I've got the opti blues
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On The Tree
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From: Here And There, KY
I've got the opti blues A buddy of mine, his Z just had an opti fail. So he replaced it and the car ran ok for about 30 mins, started missing, check engine came on, and quit. Won't start back again.
What would cause an opti to go out so easily?
What would cause an opti to go out so easily?
TECH Apprentice
Joined: May 2010
Posts: 333
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From: Arkansas
it may be the harness, And where did he get the opt, I got one at autozone years back, 149$ with a lifetime warranty that they do honor very very well. I'd say its a 50-50 chance of theirs working out of the box, I've been through several. longest one of theirs has lasted me was about 6 months, got tired of that got one on ebay and it lasted around 6 months... scan it if you have not.
Thread Starter
On The Tree
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From: Here And There, KY
Yea sux bad. He called me with a few choice words for his lt1. Just got the tranny back in and now the opti is causing trouble. He hasn't got to drive it at all this year.
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On The Tree
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From: Here And There, KY
Update: Still have problems.
After swapping out a few optis and replacing a couple fuses, there seems to be another problem.
The car starts when cold and runs great for a bout ten or fifteen minutes. As soon as it reaches operating temperature you can hear the engine change and the car eventually quits. You can start revving it up before it dies and it just loses all power. And it won't start back til it cools down. We have swapped ICMs, optis, Coils, temp sensor, etc.
What are we overlooking? Could the Computer be goin down? He said before he changed the temp sensor, the fans would come on real early. Its been a couple weeks like this now.
After swapping out a few optis and replacing a couple fuses, there seems to be another problem.
The car starts when cold and runs great for a bout ten or fifteen minutes. As soon as it reaches operating temperature you can hear the engine change and the car eventually quits. You can start revving it up before it dies and it just loses all power. And it won't start back til it cools down. We have swapped ICMs, optis, Coils, temp sensor, etc.
What are we overlooking? Could the Computer be goin down? He said before he changed the temp sensor, the fans would come on real early. Its been a couple weeks like this now.
Thread Starter
On The Tree
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From: Here And There, KY
Where have u guys been lol.
Ground is good.
As for a code. There is none I don't think until it dies out. When I try to start it again, I get the opti code which is 16. That may be normal on failed starts though? Is it? Or do we have junk opti sparks?
Not sure on the heatsink compound but ill try it.
Ground is good.
As for a code. There is none I don't think until it dies out. When I try to start it again, I get the opti code which is 16. That may be normal on failed starts though? Is it? Or do we have junk opti sparks?
Not sure on the heatsink compound but ill try it.
Teching In
Joined: Jul 2010
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You replaced opti's and fuses but you did not say anything about the opti wiring harness, usually they get very brittle from the heat of the engine or coolant/moisture gets in them and they corrode and this could cause intermittent connections. The wiring harness can be purchased from ebay or summit and is worth replacing regardless.
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On The Tree
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From: Here And There, KY
I'll give it all a try.
I've been taking parts off mine and troubleshooting his.
Weird thing, we thought we fixed it, replaced o2 sensor and it ran okay for a day. Washed it, and it started doing it again. My first thought was the o2 wiring. He has homemade extensions. I thought they grounded out or something.
I've been taking parts off mine and troubleshooting his.
Weird thing, we thought we fixed it, replaced o2 sensor and it ran okay for a day. Washed it, and it started doing it again. My first thought was the o2 wiring. He has homemade extensions. I thought they grounded out or something.
Staging Lane
Joined: Jul 2009
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From: Brewerton, NY