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

Not my opti?

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Old 10-09-2004, 11:27 AM
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Location: Saskatchewan, Canada
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Not my opti?

Ok my car is running like crap sometimes. I can drive normal for 80% of the time and it will be fine but if I got WOT once then the SES light comes on and its like the motor cuts out for a couple seconds then comes back. I took my car to GM and they got DTC 36 Hi Res Signal. We were reading the book and it could be one of 3 things. Its either the PCM, the opti, or 1 other thing. Now about 3 weeks ago I was driving it and it finally just died on me and wouldn't start. So I towed it home and let it sit. Now today I went out, boosted it and it fired right up! If It were my opti wouldn't it crap out right away?

Anyone know what exactly I need to test to find out if its my PCM or opti? Anyone know what the 3rd problem might be for DTC 36? Any help is appreciated!
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Old 10-09-2004, 11:39 AM
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Re: Not my opti?

High res signal is most likely the opti I was getting the same or a similar code and it was the opti check shoebox's site it tells you how to check the opti.Site
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Old 10-09-2004, 12:00 PM
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Re: Not my opti?

Yea it just died again on me I'm pretty sure its the opti but I can't get over how I let it sit for 3 weeks then it fired right up no problem.
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Old 10-09-2004, 12:01 PM
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Re: Not my opti?

Thanx for that. I fogot about his page Yea I'm pretty sure its the opti, I just can't get over how it sat for 3 weeks then fired right up.
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