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96 Discovery misfire cyl #4 per cheap obd device. Replaced…

96 Discovery misfire cyl...

96 Discovery misfire cyl #4 per cheap obd device. Replaced plugs, removed and proved injectors operate still misses on #4. Wonder about some position sensor.

Mechanic's Assistant: Which particular sensor are you asking about? And have any trouble codes been triggered?

Yes the code said "misfire and something about o2 sensor. I did not write down any code numbers.

Mechanic's Assistant: Are you fixing your Discovery yourself? What have you tried so far?

Yes, I changed the plugs, I substituted an extra coil pack I had, and I tested the fuel injectors.

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

No, I'm good

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3/22/2018
Jim
Jim, ASE Certified Technician
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Can you send me the 2 codes?

Jim
Jim, ASE Certified Technician
Category: Car
Satisfied Customers: 1,519
Experience: California smog licensed, ASE ceritied in L1, A6, A8 for over 30 years professionally
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Customer reply replied 3 months ago
Well I can't because I still have the injectors out of the engine. I might be able to get them back in tomorrow and run the car. Are you saying there is a number on the codes. I only saw the "misfire" and "O2" failure. I hope this doesn't complicate the transaction.
Customer reply replied 3 months ago
I am here
Customer reply replied 3 months ago
That's fine. I'm just assuming that it must be some camshaft position sensor or other sensor that isn't letting cylinder #4 spark the plug and didn't want to just go buy something. I forgot to say that I changed the coil pack with one I had and there was no change.
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