LC-1 is going nuts.
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This is a discussion on LC-1 is going nuts. within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; So I've had my LC-1 for a year. my friend hit the reset button when I was under partial throttle ...

  1. #1
    Registered User efmd3's Avatar
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    LC-1 is going nuts.

    So I've had my LC-1 for a year.

    my friend hit the reset button when I was under partial throttle and it has read a straight up 5 AFR since.

    I tried resetting it again and doing a free air calibration.

    Is there anything I can do or will I need to replace the sensor?

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  3. #2
    Moderator Donkey's Avatar
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    Try unplugging the sensor from the unit and turning the car to on but don't start it.Turn the car back off and hook the sensor back up.Turn the car back on but don't start it.Let the sensor go though it's warm up and then start the car.
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  4. #3
    Registered User efmd3's Avatar
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    Quote Originally Posted by Donkey View Post
    Try unplugging the sensor from the unit and turning the car to on but don't start it.Turn the car back off and hook the sensor back up.Turn the car back on but don't start it.Let the sensor go though it's warm up and then start the car.
    will try, thanks.

  5. #4
    Registered User efmd3's Avatar
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    ok, that didn't work, but I think another trick did.

    I started rolling down a hill while the afr was pinned full lean, killed the engine and reset the afr then let the sensor heat up and started the engine again.

    now it looks ok:

