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Check engine light light

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Old Apr 5, 2025 | 10:04 PM
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Default Check engine light light

‘82 crossfire e l comes on after the car gets up to temp. Shut car off light goes out. New O2 sensor, new cts. Suggestions?
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Old Apr 5, 2025 | 11:29 PM
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Have you pulled the codes? What code or codes is it throwing?
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Old Apr 6, 2025 | 12:05 PM
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Yes. use a jumper wire and OBD-I connector to obtain stored trouble codes. That will guide you to the cause of your problem. Since the light goes out when you shut engine down and doesn't come on with the next start, it is not a CRITICAL issue. But it should b diagnosed ASAP to determine cause so that repair can be made.It could be a faulty temp sensor or other relatively simple issue.
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Old Apr 6, 2025 | 02:27 PM
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Originally Posted by 4-vettes
Have you pulled the codes? What code or codes is it throwing?
13 for an O2 .
I am assuming that whenever it gets up to operating temperature, it goes to closed loop. Timing is now 10 BTDC from 5. Timing advance with throttle. Vacuum at idle is 18
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Old Apr 6, 2025 | 05:34 PM
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When you installed new sensor did you check voltage at connector?
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Old Apr 6, 2025 | 06:53 PM
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Originally Posted by MelWff
When you installed new sensor did you check voltage at connector?
Not yet, my multimeter is broken.
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