1993 lt1
Thread Starter
3rd Gear
Joined: Aug 2018
Posts: 3
Likes: 0
1993 lt1
I have owned a 1993 Coupe for the last 9 years. The Optispark was replaced twice along with the coil and ignition module. Several weeks ago I had her out and she died. Tried to start and she just cranked. A short time later she started. Towed to a Chev dealer who are Corvette Specialists and after 1 week of trouble shooting determined it was the fuel pump. After $678.00 I now have the same problem (did make it out of my garage).
Any ideas????
Any ideas????
Safety Car
Joined: Jan 2004
Posts: 4,549
Likes: 343
From: Glastonbury CT
I have a 93 and bought it new. Never brought it to any garagr. Get the service manual first. Second sounds like you are throwing parts at it.. Are you the original owner? Any modifications? There are items that will wear with mileage heat is one of your largest problems and that OB1 is tough to pick up codes. So what make of Opti vented? Was the water pump changed at same time of opti? )always ask for parts to be saved when replacing}The only problem i ever had was the opti and dead water pump spitting on non sealed factory opti. {gasket around unit) is not sufficent unless marine silicone is used. As far as coil and ignition module they are bullit proof the replacement are all low bid items that fail even quicker than the original.I know i went through all this bull **** since 1993. Send me any questions i will be glad to help you.
Thread Starter
3rd Gear
Joined: Aug 2018
Posts: 3
Likes: 0
I have a 93 and bought it new. Never brought it to any garagr. Get the service manual first. Second sounds like you are throwing parts at it.. Are you the original owner? Any modifications? There are items that will wear with mileage heat is one of your largest problems and that OB1 is tough to pick up codes. So what make of Opti vented? Was the water pump changed at same time of opti? )always ask for parts to be saved when replacing}The only problem i ever had was the opti and dead water pump spitting on non sealed factory opti. {gasket around unit) is not sufficent unless marine silicone is used. As far as coil and ignition module they are bullit proof the replacement are all low bid items that fail even quicker than the original.I know i went through all this bull **** since 1993. Send me any questions i will be glad to help you.
1st Gear
Joined: Mar 2018
Posts: 1
Likes: 0
Same problem
They replaced the Fuel Pump. Picked up the car on 7/31 and did not start it till 8/7. Got half way out of the garage and it died. Same problem. It was towed to the same dealer and on the 14th told me it was the opti spark plus the car was hit by a tech. This will be the third opti spark if I agree. The one that is in the car was installed by them in 2013 and with only 2000 miles on it. A lot of issues with this dealer. It is said that they are the Corvette specialist in the Chicago land area. I will put the dealers name out there if they do not agree to my terms. Oh they said it through a code 55. This is a fuel issue. Code 36 is opti spark????
Safety Car
Joined: Jan 2004
Posts: 4,549
Likes: 343
From: Glastonbury CT
Take it to amother shop! Join a corvette club some one might help you. Keep asking questions you are not driving a Tesla where there is no service books on demand. Go to Utube if you are not mechanicaly they will take advantage. Join the NCRS they can help to!
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Le Mans Master
Joined: Sep 2013
Posts: 6,192
Likes: 750
From: near the thumb in the mitten
It's worth a visit to the the dealership to discuss the situation. SM, GM, or Dealer Principle ( owner). Dealers are supposed to guarantee their work 12mo/12k. Of course a new failure wouldn't be covered, but possibly discounted. After rereading post. You want to see Dealer Principle and discuss his service dept.
Last edited by Kevova; Sep 15, 2018 at 10:19 AM.
Race Director
Joined: Sep 2001
Posts: 14,659
Likes: 749
From: NEwhere Ohio
i had my ostrich moates adapter ‘wiggle out’ of the ecm socket. Likely bc of increased vibration from solid motor mounts.
at WOT, especially with a good hook in 1st, the car would suddenly lose all electrical power.
i chased grounds for 6 months , until i realized it wAsnt the grounds - it was the adapter wiggling out of the ecm socket !
i guess a chip could wiggled out too if it wAsnt latched i properly
Safety Car
Joined: Sep 2010
Posts: 3,752
Likes: 190
From: Indiana PA
You can either diagnose the issue or throw parts at it. Testing is cheaper than parts. If people hate to pay for a good mechanic try paying a bad one......