    Code:
    Time	Corr	Lrng	AFR	LOAD	RPM	EGT	IDC	IAT	KC	PSI	MAF	TPS	LC-1
    0	3.91	-3.12	14.59	0.57	1927	815	3.28	88	0	-9	9.17	5.1	14.67
    219	2.34	-3.12	14.36	0.57	1925	815	3.29	88	0	-9	9.21	5.49	14.7
    438	0	-3.12	13.09	2.14	1984	815	8.89	88	0	0	35.32	100	14.61
    1282	0	-2.34	12.17	1.86	1944	815	10.38	88	2.5	0.29	31.45	100	14.79
    1282	0	-2.34	12.4	1.9	2056	815	10.53	88	2	0.58	32.61	100	13.07
    1282	0	-1.56	11.94	1.95	2088	815	10.57	88	3	0.87	33.67	100	12.63
    1516	0	0	11.6	1.96	2154	833	11.55	88	3.5	1.45	34.96	100	12.55
    1735	0	0	12.06	1.98	2191	842	11.69	88	3.5	1.74	36.14	100	12.41
    1954	0	0	12.4	1.97	2258	851	12.03	88	3.5	1.89	36.73	100	12.51
    2188	0	0	12.06	1.96	2320	851	12.37	88	3.5	2.18	37.81	100	12.61
    2407	0	0	12.06	2.01	2330	860	12.67	88	4	2.32	38.98	100	12.77
    2625	0	0	12.06	2.05	2412	860	13.38	88	4.5	2.47	41.16	100	12.94
    2860	0	0	11.94	2.06	2456	878	13.62	88	5	2.76	42.26	100	12.85
    3079	0	0	12.17	2.14	2505	878	13.87	88	6	3.05	44.03	100	12.77
    3313	0	0	12.06	2.22	2556	887	14.72	88	7	3.34	47.28	100	12.76
    3532	0	0	11.94	2.2	2590	896	15.11	88	7	3.48	48.03	100	12.69
    3750	0	0	12.06	2.22	2668	905	15.94	88	7.5	3.77	49.38	100	12.63
    3969	0	-0.78	11.83	2.28	2693	905	16.23	88	8	4.06	51.18	100	12.6
    4204	0	-0.78	11.71	2.39	2745	914	17.08	88	8	4.35	52.92	100	12.77
    4422	0	-0.78	12.06	2.4	2834	914	18.14	88	8	4.79	56.67	100	12.63
    4641	0	-0.78	11.37	2.55	2877	914	20.28	90	8.5	5.22	61.35	100	12.66
    4875	0	-0.78	11.71	2.64	2952	914	21.42	90	8.5	5.8	64.87	100	12.27
    5094	0	-0.78	11.25	2.71	2983	923	23.21	90	9	6.38	68.79	100	12.2
    5313	0	-0.78	11.25	2.9	3076	932	24.94	90	9	6.96	74.43	100	11.88
    5547	0	-0.78	11.25	2.97	3144	932	26.16	90	9	7.98	77.91	100	11.61
    5766	0	-0.78	11.25	3.13	3184	941	28.94	90	9.5	8.71	83.19	100	11.41
    5985	0	-0.78	11.25	3.26	3275	941	30.74	90	9.5	9.87	89.1	100	11.36
    6219	0	-0.78	11.25	3.45	3342	950	34.76	90	9.5	10.88	95.36	100	11.05
    6438	0	-0.78	11.25	3.73	3438	950	37.41	90	9.5	12.48	106.79	100	11.01
    6672	0	-0.78	11.25	3.88	3542	950	41.57	90	9.5	13.93	114.43	100	11.04
    6891	0	-0.78	11.25	4.08	3639	950	45.8	90	9.5	15.53	123.7	100	10.97
    7110	0	-0.78	11.25	4.24	3728	950	49.3	90	9.5	17.27	131.6	100	10.94
    7329	0	-0.78	11.25	4.24	3848	950	51.82	90	9.5	18.43	135.34	100	11
    7563	0	-0.78	11.25	4.17	3983	950	53.53	90	9.5	18.86	138.51	100	11.13
    7782	0	-0.78	11.25	4.05	4045	950	55.11	90	9.5	18.86	137.32	100	11.13
    8000	0	-0.78	11.25	4.17	4164	950	55.97	90	9.5	18.86	144.75	100	11.3
    8235	0	-0.78	11.25	4.05	4283	950	56.65	88	8.5	18.57	144.45	100	11.26
    8454	0	-0.78	11.25	4.02	4335	941	57.21	88	8.5	18.14	145.93	100	11.11
    8672	0	-0.78	11.25	4.11	4488	941	58.41	88	8.5	17.99	153.72	100	11.35
    8907	0	-0.78	11.25	4.19	4534	932	60.59	88	8.5	18.14	157.86	100	11.3
    9125	0	-0.78	11.25	4.28	4658	923	62.6	88	9.5	18.14	165.99	100	11.26
    9344	0	-0.78	11.25	4.24	4786	941	63.3	88	8.5	17.99	169.06	100	11.22
    9579	0	-0.78	11.25	4.29	4857	914	64.25	88	8.5	17.85	173.49	100	11.29
    9797	0	-0.78	11.25	4.26	4931	932	66.22	88	9.5	17.85	175.88	100	11.13
    10016	0	-0.78	11.25	4.08	5064	932	65.17	86	9.5	17.56	173.84	100	11.13
    10250	0	-0.78	11.25	4.09	5123	914	64.7	86	9.5	16.98	176.91	100	11.22
    10469	0	-0.78	11.25	4.14	5248	932	68.73	86	9.5	17.12	183.27	100	11.33
    10688	0	-0.78	11.25	4.16	5330	950	68.23	86	9.5	16.83	184.72	100	11.29
    10922	0	-0.78	11.25	4.21	5411	950	70.42	86	9.5	16.98	189.83	100	11.33
    11141	0	-0.78	11.25	4.18	5522	977	71.87	86	9.5	16.98	192.38	100	11.35
    11360	0	-0.78	11.25	4.18	5635	959	73.33	86	9.5	16.83	196.4	100	11.27
    11594	0	-0.78	11.25	4.13	5738	995	73.45	86	9.5	16.54	197.5	100	11.3
    11813	0	-0.78	11.25	4.12	5778	968	73.18	86	9.5	16.4	198.28	100	11.32
    12032	0	-0.78	11.25	4.06	5928	995	74.62	86	9.5	16.25	200.62	100	11.33
    12266	0	-0.78	11.25	4.05	6019	986	74.48	86	9.5	16.11	202.97	100	11.19
    12485	0	-0.78	11.25	4.02	6092	986	75.38	84	9.5	15.96	204.14	100	11.2
    12704	0	-0.78	11.25	4.02	6127	986	76.37	84	9.5	15.96	206.49	100	11.23
    12938	0	-0.78	11.25	3.97	6203	995	76.7	84	9	15.96	207.27	100	11.3
    13157	0	-0.78	11.25	3.92	6297	995	75.74	84	9	15.96	208.83	100	11.35
    13375	0	-0.78	11.25	3.94	6378	1004	77.31	84	9	15.53	211.17	100	11.3
    13610	0	-0.78	11.25	3.96	6454	1004	77.11	84	9	15.67	212.74	100	11.13
    13829	0	-0.78	11.25	3.87	6620	1022	77.67	84	9	15.53	213.51	100	11.45
    14047	0	-0.78	11.25	3.88	6631	1022	77.81	84	9	15.53	214.3	100	11.27
    14282	0	-0.78	11.25	3.81	6775	1013	78.05	84	9	15.38	215.08	100	11.41
    14500	0	-0.78	11.25	3.81	6830	1004	78.68	84	9	15.38	216.67	100	11.26
    14719	0	-0.78	11.25	3.78	6849	1058	78.9	84	9	15.38	216	100	11.39
    14954	0	-0.78	11.25	3.76	6957	1004	78.52	84	9	15.38	216.39	100	11.36
    15172	0	-0.78	11.25	3.77	6983	1022	78.95	84	9	15.24	219.65	100	11.3

  6. #5
    Moderator Donkey's Avatar
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    What logger did you use?That AFR looks like it's from the front O2 sensor.I can tell from the 11.25's.
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  7. #6
    Registered User efmd3's Avatar
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    Quote Originally Posted by Donkey View Post
    What logger did you use?That AFR looks like it's from the front O2 sensor.I can tell from the 11.25's.
    look at the LC-1 column on the right.
    i posted the narrowband for comparison

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