ecu swap require a flash?
07-18-2013, 08:12 AM
#1
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ecu swap require a flash?
I have a 00 civic dx where a 96 d16y8 motor and transmission have been swapped in. the wiring harness was switched to obd2b and ecu switched to a p292 -a92. the cel is now on for sall the vtec sensors. Is there a flash or tune required when swapping ecus?
07-18-2013, 08:47 AM
#7
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Re: ecu swap require a flash?
in order for it to work, you need to switch the engine harness, *** well as the cabin harness, plus a dash and all that goes with it from a 99-00 civic excluding HX model. 96-98 (obd2a) and 99-00 (obd2b) are completely different wiring.
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07-18-2013, 09:33 AM
#10
Re: ecu swap require a flash?
You guys aren't understanding what the OP's setup is.
He has an OBD2B car
He swapped an OBD2A engine into it.
He is using an OBD2B harness on the engine.
He is using an OBD2B ECU with this engine.
His car is already OBD2B and he's using an OBD2B ECU, there are no changes needed.
Here's the kicker.... His car is a DX and the new engine is from an EX with VTEC. His new ECU is also from an EX which has VTEC and now he's throwing codes for all the VTEC components.
Obvious answer: He needs to wire up VTEC.
He has an OBD2B car
He swapped an OBD2A engine into it.
He is using an OBD2B harness on the engine.
He is using an OBD2B ECU with this engine.
His car is already OBD2B and he's using an OBD2B ECU, there are no changes needed.
Here's the kicker.... His car is a DX and the new engine is from an EX with VTEC. His new ECU is also from an EX which has VTEC and now he's throwing codes for all the VTEC components.
Obvious answer: He needs to wire up VTEC.
07-18-2013, 09:37 AM
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Re: ecu swap require a flash?
You guys aren't understanding what the OP's setup is.
He has an OBD2B car
He swapped an OBD2A engine into it.
He is using an OBD2B harness on the engine.
He is using an OBD2B ECU with this engine.
His car is already OBD2B and he's using an OBD2B ECU, there are no changes needed.
Here's the kicker.... His car is a DX and the new engine is from an EX with VTEC. His new ECU is also from an EX which has VTEC and now he's throwing codes for all the VTEC components.
Obvious answer: He needs to wire up VTEC.
He has an OBD2B car
He swapped an OBD2A engine into it.
He is using an OBD2B harness on the engine.
He is using an OBD2B ECU with this engine.
His car is already OBD2B and he's using an OBD2B ECU, there are no changes needed.
Here's the kicker.... His car is a DX and the new engine is from an EX with VTEC. His new ECU is also from an EX which has VTEC and now he's throwing codes for all the VTEC components.
Obvious answer: He needs to wire up VTEC.
07-18-2013, 10:28 AM
#17
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Re: ecu swap require a flash?
Im gonna throw a guess on this, but Im betting the OP needs to add the wiring that goes from engine harness to cabin/ecu harness for VTEC.
07-18-2013, 11:02 AM
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07-18-2013, 02:37 PM
#23
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Re: ecu swap require a flash?
Ok cleared it again and only knock sensor and o2 sensor are showing up. I replace the knock sensor already because it was broken and noticed it during the wiring harness swap. also now the vehicle seems to accelerate by itself up to like 40 after driving it for a while and getting it to operating temperature
Last edited by smeags; 07-18-2013 at 03:23 PM.
