i have a ms1 2.2 with the zeal db and a jimstim (2.0 i think) when i have them hooked up megatune is not reading rpms. i have the ms set according to arons web site and im using the CAS with jumpers to the screw termanels on the stim, ne+ to pin 24 and g+ to pin31 and the neg wires through db 15 connecter to the neg input on the zeal board.
should the - wires be conected to the zeals ground where it is grounded back to the main board?

the three LEDs on the ms also stay on.
when i power on the ms/stim the fpump and fidle LEDs come on for about a sec then go off and the inj2 and inj1 Leds flash verry fast

 

Doe... Tunerstudio is what i'm using and i just loaded ms1 extra code last week

do i need to have D8 installed (its not) i thought i read that for the zeal board it should not be installed but in troubleshooting it sed i may need to jumper it.

 

Any one use the 2.2 board?

 

On a V2.2 board, remove D5, R10, D8, C12, U4, C11, and R11.

Please read this...

http://www.diyautotune.com/tech_arti...d_assembly.htm

 

And you have loaded the MSnSE firmware, right?

 

The zeal board was not getting 5v, I fixed that and its working bit the timing acts like its easy off, I checked the wiring, the cas is correct and at tdc. All the settings are set as aaron cakes web site, I got the car to start a couple times but it was missing realy bad, I just reflashed the firmwere, hopeing that helps, I'll try it tonight. I can't find any thing wrong with it....

 

029y4

 

Don't forget the two grounds need to land on the daughter card, the positives are closest to vr1/2 and the hole not labeled close to them are grounds for each sensor, also short the two holes closest to the chip on the switch side in the center of the board. You could just have a noisy signal.

 

This might help

 

yes i did this, it still didn't start, when cranking it acts like its going to start but just wont cach, its a half bridge 12a with an fc intake and fuel and ignition set up on it ( fc cas and stock cas wires ron to the ms, fc coils, fc intake,tb and turbo) i dont know what to check next.











maby you can see something im missing? being a 12a it should still start with aarons settings correct??

 

OK, so you have fuel and spark at this point.

Didn't know it was a half bridge. ADD MORE FUEL! It takes a LOT of fuel to start and idle a bridgeport, about twice what it takes for stock/street ports.

 

The yellow wire you have on jp1 should be on pin 8 it looks like you have it on pin 1, pin 1 is the square hole

 

ok i was thinking being a 12a not 13b to pull fuel out, i did not relise that a 1/2 bridge needs mor fuel to start, i get back in town this weekend and ill do that. Req. fuel is at 9.5 i think, should i try setting it about 18?


yes the pix where a few weeks ago, i fixed it and moved the wire on u4 to pin 5 ( i think, one pin to the left of where it is in the pic.) that got the rpm working. now im just trying to get the car to start and run.

thank you for your help, eney thing els you see wrong or think i need to try please let me know.


ill post my msq later,

 

On VROUT2 what is that resistor for?

 

The directions I was following said to use a1k resistor between vrout2 and the pin on u1, could that be a problem?

 

Can you send me a link to the directions you used? If your showing rpm in megatune and the 3 ignition LED lights are blinking it may not affect anything.

I know with some people when it comes to the megasquirt unit people use all sorts of tricks and never tell anyone.

 

I'll dig it up for you when I get back in town this weekend

 

Ok, thank you. I just built this same setup for a friend and I followed the instructions in the link I posted from diyautotune and it worked like a charm. I also bench test with a stock CAS and I hook up LED lights to my injector outputs and coil pack outputs. I visually monitor megatune and the rate the LEDs blink with the rpm im spinning the CAS at.

I did have to mod the large port, If you look at the V3 pcb outputs there are 4 spare outputs that the V2.2 pcb don't have. All they are on the V2.2 pcb is grounds. So I cut the black holder apart, snip the leads that go from the board to the pins, ground out the 4 pins coming from the pcb to the other grounds, epoxy the 4 pins from falling out since what held them in place is what i removed and i got my 4 spare pins back. This is what i use to run the 2 grounds from the CAS through along with fan controller and boost controller.

 

Lol, I just cut a hole in the case and added an extra connector for the cas wires, maby that resistor is throwing the timing off a bit, hmmm

 

Or you could do that... I tend to do everything the hard way...

 

Just set it to 10. For MS1, Req_Fuel is non-critical. With stock FC (NA?) injectors, you'll be idling at about 2.5-3MS of injector time. Cranking PWs will be around 10MS.

Bridgeports need a lot of fuel at low RPMs.

 

req. fuel is set at 10. cranking was at 10ms and i set it at 15, also tried 2nd priming pulse on and it just cranks, i found a fuel leak from under the intake so ill be pulling the intake tonight to fix that. also to check that the injectors are working still. im using tii low z 550s for the pri. and lowz 920cc sec. with a stock fc resistor pack.

ill report back after fixing this stuff.

 

ok attached is my msq ( if i did it correctly) fuel leak is fixed and the injectors are working correctly,s
so i discoveredi have spark issues, im using a fc leading coil and i only get spark sometimes,sometimes i get good spark on only one leading plug and a verry verry faint spark on the other, somtimes no spark on at all or good sparkon both. i swaped the coil for an extra and the same results, i did not find a a problem in the wiring,

only sparking sometimes and i would think its a short in the wiring but sparking on one plug and i dont know what that would be, sometimes l1 sometimes l2

maby i have something set wrong, any ideas

 

and