Toyota 24 tooth wheel

[BNZ]

At first i tried Tooth #1 angle is set to 20deg , it doest run.

...meaning no rpm at all,or a lot of sync loss but getting some signals ?

[katok]

BNZ,
I'm getting an rpm signal, i think its the loss sync issue when tooth#1 is set to 20deg.

[jsmcortina]

There is no reason to lose sync depending on the tooth#1 angle. The sync code doesn't use the tooth#1 angle.

James

[katok]

thanks James for the info and now I know. My engine is not running when tooth#1
set to 20 deg because the ignition coil is not firing at the right cylinder or not firing at Btdc. Is that correct? When tooth#1 set at 315deg,it runs great and smooth .I'm using wasted spark ignition at planning try the full sequential .

[muythaibxr]

Katok: With that angle, you may be triggering off the wrong edge of your input capture for your hardware setup and not actually triggering off of G2 unless Toyota phased your engine drastically different from mine.

If you need an angle that high, I would expect you to need an angle of 380 or so, and with G2 angles between 15 and 45 give or take a bit would be expected to work.

Ken

[katok]

Hi Ken,
I hooked a timing gun on my engine to check the timing.
when the tooth#1 angle is set to 325deg, the timing mark on the pulleys is advance .
when the tooth#1 angle is set to 305deg, the timing mark on the pulleys is delay.
the perfect setting for tooth#1 angle is 315 deg, the reading on the tunerstudio spark advance display is same on the timing mark on the pulley.

I test drive my car using that set-up and it was running fine and experience no miss fire .also I have no issue on starting the engine, it start quickly

Is it okay to used my current set-up?

[jsmcortina]

If it works and timing matches TunerStudio under all conditions then you are good to go.

Perhaps the CAS has been re-installed out of phase from standard (if that's possible.)

James

[muythaibxr]

That is not possible on my engine but may be on some.

Ken

[muythaibxr]

You could also have G1 and G2 backwards or something.

Ken

[J-RIVE]

Hi everyone,I'm using the DIYPNP on a supra 7mgte with the stock setup seems to me that I'm having a sync problem the rpm in tuner studio jumps to about 300 to 0 while the engine is cranking.

Ne to VR+
Ge to VR-
G2 to VR2 +

also not sure if my setup under trigger wheel settings is correct

dual wheel
24 teeth
0 missing
50 deg tooth #1 angle
cam
rising
crank

thanks for your help

[katok]

If it works and timing matches TunerStudio under all conditions then you are good to go.

Perhaps the CAS has been re-installed out of phase from standard (if that's possible.)

James

You are correct James. I have re-installed my CAS out of phase from standard .
The CAS can be installed out of phase in 4age 16v but in 4age 20v its not possible to install it out of phase.
I pulled out my CAS today to replace my leaking oil seal , but when I re-installed it and ensuring that it was on TDC , the engine barely run and the timing is too far on the mark.
I change the "tooth#1 angle to 15deg" and it was running smooth . The timing light reading matches in TunerStudio under all conditions

[BNZ]

I've managed to start my setup 24+1 stock 3SGTE gen 1 engine and I've end-up with tooth#1 angle to 10deg matched with timing light.
About sync loss,i got sync loss during spark cut (rev limiter/launch,etc), is that normal ? It wont be a big problem but the ASE keeps coming into action !
I am driving the stock celica(denso) igniter

[muythaibxr]

That's probably noise from the misfires... did you shield the VR wire? How are your power/grounds wired?

Ken

[BNZ]

all the wirings are the OEM ones (car's harness wit 0 modifications,no cutting no nothing).
I've build a short (20cm) loom from the DIYBOB Breakout Adapter - Nippondenso 52 pin to the DB37 and the location is under the dashboard,so it's away from noise interference like the spark plugs.
I've used the grounds in the OEM harness relying on a basis that works with the stock ECU

Edit : Sorry for the huge images...i've hoped they where to be hobnailed

Celica_Altrac_3SGTE_ECU_Wiring.JPG

Celica BNZ Wiring_complete.GIF

...

[BNZ]

Comming back to it,it seems noise is an issue but it's not Spark cut dependent.
I've tried to play with the noise fileter but only with the "Tach itrerupt masking" and the results are as following :

Primary Tach
Tach interrupt masking OFF
Secundary Tach
Tach interrupt masking OFF

=> Engine gives a trye to start but dies in the next step while going to WUE and ASE

TEST 1
Primary Tach
Tach interrupt masking ON
Time : 0.3
Percentage : 10
Secundary Tach
Tach interrupt masking ON
Time : 0.1
Percentage : 10
=>Constant Sync loss at 1500rpm

TEST2
Primary Tach
Tach interrupt masking ON
Time : 0.5
Percentage : 10
Secundary Tach
Tach interrupt masking ON
Time : 0.1
Percentage : 10
=>Constant Sync loss at ~2500rpm

TEST3
Primary Tach
Tach interrupt masking ON
Time : 1.0
Percentage : 10
Secundary Tach
Tach interrupt masking ON
Time : 0.5
Percentage : 10
=>Constant Sync loss at ~3800rpm

What's that about ?

P.S. I wanted to take a composite log to a file but i don't understand yet why the file does not apear in the directory i set it when checking the box

[muythaibxr]

Do you have pin 14 on the 2nd trig lm1815 grounded on the zeal board? There are a couple of small jumper holes for that.

Ken

[BNZ]

I don't undestand wich pin 14 should be grounded,but if you refer to the jumper next to U2 in the Zeal acording to the installing guide "For RX-7s and most other applications, we have found that the second signal conditioner works better with the ground jumper installed in the two holes next to U2. Install a length of snipped resistor lead to bridge these holes, and solder into place." yes, y've bridged it !

If you asking about the G- wire,i have brought it to GND on the proto area on the main board not on Zeal.

Here are 2 pitures with the internal wiring of the Zeal.

InsideWiring_Back.JPG

InsideWiring_Front.JPG

[BNZ]

did some trial & error today with the noise filter and ended up with this settings :
Primary Tach
Tach interrupt masking ON
Time : 0.5
Percentage : 30
Secundary Tach
Tach interrupt masking ON
Time : 1.2
Percentage : 30
=>Engine revs to 7000+ (no load) but still some sync loss now and then,not that bad but still...

anyway filtering the signal is not as good as curing the actual problem fiscally,so what should i do ?

[muythaibxr]

most likely there is a fault in your harness. I'd start by cleaning up the grounds.

The stock harness also had a sensor ground and power grounds... what did you ground where?

Ken

[BNZ]

2'nd picture 5 post above.
Power grounds E01 E02 and E1 to pins 7 to 11 and 18
Sensor grounds E2 and E22 to pin 19

Also talked with Phil (extraefi) trough mail and recommended to try to move back NE to the main board's VR circuit using his diagram (different resistor values and capacitors) posted here : http://www.msextra.com/doc/ms2extra/Ign ... _IN_V3.GIF instead using Zeal for both ! Will try that also tomorrow.