LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Water pump failed. How long before Opti does too?

Old 03-03-2019, 09:57 PM
  #31  
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Re: Water pump failed. How long before Opti does too?

I would go electric water pump. Then keep optical portion of opti and run LTCC.
Or you can go big and buy my 24x setup sitting in my garage....
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Old 03-06-2019, 10:19 PM
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Re: Water pump failed. How long before Opti does too?

Looking at the availability let alone the cost of a replacement engine harness the 24X conversion makes more sense. And a 24X allows Gen I sbc installation. Heck I don't see why a BBC can't run on 24X ignition and computer. I maybe dreaming here but a BBC in my 4th gen is what I really want. I'm just not a LS fan. If I did want a LS powered car I would start over and buy a late model 4th Gen camaro.
Distributorless ignition conversion seems to be getting better but it's still a huge commitment in effort and money. Heck once you start a 24X conversion you are married to it. I have to wonder how many distributorless ignition conversions have made cars into garage furniture never to run again? I'll struggle on with the opti as I like driving my car more than dreaming about it.
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Old 03-31-2019, 09:31 AM
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Re: Water pump failed. How long before Opti does too?

Only one trouble code was stored: #36 - high resolution failure. Hmmmm, what could that be?

Car still starts and drives so its a matter of finding a location to do this and the time to do the swap also. There goes my vacation time.

Water pump has to come out again so why not upgrade to electric? Well another $200 but its just something I want to do so now is the time. Also found a 4 terminal "delay after break" relay for 'bout 25 bucks. Most W/P's are relayed anyways and this is adjustable for up to 3 min run time after engine off. I'm think'n 1 min of W/P run after shut down would be enough.

So I need a 4 prong relay base to wire my relay into it. Anyone know where to find a automotive cube relay base?
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Old 03-31-2019, 10:47 AM
  #34  
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Re: Water pump failed. How long before Opti does too?

Clear the code and see how quickly it comes back.

The engine will run with DTC 36, suffering only a minor loss of timing accuracy on the ignition (increased spark scatter) and injection..... probably never notice it. Can be a harness problem, corrosion in the Opti connector socket, damaged pin on the connector. Or, the problem could be an issue with the optical cam position module in the Opti, dirt/oil/rust particles on the shutter wheel or emitter/receptor, etc.
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Old 03-31-2019, 11:22 AM
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Re: Water pump failed. How long before Opti does too?

I think it's heat related. Because it takes something near 30 minutes to fault and it returns shortly after stopping and restarting. But let the car sit overnight and it will take over 30 minutes again before the fault returns. That's not the behavior of a loose/poor connection.
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