on my stim when i do rpm it jumps around and drops to zero at about 4200rpm

i have a ms1 v3.0

everything else is fine i need urgent help on this

 

what do you mean when you "do rpm"

With the MS set up for the rx7, you really shouldn't be able to get rpms on the stim at all.

Ken

 

when i turn the pot if i am in msns mode for ignition for testing it all up it goes up to 4000 something and then dies wont go over i have the latest stim thing

any suggestions ?

 

What are your zero-crossing and hysteresis pots set to?

 

im not sure i have played with them to get it to rev to 4000 on the stim if i have the bowlin grippo my end down which way should i turn them ? could you run me through what i should check

 

Turn them fully counterclockwise.

Did you jumper the MS for VR input?

 

which jumper is this does it need to be done or not

 

According to the megamanual:

For the VR sensor:

* Jumper VRIN to TACHSELECT on the bottom side of the PCB (near the DB37, opposite the heat sink.)
* Jumper TSEL to VROUT (Or VROUTINV if you want the VR input to be inverted) on the bottom side of the PCB, near the center.

 

done done and done to no avail on the TSEL what should i have it on for a cut cas with fc coil L and 2x Trailing 3 bim024


thanks

the rpm gets to about 3400 then cuts out onmega tune when on the stimulator still not car tested

 

TSEL should be connected to VROUTINV for an MS1 chip.

Try setting everything up properly for the rotary, and then using stim-for-wheel with a setting of "2" and let me know what happens.

Ken

 

hi sorry i am not familiar with stim for wheel links please ? thanks again muythaibxr

 

Stim for wheel is a setting in the "Spark" menu. Just look there for it.

Ken

 

how does it work i mean sorry for the ignorance i just know nothing about this option

 

It takes a signal from a normal stim, and generates wasted-spark/rotary outputs (or whatever you have set up in your settings).

It basically allows testing of spark for wheel-decoder users without simulating a wheel.

 

okay did this every thing worked up until 3500 and just cuts out to 0 until i back the rpm stim back all constants are correct and stuff ?

 

this is still an issue ?

 

Which stimulator do you have?

Ken

 

I cut my ignition input wire from the stim and wired a cas straight in, then put the power drill on the cas... thats one way to test.. lol.

 

v2.2 m8 i will try get the stim going first and if it fails i will try my cas

 

hrmm, on a 2.2 board, the only thing it comes with is coil-negative input.

If that's not working with the stim, then there's probably something wrong with the way that circuit was built.

I'd suggest going through that circuit and checking it against the instructions on www.megasquirt.info for the 2.2 board.

Ken

 

done that 3 times everything is mint it will only rev to 3500 on the stim so it is getting in put but thats it i have changed the rpm pot to no sucess

 

could it be i may have used a 10k pot for the rpm i will have to check this tonight its ment to be 50k aint it what do yuo think ken

 

So you're saying you used the wrong type of pot on the stim then?

Ken

 

im not sure i will check when i get home would it do this if there is a 10k pot there instead of a 50k pot ? i will double check it tonight eh

 

I don't know for sure what it'd do, but if you're using the wrong pot I wouldn't expect it to work right.

Ken