I replaced opti,plugs wires,coil,icm no spark not even at the coil checked the power to the harnesses and all is good checked ignition fuses all is ok no spark no start just cranks and cranks
Had my car running for about a week after I replaced my opti and wires and it ran good for 1 week and then just started randomly stalling and it got worse and worse it went from stalling to hard to start situations then it stoped starting in general so I replaced the coil and icm and still nothing...any ideas please leave them with me

thank you

 

Do this testing.

 

Is it possible my opti spark faild witch is why I get no spark at the coil....ny opti has coolant on it could this be a cause of my new part failing

 

I preformed the test and found that while testing the harness that gose to the opti (opti side out) I tested it and is at
A.and B tested 3.77v
and C tested 11.97
a and b should be at 5 and c should match my battery's. Voltage
where do I go from here?

 

Wet opti is a guaranteed way to fail the optical sensor contained within. Likely you'll have to replace it with a new unit. It's probably a good idea to fix the coolant leak up top whether it be the thermostat housing or water pump itself. It relatively cheap insurance to just replace the entire water pump.

 

Any other input in going to start turning wrenches on friday

 

Any Check Engline Light? Codes?

The coil is triggered by the optical pickup in the Optispark. If that is bad, then the coil won't fire. I would seriously consider when you have it taken apart to toss a new Optispark on there and see if it fires.

I seriously believe your wet Opti is the telltale sign here. While you dive into it. I would strongly recommend figuring out what is causing it to get wet in the first place or you'll be doing it all over again in about another week.

 

my guess is when my buddy was putting my optispark in about a month ago he put the water pump back on and then he was bleeding the cooling system and changed the thermostat, the location gm chose for this thing is incredibly retarded, I'll replace the opti and harness this weekend should I change my water pump gasket? Or just reuse it

 

Also there is no SES light on and I don't have or can find a scanner to work with this car

 

Do a search for "how to flash obi 1 codes on dash". You can jumper two of the pins in the ALDL connector and it will flash the codes on the dash. Not sure if it will work though if you aren't showing an SES light. It's easy enough to try though.

It's cheap enough insurance to just use a new WP gasket altogether.

 

If his light doesn't light up, it is going to be hard to see a code.

He can't do it, anyway, because he has a 1995. The last year you could flash codes on an f-body was 1993.

 

Ok I had a good tech check the opti, He said nothing comes out of the unit testing it at the opti harness so I got my new one today with a new wire harness
let the fun begin

 

Let us know what happens

 

One time I had a female pin in the opti harness get pushed too deep in the weatherpak connector and the harness would probe good but the opti wasn't making contact. Took two days to find....................................

 

The connecter of the opti harness that plugged into the opti was cracked so it never had a tight connection witch in my case I think eventually it wiggled loose and it fried my brand new opti (Optispazzm)

 

I can't wait to post back and hopefully tell everybody the war is ended, I got the car ripped apart and I have my brand new opti now I just have to wait for my new harness to come in later this week! In the mean time I think going going to clean up some grounds while its on the lift