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Discussion Starter #1
i have a 2000 civic vp d16y7 automatic i blew a rod threw the oil pan so i decided to buy a parts car the car i bouhght is a 98 d16y8 manual i have done the swap already (motor and tranny) and now the car woulnt start.... i used the harness from the 98 d16y8 and ( left it on the motor during swap ) now i have both ecu's i have the autos p2e and the manuals vetech p2p when either of these are plugged in the key is turned and i cant hear the fuel pump pressuriszing no fuel = no start i know the 2000 is obd2b and the 98 harness is obd2a do i need a conversion harness from the 98s motor to the 98 ecu? or what could be my problem also when the 98 ecu is plugged in i have an extra grey plug just hanging i also get the park light and the 2nd gear light on the dash illuminating ?
please help ive searched fourms and i cant find anything that leads me in the right direction
also will try to add pictures if i did not explain very well just let me know
 

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This should be in gentech.

Use the 2000 engine harness. Did you do an auto to manual conversion?
 

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i thought vetech wouldnt work on the 2000 harness ? and yes
VTec would need to be wired in to the 2000 harness. You can use either a obd2b y8 ecu or a 1996-98 y8 ecu but you will need an ecu step down harness from obd2b to obd2a.

Now for the auto to manual conversion. Did you do the bypass wiring?
 

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were would that be rewired into ? and i have the 98's ecu that will work
and bypass for what?
VTec needs to be wires from the sensors to the ecu plugs.

The 98 ecu will only work with the step down harness.

There's wires at the auto shifter plug that need to be jumped so the car will start and a few other things.
 

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Discussion Starter #7
so i cant use the 98's harness then? and the 2000's ecu is for an auto does tht affect it or vetech thats why i was gonna use the y8 ecu
, and yea i got it bypassed
 

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You can't use the 98 harness on the 00 car. You need to use the 00 harness on the 00 car.

If its a y8 ecu you can use it but you will have codes for the auto stuff that's not hooked up. Shouldn't effect how the motor runs.

You will need to wire VTec to the 00 harness if there not there all ready.
 

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Discussion Starter #9
yea the 00 harness came off of a non vetech how do i rewire it and no the 00 ecu is off a y7 so i have to use the y8 ecu right?
 

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Discussion Starter #10
the 00 harness also dosent have the same intake manifold plugs could i just buy a 99-00 d16y8 engine harness on the y8 with the step down for the ecu ?
 

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the 00 harness also dosent have the same intake manifold plugs could i just buy a 99-00 d16y8 engine harness on the y8 with the step down for the ecu ?
What difference between your harnesses?

The only thing I know that's different is the distributor plugs. 99-00 sohc use an 8 wire distributor plug where's the 96-98 sohc use a 10 wire plug. Now the 99-00 si dohc uses the same 10 wire plug as the sohc.

Iacv plugs are different to. One uses a 3 wire and one is a 2 wire
 
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