Be sure and pull the plug wire off each plug as the heat can melt or burn the boots and cause misfires. I've been reading where many people had same issue as you and it was plug wires, even on new plug wires. Buy the MSD or Accel 900 ceramic boots as they will not melt and cause issues. This could be your issue, pull them all one by one and check them.
Man that bites! Before you swap the motor, maybe someone in a local corvette club can recommend a good specialist mechanic that can figure it out. I like to take a shot at things too but sometimes I need help.
Nice video also have a 94, yea it seems you have another issue hope you get it running. I am going on my 2nd opti with 105k. Bit the bullet and converted to Torghead to just get rid of the opti had it done last week. I just cannot drive knowing if the car is going to leave me somewhere. What headlights are you running, I need to change mine out and want to go projection.
Thanks for stopping by! I was going to convert to the Torquehead system last year but parts were on backorder forever it seems like! I may still go that route at some point. The headlights are Genssi LED bulbs. I did a video review on them awhile back...they are really nice! ua-cam.com/video/XXgoC9lYI2A/v-deo.html
@@Amundred Thanks for the info..... it is for a vin J but since you have the service manual did you already replace the ICM? I was looking at my 94 service manuals those 2 DTC's deal with the ICM for vin J I know we have a vin P but you never know.
@@jimmorgan1078 I actually did replace it! Unfortunately, it did not seem to help. I did find a vacuum leak (bad throttle plate gasket) and replaced my IAC this past week...haven't tried starting it yet though.
Why in the F___ would they put the Optishit unit way under there.??? Just say no to the LT1 and newer motors. They are supposedly faster but definitely not worth the additional headaches. That's MY advise.!!!
With the aftermarket coil, the cable with the 90* bend seems to snap on much better. On your drivers side, did you route your wires properly? By properly, I mean if looking at the wires from the drivers side, are they all the was under the power steering hose. Wires should be in the small gap between the bracket and hose, not over the hose.
Yup, all wires behind the bracket and beneath the hose - I am going to put the new wires on this weekend and try to fire up the car to see if it runs any better on the off chance that there is a wire issue somewhere
@@Amundred If you globbed on to much antiseize on the plugs, it can make it's way to the electrode and ground out the plug, also the electrical silicone for the wires, should go on the boots only, not on the connections, that would cause the engine to run poorly.
@@Amundred Your last video of opti replacement sounds like crossed wires on either opti or plugs!👿 Did you use the aftermarket harness?? A video I saw on a guy who did the same as you said there's a harness pin in the new harness ,he had to remove because it wasn't matching the stock harness.
I just went through the same issue with my 92 LT1 corvette and finally fixed it! It was a long frustrating process! But don't give up!!! Message if u have any questions.
I am actually in the process of pulling the LT1 for a rebuild! I just started the project and do not have any deadlines. Taking my time and deciding what exactly I want to do. Definitely going with a Stroker build...just ironing out the details
ua-cam.com/video/XXgoC9lYI2A/v-deo.html I link the headlights and parts needed in the description of that video - I'll link them here when I get a moment 👍 Looks like the link leads to a new version?
Man I'm going through the same shit 😪. My car has been sitting for four years because of a bad optispark .I'm planning on going to Torqhead coil per cylinder ignition when money 💰 permits.
Thanks for stopping by and commenting! These are Replica C4 Grand Sport Wheels - lots of different places sell them 17"x9.5" fronts (50mm offset) 17"x11" rears (36mm offset) 👍
As always your videos are very informative 👌 👍🏻 I removed waterpump today off my 95 C4 and the bearing on the back side of the pump had gone bad seeing the lil ball-bearings and the lil drive piece that connects to the cam is rusted to the back of the waterpump drive... I got the three bolts out of the crank pulley but i can't remove the pulley... do you have any suggestions?
@@mrdeanv4414 Maybe spray it down and let some penetrating oil work on it overnight? The pulley can definitely get stuck on the pulley with a little rust
Just saw start up did you read those plugs and While at it do a compression test that’ll tell the story also scan the computer look at your senses see what they’re reading
Yeah, I gapped the plugs and checked for spark...I actually end up pulling everything (intake and heads) to check gaskets somewhere in a video 😂 The computer was being very unreliable (I think that may have been the issue all along!) so that is getting replaced during the rebuild process too!
They are definitely difficult to find! I still have my original Opti and had considered having it rebuilt using a rebuilder on eBay that comes highly recommended.
