Big problems with my lt1 optispark
Thread Starter
Registered User
Joined: Mar 2011
Posts: 16
Likes: 0
From: peoria,az
Big problems with my lt1 optispark hello i have had some big problems with the optispark iv gone through 2 gm oem optisparks in the past month idk y it keeps eaten them up... is it true if u go past 6000rpm they just take a **** or is it the trubo just working it to hard plz get back to me with some info.
Last edited by fa-Q; Mar 28, 2011 at 11:22 AM.
I still have a GM opti and have had this one for almost 2 years now. I shift at 6300 rpm's and I have had no problems....so no, it is not true.
This sounds like there is another issue that is burning up your opti.
This sounds like there is another issue that is burning up your opti.
I burned one up on my new motor but I bought a new gm one and put my msd cap and rotor on and haveht had problems. I have about 1k miles on my new opti and I've spun my motor to 7k a few timesand 6500 quite a few times with no problems yet. So far so good (fingers crossed)
Staging Lane
Joined: Feb 2010
Posts: 72
Likes: 0
From: ATX
Do you have a cam in the car? If you do, check the dow length, also, what coil are you running? Have you checked you ignition control module? Did you loctite the T9 screws inside the opti holding the rotor on?
Thread Starter
Registered User
Joined: Mar 2011
Posts: 16
Likes: 0
From: peoria,az
i do have a cam its a custom ground trubo cam and i didnt check the controle module nore lock tight the t9'S
Trending Topics
What kind of bottom end do you have?? If you are gonna spin to 7K I hope you are forged lmao.
My rev limiter got moved to 6800, but my Mallory Box controls the actual Rev Limiter that I use and it is set at 6500.
You need to make sure on the next install that the Dowel Pin on your cam is the correct length, make sure you line the opti up correctly, Red or Blue Locktite the Rotor Screws on when you put the new rotor on, silicone the Opti Cap when you install to prevent water from getting inside. The stock coil should be fine for your application and this doesnt sound like an ICM issue.
My rev limiter got moved to 6800, but my Mallory Box controls the actual Rev Limiter that I use and it is set at 6500.
You need to make sure on the next install that the Dowel Pin on your cam is the correct length, make sure you line the opti up correctly, Red or Blue Locktite the Rotor Screws on when you put the new rotor on, silicone the Opti Cap when you install to prevent water from getting inside. The stock coil should be fine for your application and this doesnt sound like an ICM issue.
Thread Starter
Registered User
Joined: Mar 2011
Posts: 16
Likes: 0
From: peoria,az
What kind of bottom end do you have?? If you are gonna spin to 7K I hope you are forged lmao.
My rev limiter got moved to 6800, but my Mallory Box controls the actual Rev Limiter that I use and it is set at 6500.
You need to make sure on the next install that the Dowel Pin on your cam is the correct length, make sure you line the opti up correctly, Red or Blue Locktite the Rotor Screws on when you put the new rotor on, silicone the Opti Cap when you install to prevent water from getting inside. The stock coil should be fine for your application and this doesnt sound like an ICM issue.
My rev limiter got moved to 6800, but my Mallory Box controls the actual Rev Limiter that I use and it is set at 6500.
You need to make sure on the next install that the Dowel Pin on your cam is the correct length, make sure you line the opti up correctly, Red or Blue Locktite the Rotor Screws on when you put the new rotor on, silicone the Opti Cap when you install to prevent water from getting inside. The stock coil should be fine for your application and this doesnt sound like an ICM issue.
Last edited by fa-Q; Mar 29, 2011 at 11:23 AM.
The dowel pin is what TURNS your optispark. It seats into the back of the opti through the timing pulley and it actually turns the rotor. If the dowel pin is not long enough, it may slip out of the groove in the back of the opti and throw your ignition timing WAY off. Also it could tear up the opti and cause it to fail. If your dowel pin is too long, it wont let the opti seat up like it is supposed to and that could do damage as well.
No to disrespect you or anything, but have you actually TESTED the opti's to make sure that it in fact WAS the opti that failed?? You may have another issue in there that is causing it to cut out or have issues and the opti may not be the culprite at all!
No to disrespect you or anything, but have you actually TESTED the opti's to make sure that it in fact WAS the opti that failed?? You may have another issue in there that is causing it to cut out or have issues and the opti may not be the culprite at all!
Thread Starter
Registered User
Joined: Mar 2011
Posts: 16
Likes: 0
From: peoria,az
The dowel pin is what TURNS your optispark. It seats into the back of the opti through the timing pulley and it actually turns the rotor. If the dowel pin is not long enough, it may slip out of the groove in the back of the opti and throw your ignition timing WAY off. Also it could tear up the opti and cause it to fail. If your dowel pin is too long, it wont let the opti seat up like it is supposed to and that could do damage as well.
No to disrespect you or anything, but have you actually TESTED the opti's to make sure that it in fact WAS the opti that failed?? You may have another issue in there that is causing it to cut out or have issues and the opti may not be the culprite at all!
No to disrespect you or anything, but have you actually TESTED the opti's to make sure that it in fact WAS the opti that failed?? You may have another issue in there that is causing it to cut out or have issues and the opti may not be the culprite at all!
Registered User
Joined: May 2011
Posts: 1
Likes: 0
Intermittent DTC 36 optispark hi res failure If DTC 36, hi res failure, and CEL are set, does that mean opti is done for or about to crap out?
At the first event the car stumbled, set code and continued running in stop and go traffic. Second event the car stalled, luckily not on freeway at 70 mph! After both events, car starts fine, CEL gone, and runs fine, and 36 becomes a history code which I have cleared.
The two events happened twice, about 300 miles apart. The opti was replaced about 10 k ago, it was a top street performance unit. Harness was also new and vent/vacuum appears to be operating properly. So bottom line, is the opti going for sure? Thanks Roger
At the first event the car stumbled, set code and continued running in stop and go traffic. Second event the car stalled, luckily not on freeway at 70 mph! After both events, car starts fine, CEL gone, and runs fine, and 36 becomes a history code which I have cleared.
The two events happened twice, about 300 miles apart. The opti was replaced about 10 k ago, it was a top street performance unit. Harness was also new and vent/vacuum appears to be operating properly. So bottom line, is the opti going for sure? Thanks Roger
Teching In
Joined: Aug 2008
Posts: 2
Likes: 0
The dowel pin is what TURNS your optispark. It seats into the back of the opti through the timing pulley and it actually turns the rotor. If the dowel pin is not long enough, it may slip out of the groove in the back of the opti and throw your ignition timing WAY off. Also it could tear up the opti and cause it to fail. If your dowel pin is too long, it wont let the opti seat up like it is supposed to and that could do damage as well.
No to disrespect you or anything, but have you actually TESTED the opti's to make sure that it in fact WAS the opti that failed?? You may have another issue in there that is causing it to cut out or have issues and the opti may not be the culprite at all!
No to disrespect you or anything, but have you actually TESTED the opti's to make sure that it in fact WAS the opti that failed?? You may have another issue in there that is causing it to cut out or have issues and the opti may not be the culprite at all!
