vettebigguy wrote:
Hi, everyone, last week I was posting the question about my '93LT1 starting and then running for a short while and then dieing. I had it at a Chevrolet dealership and they were just throwing parts at it..anyone remember that story. Well I am here today to tell you all it is now fixed and on the road working just perfectly. A buddy of mine got mad at the dealership ( it is 200 miles from my home , we broke down on the road ) went and got my car on his trailer and took it to his friends shop, John diagnosed the problem and had the car fixed and on the road in less than 24 hours. The Chevy dealership had the car 5 1/2 weeks and could not come up with an answer. Turned out it was the Optispark distributor, it was very rusty and the pick up module inside was screwed. So he put another one in and I was off to the races. I just want to thank every one who responded to my questions and gave me positive good advice and encouragement . Thank you all, it is reassuring to know there are guy out there that are willing to help out. I will keep checking out the forums and hopefully I can return the good will and help someone else out there who is in need. Thanks again everyone !!!! Remember, Don't save the wave....USE IT !!!

Cheers all

Jeff

CentralCoaster wrote:
Well, in his case, the opti wasn't sending reference pulses to the ECM to fire the injectors. Maybe there's no feedback on that system to throw a code (although I remember seeing a code for it).

Blade_1 wrote:

Now for what you have current:
Seems that lost pulsewidth at the injectors should be pretty easy to trace, given an FSM, or experience...

CentralCoaster wrote:
Blade, injector pulsewidth and reference pulse are 2 different things.

"reference pulse" basically is the opti telling the ECM the position of the camshaft, so that it knows when to fire the injectors. This could be one pulse per revolution or 8 pulses, depending on batch fire vs sequential injection.

vettebigguy wrote:
Well, again thanks you guys,it has been suggested more than once that I go after the dealership for some sort of refund, after all 1300 bucks with nothing to show for is a little bit much. Yeah, the guy at the dealership said they didn't have anyone there who knew much about the " Old Cars " ..old cars..geez...but still it is old technology, and should be a no brainer.
John put the car on a SUN scope and it was like the heart monitor when you guys go to the doctor, showed a good clean reading until thing warmed up and the second printout showed the pulses becoming erratic and then the engine died, Passed Away was John's term..and he went right to it ( can you guys tell me how to post a pic and I'll show you what she looked like ) All rusted out, but the module inside was the culprit.
Here is John's info.. John Colliver John's Automotive Service and Carquest 509-276-5392 , he is locate just north of Spokane Washington, guys he is phenomenal !!!!!I would recommend him confidently, his shop is very large and you can eat off the floor, it is so clean..looks like an airplane hanger ! He is an old school guy, he will get all my business from now on !! If any of you call him, tell him where you got his number please, tell him Jeff from Canada with the sick '93 Corvette and that will tie it in. He is very approachable...let me know how you make out.

Let me know about that picture thing and I'll show you the bad distributor..cheers guys

Jeff

vettebigguy wrote:
Yeah, you're not the first guy to suggest a small claims court action, I have asked them for a refund and the suggestion has been passed to the boss', I am going to give them a few more days to make this right then i am going to move onup the corporate ladder. I was told these guys don't like the words 'Small Claims Court" , so we will see where it goes..probably no where, but it is worth a try...

CentralCoaster wrote:
Blade, how'd you find a picture of his mechanic for your avatar?