Petris is supposed to be a great alternative to Delco. I am about to change my stock Opti for one because I am having the run for 15 mins and then stall issue going on. Doesn't start back up until the car cools down. Anoying as hell
I haven't done anything else with the Corvette lately. I did pull the codes after resetting them from the Opti install and found some issues with MAP, IAC and EVAP readings. I did a video where I replaced the MAP sensor and EGR components. I have a new IAC which I will be installing this week and I feel like there is a vacuum leak somewhere causing some of the issue. I will take a look at the vacuum lines and throttle body gaskets when I do the IAC. I'll make another Corvette video to hopefully upload before the end of the week with an update!
I have some videos on my 92. Nothing on actual tracking or fixing process. But some proof I have one and it runs right, so feel free to ask any questions.
Be sure and pull the plug wire off each plug as the heat can melt or burn the boots and cause misfires. I've been reading where many people had same issue as you and it was plug wires, even on new plug wires. Buy the MSD or Accel 900 ceramic boots as they will not melt and cause issues. This could be your issue, pull them all one by one and check them.
I definitely need to get some of those boots! I did just install all brand new plugs and wires!
Man that bites! Before you swap the motor, maybe someone in a local corvette club can recommend a good specialist mechanic that can figure it out. I like to take a shot at things too but sometimes I need help.
sounds like your misfiring on a few cylinders? did you replace the wires? how is the conductivity?
Nice video also have a 94, yea it seems you have another issue hope you get it running. I am going on my 2nd opti with 105k. Bit the bullet and converted to Torghead to just get rid of the opti had it done last week. I just cannot drive knowing if the car is going to leave me somewhere. What headlights are you running, I need to change mine out and want to go projection.
Thanks for stopping by! I was going to convert to the Torquehead system last year but parts were on backorder forever it seems like! I may still go that route at some point.
The headlights are Genssi LED bulbs.
I did a video review on them awhile back...they are really nice!
ua-cam.com/video/XXgoC9lYI2A/v-deo.html
@@Amundred Thanks for the info..... it is for a vin J but since you have the service manual did you already replace the ICM? I was looking at my 94 service manuals those 2 DTC's deal with the ICM for vin J I know we have a vin P but you never know.
@@jimmorgan1078 I actually did replace it! Unfortunately, it did not seem to help. I did find a vacuum leak (bad throttle plate gasket) and replaced my IAC this past week...haven't tried starting it yet though.
Why in the F___ would they put the Optishit unit way under there.??? Just say no to the LT1 and newer motors. They are supposedly faster but definitely not worth the additional headaches. That's MY advise.!!!
@@marblox9300 agreed! This is a terrible design and I said to heck with this and sold the car! 😂
@@Amundred Good Man - most Corvettes are a royal PITA.
With the aftermarket coil, the cable with the 90* bend seems to snap on much better. On your drivers side, did you route your wires properly?
By properly, I mean if looking at the wires from the drivers side, are they all the was under the power steering hose.
Wires should be in the small gap between the bracket and hose, not over the hose.
Yup, all wires behind the bracket and beneath the hose - I am going to put the new wires on this weekend and try to fire up the car to see if it runs any better on the off chance that there is a wire issue somewhere
@@Amundred If you globbed on to much antiseize on the plugs, it can make it's way to the electrode and ground out the plug, also the electrical silicone for the wires, should go on the boots only, not on the connections, that would cause the engine to run poorly.
@@Amundred Take a strong light and look at all your wires, make sure nothing got chopped up and all plug boots are on tight!💣💥
@@Amundred Your last video of opti replacement sounds like crossed wires on either opti or plugs!👿
Did you use the aftermarket harness??
A video I saw on a guy who did the same as you said there's a harness pin in the new harness ,he had to remove because it wasn't matching the stock harness.
@@geneyus6411 yes, there was an aftermarket harness that came with the Opti...I will have to check that!!!!
I just went through the same issue with my 92 LT1 corvette and finally fixed it! It was a long frustrating process! But don't give up!!! Message if u have any questions.
I am actually in the process of pulling the LT1 for a rebuild! I just started the project and do not have any deadlines. Taking my time and deciding what exactly I want to do. Definitely going with a Stroker build...just ironing out the details
@@Amundred awesome!!! Hope everything works out for you!!! I'm very curious on your build. Please keep me updated or post some videos. Lol.
If you just went through same issue, why don't you say what fixed it???
His parts cannon is reloading!😁😂🤣💣
@@geneyus6411 because it was a hual of parts and not completely sure exactly what it was!! That's why.
@@geneyus6411 sounds like you no nothing about the OBD1 vettes!!! 80% of drivabilty issues do NOT throw a code!!!
