to condemn the ecu. However, let me clarify a few things.
The back seat is out of the car and I have wired up an LED to monitor pump operation. Nothing with key on, only while cranking or running on starting fluid The new issue I noticed is AFTER you try to start the car and give up, there is a high pitched noise coming from the throttle body that only quits when you either unplug the throttle body or cycle the key. The battery isn't low either as I have been keeping a charger on it. Also, my final question, since this car does NOT have the immobilizer, if I get a used ecu that came out of a 09 automatic with no immobilizer does it still need to be programmed? |
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