15 months/5K miles on the Petris. No issues.
Opti Blues Again
Thread Starter
Racer
Joined: Mar 2002
Posts: 312
Likes: 6
From: Troy Al
Opti Blues Again
I love my 93 coupe. But failed distributors have cause more down time. Over 17 years I've owned the car, maybe a halve dozen or so. The last time I carried it to the Chevy dealer, because I must be doing something wrong. No AC/ Delco available, but I found a Delphi, and put that in. That was in Oct. 94. But only 4000 miles ago. It shouldn't fail this soon. I got a 106k on the car now. It had 60k when I bought it in 2000. I feel like i am beating my head against a brick wall. Very frustrating. Oh, and to top it off.(bad pun) I just replaced the targa top lens. Rick at CorvetteTops did a good job. That is to say it looks good. Only drove it once, so no chance to rain test it yet.. I can either do the job myself, or hire it out. But what is the best Opti to get? When the chevy dealer did the last one they replaced the ICM that they said was bad, and could be causing the failures. Should I replace it too? I had the ECM rebuilt shortly before the last rebuild, maybe time before last. Any thought Ideas, or suggestions appreciated.
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
No one knows. We're all part of a big experiment. 
It think everyone agrees that an OEM unit w/the Mitsubishi sensor is the best. Find one, though.
I can't see how in the world the ICM could cause an opti failure. Doesn't sound plausible.
It think everyone agrees that an OEM unit w/the Mitsubishi sensor is the best. Find one, though. I can't see how in the world the ICM could cause an opti failure. Doesn't sound plausible.
Pro
Joined: Sep 2012
Posts: 732
Likes: 72
From: the confused state CT
There was a guy on ebay rebuilding optis. He said he has a line on some nos mitsubishi sensors for the earlier optis. i believe someone here has bought one. But they don't have a track record yet. I bought an AC Delco for my 95, I was not impressed and it had a problem so it went back.
I have read, don't know from experience, doing the vent conversion on yours may help with reliability.
Gary
I have read, don't know from experience, doing the vent conversion on yours may help with reliability.
Gary
Melting Slicks
Joined: Oct 2016
Posts: 2,024
Likes: 363
From: Central Alabama
JMO but there are two good choices. The Petris and the one buy Optidoctor sold on ebay.
I have a 92 that I recently replaced. Both options add venting to the earlier non-vented setup.
I went with the one from Optidoctor because it uses a NOS Mitsubishi sensor.
Another school of thought is buy cheap and change more often.
I have a 92 that I recently replaced. Both options add venting to the earlier non-vented setup.
I went with the one from Optidoctor because it uses a NOS Mitsubishi sensor.
Another school of thought is buy cheap and change more often.
Instructor
Joined: Nov 2012
Posts: 240
Likes: 18
From: Carrollton Illinois
I’ve been running the Petris one for about 6 months. For some reason it throws a cel but I just programmed it not to show through tuner cats. Other than that it works great! I bought the extended warranty too.
Advanced
Joined: May 2008
Posts: 60
Likes: 0
From: Colorado Springs
Instructor
Joined: Apr 2017
Posts: 187
Likes: 24
From: Columbia South Carolina
Quick question what is the average labor cost to have the opti replaced at a mechanic? Mine is still working but is starting to take a little longer to start when warm. I think I have been lucky it’s just starting to act up , just hit 114k and is a 94. Without the great knowledge on this form I wouldn’t know all the small nuggets of info on my car, y’all are great!
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Intermediate
Joined: May 2013
Posts: 35
Likes: 1
From: NOWATA OKLAHOMA
opti-fix
I love my 93 coupe. But failed distributors have cause more down time. Over 17 years I've owned the car, maybe a halve dozen or so. The last time I carried it to the Chevy dealer, because I must be doing something wrong. No AC/ Delco available, but I found a Delphi, and put that in. That was in Oct. 94. But only 4000 miles ago. It shouldn't fail this soon. I got a 106k on the car now. It had 60k when I bought it in 2000. I feel like i am beating my head against a brick wall. Very frustrating. Oh, and to top it off.(bad pun) I just replaced the targa top lens. Rick at CorvetteTops did a good job. That is to say it looks good. Only drove it once, so no chance to rain test it yet.. I can either do the job myself, or hire it out. But what is the best Opti to get? When the chevy dealer did the last one they replaced the ICM that they said was bad, and could be causing the failures. Should I replace it too? I had the ECM rebuilt shortly before the last rebuild, maybe time before last. Any thought Ideas, or suggestions appreciated.
Melting Slicks
Joined: Oct 2016
Posts: 2,024
Likes: 363
From: Central Alabama
I was lucky with the balancer it came right off. Just a few taps with a 1x1 wood stick from underneath.
As far as the water pump seal tool, I couldn't see paying what they cost so I printed one on the 3D printer.
As far as the water pump seal tool, I couldn't see paying what they cost so I printed one on the 3D printer.
Drifting
Joined: Oct 2015
Posts: 1,674
Likes: 191
From: Shit Creek, USA
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
Team Owner
Joined: Jul 2004
Posts: 28,426
Likes: 3,277
From: Hartford WI
http://www.torqhead.com/buy-24xlink-...=0&sort=normal
Last edited by aklim; Dec 22, 2017 at 10:15 AM.
Team Owner
Joined: Jul 2004
Posts: 28,426
Likes: 3,277
From: Hartford WI
True but it adds a new dimension to the car. Easier time to get someone to tune an LS than LT. If you are modifying, it will help
Team Owner
Joined: Jul 2004
Posts: 28,426
Likes: 3,277
From: Hartford WI