What headlights do you have?
ua-cam.com/video/XXgoC9lYI2A/v-deo.html
I link the headlights and parts needed in the description of that video - I'll link them here when I get a moment 👍
Looks like the link leads to a new version?
@@Amundred Thank You! They look sweet!
Yeah, I really like the way that they look - and they work extremely well too!
In case you hadn't seen it, I did a video review of the headlights:
ua-cam.com/video/XXgoC9lYI2A/v-deo.html
just did the paper clip trick in my c4 95 port and there were 2 codes... C34 and H34... is this the Optispark?
I believe that those are MAP sensor codes. I had that happen to mine and replacing the MAP sensor was the fix...think I had a video for it even!
ua-cam.com/video/hys_banJKPw/v-deo.html
Awesome... Thanks
Man I'm going through the same shit 😪. My car has been
sitting for four years because
of a bad optispark .I'm planning on going to Torqhead
coil per cylinder ignition when
money 💰 permits.
Why has your car been sitting for 4 years because of the distributor?
What is your car?
@@C4VETTELT1 94 pontiac firebird formula six speed.
Water pump went bad coolant
leaked down into the optispark .
@@vincentfisher4748 why has it sat for 4 years though? Optispark replacement isn't that hard, I just did the Optispark, waterpump and hoses.
What kind of wheels are those?
Thanks for stopping by and commenting!
These are Replica C4 Grand Sport Wheels - lots of different places sell them
17"x9.5" fronts (50mm offset)
17"x11" rears (36mm offset)
👍
As always your videos are very informative 👌 👍🏻 I removed waterpump today off my 95 C4 and the bearing on the back side of the pump had gone bad seeing the lil ball-bearings and the lil drive piece that connects to the cam is rusted to the back of the waterpump drive... I got the three bolts out of the crank pulley but i can't remove the pulley... do you have any suggestions?
Is the pulley off the crank and in there loose and you just cannot get it from between the crank and frame, or it is stuck on the crank?
@@Amundred the 3 bolts are out... I just can't get the crank pulley to slide off
@@mrdeanv4414 Can you use a pry bar and put some pressure on the backside of the pulley?
@Amundred yes and it's not making a difference at all
@@mrdeanv4414 Maybe spray it down and let some penetrating oil work on it overnight? The pulley can definitely get stuck on the pulley with a little rust
Just saw start up did you read those plugs and While at it do a compression test that’ll tell the story also scan the computer look at your senses see what they’re reading
Yeah, I gapped the plugs and checked for spark...I actually end up pulling everything (intake and heads) to check gaskets somewhere in a video 😂
The computer was being very unreliable (I think that may have been the issue all along!) so that is getting replaced during the rebuild process too!
You love the car because it runs consistently bad?
@@jarmstrong2843 haha...I finally stopped loving it and sold it 😂
I’m no expert but I’m a mechanic for over 55 years I was told the unit blows up because of bad spark plug wires makes sense to me
I would believe that! I did order new wires for the rebuild (new everything basically!)
Sounds like your firing order is off. Check the order.
I cannot find a Delco optispark. Had to use aftermarket china junk. I hope it last.
I found a rebuilt Delco on Amazon for a good price.
They are definitely difficult to find! I still have my original Opti and had considered having it rebuilt using a rebuilder on eBay that comes highly recommended.
Petris is supposed to be a great alternative to Delco. I am about to change my stock Opti for one because I am having the run for 15 mins and then stall issue going on. Doesn't start back up until the car cools down. Anoying as hell
@@usaf20071989 I actually have a Dynaspark that was installed, I pulled it out and put in a cheap one to test out...ended up not being the Opti lol
Why do you keep mentioning your height?? Don't you know big boys fall down too??😂🤣🙄
So did you figure out what went wrong?
I haven't done anything else with the Corvette lately. I did pull the codes after resetting them from the Opti install and found some issues with MAP, IAC and EVAP readings. I did a video where I replaced the MAP sensor and EGR components. I have a new IAC which I will be installing this week and I feel like there is a vacuum leak somewhere causing some of the issue. I will take a look at the vacuum lines and throttle body gaskets when I do the IAC.
I'll make another Corvette video to hopefully upload before the end of the week with an update!
I have some videos on my 92. Nothing on actual tracking or fixing process. But some proof I have one and it runs right, so feel free to ask any questions.
I know the feeling 🤦♂️
Oh no! 😢
oooof‼️🤦🏾♂️☹️
Yup 😢