93 Civic ECU explanation and help
05-03-2016, 06:30 PM
#26
Re: 93 Civic ECU explanation and help
Would this work:
Run a jumper wire directly from the O2 connector terminal (that connects to the org/blk wire) to the A6 port on the ECU to see if it turns the light off
Run a jumper wire directly from the O2 connector terminal (that connects to the org/blk wire) to the A6 port on the ECU to see if it turns the light off
If this works, then there is a problem in the circuit, and if not, there is a problem in the ECU.
Does this make sense?
Does this make sense?
This is also a worthwhile test.
05-03-2016, 06:52 PM
#27
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Re: 93 Civic ECU explanation and help
I did this test:
"check continuity between the heat sensor end of the orange/blk and the ecu side of the orange/blk. If there is continuity, there is a problem with the ECU, if not, there is a problem, with the circuit."
There IS continuity (.4ohms) between the pigtail end of the O2 heat sensor and the connector end (A6). This leads me to believe that there is likely an issue with the ECU.
RonJ, you cleeeeeearly know a lot more about this, so please let me know if this is a sound deduction. THANK YOU so much for your help.
Also, who's in your avatar, btw?
"check continuity between the heat sensor end of the orange/blk and the ecu side of the orange/blk. If there is continuity, there is a problem with the ECU, if not, there is a problem, with the circuit."
There IS continuity (.4ohms) between the pigtail end of the O2 heat sensor and the connector end (A6). This leads me to believe that there is likely an issue with the ECU.
RonJ, you cleeeeeearly know a lot more about this, so please let me know if this is a sound deduction. THANK YOU so much for your help.
Also, who's in your avatar, btw?
05-03-2016, 07:11 PM
#28
Re: 93 Civic ECU explanation and help
I did this test:
"check continuity between the heat sensor end of the orange/blk and the ecu side of the orange/blk. If there is continuity, there is a problem with the ECU, if not, there is a problem, with the circuit."
There IS continuity (.4ohms) between the pigtail end of the O2 heat sensor and the connector end (A6). This leads me to believe that there is likely an issue with the ECU.
RonJ, you cleeeeeearly know a lot more about this, so please let me know if this is a sound deduction. THANK YOU so much for your help.
"check continuity between the heat sensor end of the orange/blk and the ecu side of the orange/blk. If there is continuity, there is a problem with the ECU, if not, there is a problem, with the circuit."
There IS continuity (.4ohms) between the pigtail end of the O2 heat sensor and the connector end (A6). This leads me to believe that there is likely an issue with the ECU.
RonJ, you cleeeeeearly know a lot more about this, so please let me know if this is a sound deduction. THANK YOU so much for your help.
Also, who's in your avatar, btw?
https://en.wikipedia.org/wiki/K-PAX_(film)
05-12-2016, 12:19 PM
#35
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Re: 93 Civic ECU explanation and help
If this motor has been swapped, sometimes folks save costs by using the o2 from the old motor into the new one. Sometimes they are not the same part number, so they might operate differently or send the incorrect signal. If that car did in fact come with that motor, those guys helping you track down continuity in the circuits are your best options. Best of luck!
I had an o2 problem, but my fix was chipping and tuning the ecu which deleted the use of the o2 lol. Not a fix all, tuning was just next on my build to do list.
I had an o2 problem, but my fix was chipping and tuning the ecu which deleted the use of the o2 lol. Not a fix all, tuning was just next on my build to do list.
05-12-2016, 12:21 PM
#36
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Re: 93 Civic ECU explanation and help
Oh and yeah, look in the ecu itself. My old one took a pooh and one of the resistors in the circuit board fried. Car ran for 4 minutes till the ecu got hot and then the motor died.
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