LT1-LT4 Modifications 1993-97 Gen II Small Block V8

new opti $?

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Old Jul 24, 2008 | 01:58 PM
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Default new opti $?

So i guess that my opti is going. It make's since cause after my car set for a while(i guess the antifreeze dried. How hard is it to replace an opti i take it all i would need is the cap. My buddy said his uncle rob said i would be crying but i have enough patience to take everthing apart so i don't lose my *** at a garage or dealer. How hard? Oh sorry i didn't tell you what happen kinda of pissed me off radiator leaked got new radiator put it in then a freaking heater hose bust's on me. it idle cold at 1000 then drops to 800 then to 700
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Old Jul 24, 2008 | 02:11 PM
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I would just replace the whole thing. Is the SES light on? You might check for the DTC 16. If it pulls up, you need more than just the cap. You need the whole thing with the optical sensor. Its easier to do this anyway. Its actually pretty simple. If you did all the stuff in your signature, it shouldn't be a problem. Its even master-keyed so you don't mess it up.

The cap is a little bit more tedious and you have to get a special tool. I think its a t4 torx socket. Not sure if that's the right term for it or not, but either way, just doing a cap and rotor is not worth the effort IMO
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Old Jul 24, 2008 | 02:14 PM
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i don't have the money for all new stuff like that. Why do i need replace anything more then the cap? if everthing else is still good i'm not going with no performance opti i'm just getting here back on the road and going. without having to worry about stalling out and dieing i guess when i replace my heater hose in the next few day's. maybe the opti will dry out if that's the problem. i mean the car has no problem reving up and going it doesn't hesitate so i'm just cofused. i mean i naturally want to think its the opti but with the fact all the water went up instead of down and no water even leaked on the ground it was so small it may not be the opti. I had heard once about checking my tp's voltage how do i do that
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Old Jul 24, 2008 | 02:17 PM
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The opti is not a difficult job, it does take some time, but I'd say for a first timer, 5 hours max.
You can get an opti from "thepartsladi" on ebay. Genuine products, and their prices can't be beat. I got my AC Delco for $280 shipped. I bought a Delphi for a buddy for $230 shipped. Takes about a week to arrive, comes in original packaging.
I would recommend doing the wires while you're at it (if aged), its much easier that way. Same with the coil. Test the ICM too.
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Old Jul 24, 2008 | 02:18 PM
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oh and no the ses light is not coming on.
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Old Jul 24, 2008 | 02:19 PM
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i found a remaned opti at oreillys for 150 lifetime warranty to.
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Old Jul 24, 2008 | 02:21 PM
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Originally Posted by Kmaroman
i found a remaned opti at oreillys for 150 lifetime warranty to.
NOOOOO!!!!!!!!!!!
OEM is the ONLY way to go...trust me!
Buy from "thepartsladi" you'll thank me.

EDIT: Take my advice...replace the WHOLE thing, not just the cap and rotor. You'll thank me for that too.
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Old Jul 24, 2008 | 02:25 PM
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nape has an one for 229. Honestly i shouldn't have to replace the rotor wright i don't really know much about the internal's of a distributor you know where i can get and exploded veiw at to bring me up to a more knowledgeable level
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Old Jul 24, 2008 | 02:29 PM
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Originally Posted by Kmaroman
nape has an one for 229. Honestly i shouldn't have to replace the rotor wright i don't really know much about the internal's of a distributor you know where i can get and exploded veiw at to bring me up to a more knowledgeable level
The opti consists of roughly two halves. The optical sensor side (hence "optispark") and the high voltage side (cap & rotor). Most problems occur because the cap and rotor have deteriorated or failed. You can get away with doing just a cap and rotor, but I STRONGLY recommend against it. Who knows how long your optical sensor & wheel will last. You are better off replacing the whole thing. Don't buy it from any local autoparts store. You NEED to get either an AC Delco or a Delphi genuine OEM opti.
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Old Jul 24, 2008 | 02:32 PM
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what do u mean by replace the whole thing. My motor was rebuilt and has 78k mile's on it so the opti is probaly new. I thought the cap an rotor was the whole thing what do u mean ss. I have little knowledge with distributors
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Old Jul 24, 2008 | 03:15 PM
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Originally Posted by ss.slp.ls1
The opti consists of roughly two halves. The optical sensor side (hence "optispark") and the high voltage side (cap & rotor). Most problems occur because the cap and rotor have deteriorated or failed. You can get away with doing just a cap and rotor, but I STRONGLY recommend against it. Who knows how long your optical sensor & wheel will last. You are better off replacing the whole thing. Don't buy it from any local autoparts store. You NEED to get either an AC Delco or a Delphi genuine OEM opti.

Agreed. Thepartsladi, or someone who sells Genuine parts is the way to go. I wasn't getting any codes on my 2yr old opti, but if you look for the most recent thread by me you see the RUST that is all over my optical disc (only one side). Cap and rotor were actually fine.
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Old Jul 24, 2008 | 03:28 PM
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Originally Posted by Kmaroman
what do u mean by replace the whole thing. My motor was rebuilt and has 78k mile's on it so the opti is probaly new. I thought the cap an rotor was the whole thing what do u mean ss. I have little knowledge with distributors
78K on the motor since the rebuild or on the car as a whole? The whole thing means not just the cap and rotor but the entire distributor. Just because an engine is rebuilt, doesn't mean that a new distributor was used.
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Old Jul 24, 2008 | 03:42 PM
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Originally Posted by Kmaroman
i found a remaned opti at oreillys for 150 lifetime warranty to.


No all that is is a new sensor!!!!! That is not a complete unit

I ordered mine from thepartsladi
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Old Jul 24, 2008 | 03:47 PM
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IF it is in fact the opti that is causing your problem, here is the simplest solution:
http://cgi.ebay.com/ebaymotors/92-93...mZ170243101655
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Old Jul 24, 2008 | 09:13 PM
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I think everyone here has the right idea. Get the entire assembly. Not only is it much easier to put in, I have had bad luck with the cap and rotor only idea. I bought a whole opti from GM and never looked back. Get an AC Delco one. If you have any problems finding one or don't like the prices, PM me and let me know. I'll see what I can do.
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