Tach Signal

[Sp1kE]

I have a 1990.

I finally got my part to fix my megasquirt,
Before that my stock computer blew smoke, but I could still start it up and move it.

I come home. wire up my megasquirt again.

Go to start the car and myy tach is not showing up.

It wont show up on the gauge, or on the MS.

I swapped out 2 coil packs, and a cam angle sensor.

Any Ideas??


Thanks,

Mike

 

[pj91gsx]

The coil pack and CAS dont have anything do to with the tach. Look for loose wires on the transistor.

 

[Sp1kE]

90's get the tach signal from the coil pack, thats why i swapped it out.

But i'll check out the PT

Thanks

 

[Sp1kE]

no dice
it blips a little when I first crank but theres nothing

 

[Sp1kE]

Ok I realized I have no spark,
But after I stop cranking, then it sparks.

Maybe that will help for diagnosing?

 

[GooeyGus]

does the check engine light come on when you turn the key to the on position? Does it go off after a few seconds or stay on?

If it doesn't come on at all, you have an ECU issue.\


EDIT: UUGHHH.... I have the worst habit of searching through old posts and then leaving my computer. I come back and reply to the thread, not realizing that it is a couple years old. Sorry guys!