LT1-LT4 Modifications 1993-97 Gen II Small Block V8

HELP?? CODE 36 -High RES Failure

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Old Jun 12, 2009 | 03:47 PM
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Default HELP?? CODE 36 -High RES Failure

So I havent drove my car in about 4 month or even turn it on and had my battery disconnected so my battery wouldnt be drain and started yesterday and was fine for a few hour then just shut down on me. Got my scanner and found to code 36 and fan fault 1. Could me disconnecting mt battery cause it to like how to relearn itself or something like that?? This is a 94 LT1 396
A4.
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Old Jun 12, 2009 | 06:27 PM
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Mine threw the same code, right after I did a H/C swap on my 383. It ended up being my optical sensor, in my Opti..Have you tried to start or even drive your car?
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Old Jun 12, 2009 | 06:53 PM
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yea I drove the car yesterday for like have the day then when my gas started to get low I pump up and then started to act up. so I pull my scanner and said code 36, I just change my coil cause my car kept shutting off before that, I didnt change my coil wire so maybe should tried that.
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Old Jun 12, 2009 | 07:07 PM
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You can check the coil wire, like for corrosion, or a break,etc..But Id put my money on your Opti. If you do a search on here or cz28...most of the replies/posts, have to do with Optispark.
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Old Jun 12, 2009 | 07:09 PM
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Do you think a MSD 6a would help me for an all motor. After let say it is my opti. Would just having that msd help my car out..
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Old Jun 12, 2009 | 07:14 PM
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IMO, no. When I had it on my bolt-on motor, I never could tell a BIG difference. But, thats just me.
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Old Jun 12, 2009 | 07:22 PM
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is there anything better out there then opti if not which opti should I go with cause to me they all take a **** fast. any other option
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Old Jun 12, 2009 | 07:29 PM
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I just ordered a new GM unit from Summit. Or you can switch over and run a LS1 pcm. There should be a few posts about that on here.
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Old Jun 12, 2009 | 07:36 PM
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i'll do some searches on that and see if not then same-o opti
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Old Jun 12, 2009 | 07:41 PM
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some have said an aftermarket ignition box aids in premature opti failure. I can can relate because I had an accel 300+ ignition box that took my opti out at 28,000mi. I would stick with a oem replacement opti, most aftermarket have shown to be less reliable than stock. Your other option would be to switch over to the ls1 pcm and run coil per cylinder setup.
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Old Jun 12, 2009 | 07:49 PM
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that LS1 coil setup, how that?? and is it a hassle.
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Old Jun 13, 2009 | 06:54 PM
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well you have to get a ls1 pcm and wiring harness, fab it in, then get the coils and install it all, then tune it. Im sure it's no walk in the park. There is a thread in here about it. if you do a search you might find it!!
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