just installed a accel opti-spark. ISSUES!!
Launching!
Joined: Feb 2008
Posts: 235
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http://shbox.com/1/4th_gen_tech2.html#opti_test
^ There's the testing procedure. FWIW...I like to see if the car will start up briefly BEFORE putting the water pump back on after a new opti is installed (You might get a dud
); you don't want to have to do it twice.
^ There's the testing procedure. FWIW...I like to see if the car will start up briefly BEFORE putting the water pump back on after a new opti is installed (You might get a dud
); you don't want to have to do it twice.Also, what brand of opti is the preferred one these days? I heard new old stock is non-existent and the delcos are now made in china(if that's true). There's the aip ones and several other brands including the msd one that is apparently junk. Thoughts?
I did test a and d. I don't think we were seeing voltage at b when cranking. If I'm not seeing voltage at b does it mean the opti then?
Also, what brand of opti is the preferred one these days? I heard new old stock is non-existent and the delcos are now made in china(if that's true). There's the aip ones and several other brands including the msd one that is apparently junk. Thoughts?
Also, what brand of opti is the preferred one these days? I heard new old stock is non-existent and the delcos are now made in china(if that's true). There's the aip ones and several other brands including the msd one that is apparently junk. Thoughts?
The MSD one is not junk, I do think they have had some failures/issues as with any optispark but they do stand behind it with a warranty....I just put one on last weekend and it's working great and has my car running smooth. AC delco parts have a 1 year warranty if you buy them from a certified part dealer (like a dealership) even if you can't get a N.O.S. opti and have to get a remanufactured one. I would either go with AC delco or MSD....MSD will rebuild it for $137 or less many years after the warranty expires (ask GM to do that
)....something to consider as well!Just steer clear of auto zone or other cheap-o optis!
Thread Starter
Teching In
Joined: Jun 2014
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LT1 not starting My 95 LT1 quit on me about a week ago, I ordered OBD1 download with cable which just came in. I have no codes in the system but the car will not start. There are no electrical issues, the VATS is showing ok. The engine turns over but not even an attempt to start. Any thoughts?
My 95 LT1 quit on me about a week ago, I ordered OBD1 download with cable which just came in. I have no codes in the system but the car will not start. There are no electrical issues, the VATS is showing ok. The engine turns over but not even an attempt to start. Any thoughts?
....but assured me I could return it after "testing" it on my car if it did't work since they are too incompetent to do so there like they are supposed to...BINGO! It starts right up. There's opti troubleshooting steps here too: http://shbox.com/1/4th_gen_tech2.htmlIs it an original opti? If not what brand? How many miles? You need to check fuel pressure too with a gauge to eliminate that...if the opti is completely dead, it won't even fire the injectors.
^Ah ok...didn't re-read the whole thread! Most likely a coil/ICM or fuel pump issue is my guess still. Or he's got my luck with dud optisparks! 
OP did you locktite the opti rotor? Hopefully the screws didn't back out....if you hear rattling from your optispark when you take it off, you have found the issue!
OP did you locktite the opti rotor? Hopefully the screws didn't back out....if you hear rattling from your optispark when you take it off, you have found the issue! 
