cruzin94

iTrader: (2)

I just replaced my opti, coil and i started the car up runs like **** its sounds like i have a massive cam and it dosent want to run and just dies i repalced the opti which only goes on one way so i dont think i messed that up and i replaced my coil but i made my own wire from the opti to the coil so i dont no if that could be it, but i NEED SOME HELP PLEASE

kinglt-1

iTrader: (26)

Did you make sure to put the pin thats on the back of the opti back in the hole on the cam gear? Sounds like it's mis aligned, causing your timing to be way off!

kinglt-1

iTrader: (26)

Im almost positive that whats wrong!!

cruzin94

iTrader: (2)

what are u talkin about the pin on back of the opti....i slid it in that lil spline shaft thing if there somthing else im missin ????

383lt1impala

iTrader: (33)

do u have the maf connected and water in the system and is everything else connected??

cruzin94

iTrader: (2)

yea i have every thing i connected im pretty sure i did take out my AIR pump so i took the fuse out, but am i right is there only one way the opti goes on ?

porksoda

iTrader: (39)

It's only supposed to go on one way but wth a little bit of force you can put it on wrong by misaligning the splines. Check your wires. Where did you get your opti from and what kind is it?

kinglt-1

iTrader: (26)

Im sorry I meant to say spline! I think you new what I was saying though. Anyways, I put mine on wrong the first time I changed the opti and had the same problem you are describing. Took it back off, put it back on carefully and it was fine. Also it was the only thing you changed and if it didnt act like that before, then that pretty much answers you question. Maybe I'm wrong...

cruzin94

iTrader: (2)

no i took my time with a buddy and we put it on till it just fell in to place and it did act liek this befor and i thought it was my opti but now i dont no ...and i also got my opti on here from a member it was brand new but now i dont no if i made a mistake or not...are there any other opions on what is wrong with my car

kinglt-1

iTrader: (26)

Brand new gm unit, msd, or what. If you bought anything other than these two options you made a mistake. Also I just fixed my 92 gmc truck, it had a bad pick-up coil on the distributor. So I yanked it and fixed the pick up coil and put the distributor back in and fired it up. It was running like it had a cam with a big nasty lope and would die. Realizing I put the distributor in wrong, I pulled the distributor back out. Then I turn the motor over to find tdc on cyl.1. Put the distributor back in with the rotor pointing towards one, and it runs like new again. Point being that it easy to put the opti or a distributor in wrong, even if you have done it a few times. So Im going to say opti is installed wrong or is bad. Also is your car throwing any codes?

porksoda

iTrader: (39)

Check all your plug wires and make sure they aren't cut or arcing, get your ignition control module and coil tested at a parts store for free. Start narrowing it down because it sound like a miss to me.

kinglt-1

iTrader: (26)

I just looked in my hanes manual and 95 later have pin drive opti(vented), thats why I refered to as a pin. You have a spline type opti(non-vented). I think the splined ones are easier to install incorrectly. Someone verify this!

cruzin94

iTrader: (2)

i followed this diagram http://shbox.com/1/93-94_opti.jpg so i think the opti is in right cuz i messed with it until it about fell in to place and also i have a brand new coil but i made the wire to it out of an old spark plug wire so i have a spark plug wire boot on where it connects to the coil so i dont no if that could be it ..... and im not throwing a check engine light ...and i took off my AIR so i took out the pump and i took the fuse out for it ...im goin to check all my wires make sure there on right then after that i dont no what to do ..any thoughts? I REALLY need some help

porksoda

iTrader: (39)

I still think it has to do with the wires as long as the opti that you bought really was new and you didn't get ripped off.

Make sure they are all routed to the correct plug and spot on the opti, no cuts or tears either. Start the car at night and look at all your plugs and wires and see if you can see them arcing. It will look like little sparks coming from the wire.

cruzin94

iTrader: (2)

yea im plannin on takin all the wires off inspecting them then puttin them back on ...but if that dosent work then i dont no what...im kinda worried about the opti i bought cuz the kid just sent me the opti with out the org. box but it looked exactly like the stock one so idk

cruzin94

iTrader: (2)

guys i really need some help i just took off all my wire checked them and put them back on and it still dosent want to run ...... is it possible that its not gettin full signal to the coil? or what else could it be ???

Formula350

iTrader: (3)

I don't know if this matters on an Opti or not, but SBC firing order is 18436572. Maybe your Ignition Control Module (that thing with the heatsink) took a crap on you.

porksoda

iTrader: (39)

He can get the ICM and the coil tested at almost any auto parts store. If their both good I'll bet the opti was junk, like maybe an ebay one the guy decided he didn't want.

SLawson86

iTrader: (8)

not really, if you actually LOOK when you change them, either is pretty dummy proof. alot of people are aggravated when they get in there, and just kind of stick it on. it only goes on one way easily, and i slightly rotate it on the block before i bolt it down. you can feel the opti and block scraping together without having to push it against it. the splined style has a flat spot that lines up.

(to the poster) first off i would verify that you have the firing order correct. it is VERY easy to cross up wires on an LT1 due to the fact you cant really see the wires to the plugs, you kind of have to feel. going with the others, i would check coil next, icm usually is a last resort check for me. i have usually narrowed the misfires to the coil, opti, or burned wires.

cruzin94

iTrader: (2)

Whats my ignition control module and where is it located .... and i did pull the wires and put them back on so i no its not them and now my car wont even start i checked the wires and tryed to start it again and it wouldnt and it would only slighty run if i hold my gas pedal all the way down but it might only run a second.... when i first got it all back togeather it would run for a couple seconds if i would mess with the gas ....sound like anything?