1jz swap will not do anything

[OneJSupra]

told ya so

 

[ALASupra]

don't say that man. i'm really hopping its the map instead ecu. did forget to mention that its running 10.0 AFR.

 

[ALASupra]

Oh yea and I tried unplugging the map while it was running and there was no change.

 

[mk3tattoos]

that sounds like the map sensor then, when you pull the plug on the map your engine will die or idle like total crap.

check the volts on it just to be sure! the green wire is signal to.

 

[ALASupra]

well I got some bad weather heading my way so don't look like I will be doing much work to it today. Any suggestions on a map sensor, i really don't want to buy a used one.

 

[mk3tattoos]

get a 2jz map sensor......im sure there in better shape then most 1jz map sensors that could be 20yrs old and have been sitting for along time.

 

[ALASupra]

yea thats what i've been looking at. all forums say they are interchangeable the only problem is that its a $270 part.

 

[ALASupra]

Well guys Jay just came over with another MAP and it still doesn't work. So we gonna try to swap the ECU i guess. Yea OneJ you might be right.

 

[ALASupra]

No its not the ECU either.check engine light still on but now just code 31- air flow meter signal. I'm about to check voltage at the MAP. will post when done. thanks again guys.

 

[ALASupra]

Find which one is the signal, and post the voltage readings:
Key on, engine off,
Engine running,
And post the actual running vacuum reading.

Key on engine off- 2.63v
engine running- 1.64v
vac reading at idle- .47 - .49

thanks again man.

 

[mkiiichip]

Is that vacuum reading bar?
If so, thats way low, check cam timing.
I am used to seeing vacuum readings in inhg, and normal is 19-20. You are around 14. According to this,
http://www.sensorsone.co.uk/pressure-units-conversion/mh2o-to-fth2o-bar-psi-inhg.html

 

[ALASupra]

yes that vacuum reading is in bar, but according to that website .47 bar is 6.8 psi, and .49 bar is 7.1 psi. not for sure if thats a good thing or not. But not to forget it did this on me the first day I had the car, but after leaving the battery off for almost a week it ran fine for 4 or 5 days and then started again. As for engine codes:

**31 Air Flow Meter Signal** (i guess this is for the MAP sensor, since it doesn't have an AFM please correct me if i'm wrong)


Diagnosis

* (7M-GE) Open circuit in VC signal or short circuit between VS and E2 when idle contacts are closed.
* (7M-GTE) Open or short circuit in air flow meter signal.

Trouble Area

* Air flow meter circuit---what is this where is it at and how do i check it???
* Air flow meter---??????
* ECU-----tried swapping this out for another didn't work

This is all off of Cygnus X1.

 

[mk3tattoos]

can you put up a video of what it is doing

 

[ALASupra]

Although when i went out to take these videos it wasn't acting as bad. It would rev a little higher but start spitting and backfire at 4k. and the vacuum is at .57 and .58 bar my bad.

[video=youtube;ykPMmtZwhJg]http://www.youtube.com/watch?v=ykPMmtZwhJg[/video]

[video=youtube;IE9FrD7CDBw]http://www.youtube.com/watch?v=IE9FrD7CDBw[/video]

sorry for the crappy video feed my camera is messed up had to use my phone.

 

[bombinuass]

edit-sorry im a fuckin idiot

 

[mk3tattoos]

why is your gas gauge to the right of your speedometer?

what????/ thats were the belong, lol

it seemed to rev fine to me, were you trying to go above 4k. idle seemed to be kinda low, most are around 700 rpm's.

 

[ALASupra]

yes i was trying to go over 4k, it just bogs spits backfires like it won't go any higher. and yes it isn't idling like normal, it is low.

---------- Post added at 06:50 PM ---------- Previous post was at 06:49 PM ----------

why is your gas gauge to the right of your speedometer?

where is yours???

 

[bombinuass]

yes i was trying to go over 4k, it just bogs spits backfires like it won't go any higher. and yes it isn't idling like normal, it is low.

---------- Post added at 06:50 PM ---------- Previous post was at 06:49 PM ----------



where is yours???

edited- im a drunken idiot. lol

---------- Post added at 07:58 PM ---------- Previous post was at 07:58 PM ----------

some dumb reason i thought it was to the left. i have no idea why i thought that. i KNEW where it was. just watching your vid it seemd outta palce idk y

 

[ALASupra]

ok so i'm gonna buy a new map. when i tested the sensor with a vacuum pump i wouldn't hold vac like the diaphragm is broken. so we will see what happens then.

 

[suprahero]

Good luck Dylan. Let me know if I can help you.