Re: Car will not start.
 

Dale. Yes on MSD

Re: Car will not start.
 

Joe. We tried another big stuff box with no luck.

Re: Car will not start.
 

Check fuses in your EFI harness.

A friend had an issue with the car just shutting off no restart with Big Stuff, their issue was related to O2 sensor wiring shorting out to ground apparently also fed power to other functions don't remember if it was ignition or injectors.

Re: Car will not start.
 

Thanks Frank

Re: Car will not start.
 

One my cars wouldn't restart in the water box and we found the map sensor went bad. It was ACCEL EFI, but they all use map sensors regardless of make. Just a thought.





Bret Velde
2003 SS/LA

Re: Car will not start.
 

If you like call me 210-8873331. To many questions to ask.

Re: Car will not start.
 

If you have a wire from the points contact on the MSD ignition box to any retard module, disconnect it and watch for a spark indication on the main box. I still will have intermittent start failures. When I disconnect the grey wire - even if my MSD 8 is connected directly to the distributor with the starter saver technically out of the loop - the car will fire.
It's like the box gets confused if has wires connected to both it's points and magnetic outputs.

Re: Car will not start.
 

Now that I know it's an electronic fuel injection unit...........way too many things can be wrong. I would try to erase the programming and reprogram it from what was in it when it ran last. Don't assume the program is OK. I had an MSD ignition that developed a miss and the reprogramming fixed it. These things are just computers... Reboot and start over.
Dan

Re: Car will not start.
 

Thanks everyone for your help and information.

Re: Car will not start.
 

Unless I missed it you never said what you are using for a trigger input. flying magnet. distributor, multi tooth crank wheel. Does the bigstuff unit have an diagnostic LED on the box, and if so what happens when you crank it? Also are you using a cam sync for sequential EFI? After reading back through the posts I'm going to say you're running an MSD ignition box, hooked to the big stuff controller for the EFI side of things is this correct? And if so and you have no spark...look at the MSD part only for now, if the MSD has no spark then you probably aren't producing a tach signal for the big stuff system to work off of.