DoubleAron42
New Member
Ok so I'm freshly new at this forum stuff other than doing a little reasearch. This is number 1 post for me so forgive me if I've done it incorrectly or what-not. This swap is pissing me off to the point where I just want to get the damn thing out of my garage!
But anyway here is the story. I agreed to swap a buddy's H22A4 out of his 99 Prelude for a 96 JDM H22A. I did a little reasearch on this and found that it is pretty much a direct swap other than doing a little re-wiring so the USDM wiring harness will accept the CKP and TDC sensors in the distributor. ( Didn't want to pull apart JDM Engine to swap oil pumps) Essentially I cut all the wires on the JDM Distributor and soldered on the USDM plugs (after doing a little wiring schematic research)(also would like to use US external coil). Then I made a jumper by soldering lengthened wire to the male end of the CKP/TDC connector and running it to the distributor. At the distributor I soldered the four lengthed wires to both sensors according to wiring schematic comparisons found on the web.
JDM US
CKP - BLU/GRN---------------- BLU
BLU/YEL-----------------WHT
TDC - ORN/BLU-----------------GRN
WHT/BLU-----------------RED
Parts from US put on JDM -
Alternator
A/c compressor
Fuel injectors
VTEC Solonoid & Housing
May be forgetting a few things....but i know I DIDN'T change the Knock sensor because the US one broke and everything plugged in ok.
Got everything hooked up and double checked. Went to start the car and it wouldn't start. Irregular/out of time/ weak spark. Preformed a spark test by pulling all four plugs out, connecting them to the plugwires and laying them on the valve cover. I turned the engine over while a buddy positioned the distributor so that all four plugs seemed to be gettin excellent spark at their given time. Tightened distributor in exact position and re-installed plugs and wires. No spark again (verified through another spark test). Replaced external coil, cap, button and put in a brand new battery. Still no spark. Checked power to coil-ok Checked plug gaps-ok. Checked power and gound to ICM- ok.Triple checked and cleaned grounds. Double checked fuses...
Its almost like the computer is ordering it not to spark. could it be bad TDC/CKP sensors? they look in very good shape. I've read that a MAIN Relay could maybe be a cause but I am gettin fuel. Does anyone know about a bench test for the ICM?
I cant figure out why it won't spark. If anyone has any helpful advice/information about this it would be grately appreciated. thanks
But anyway here is the story. I agreed to swap a buddy's H22A4 out of his 99 Prelude for a 96 JDM H22A. I did a little reasearch on this and found that it is pretty much a direct swap other than doing a little re-wiring so the USDM wiring harness will accept the CKP and TDC sensors in the distributor. ( Didn't want to pull apart JDM Engine to swap oil pumps) Essentially I cut all the wires on the JDM Distributor and soldered on the USDM plugs (after doing a little wiring schematic research)(also would like to use US external coil). Then I made a jumper by soldering lengthened wire to the male end of the CKP/TDC connector and running it to the distributor. At the distributor I soldered the four lengthed wires to both sensors according to wiring schematic comparisons found on the web.
JDM US
CKP - BLU/GRN---------------- BLU
BLU/YEL-----------------WHT
TDC - ORN/BLU-----------------GRN
WHT/BLU-----------------RED
Parts from US put on JDM -
Alternator
A/c compressor
Fuel injectors
VTEC Solonoid & Housing
May be forgetting a few things....but i know I DIDN'T change the Knock sensor because the US one broke and everything plugged in ok.
Got everything hooked up and double checked. Went to start the car and it wouldn't start. Irregular/out of time/ weak spark. Preformed a spark test by pulling all four plugs out, connecting them to the plugwires and laying them on the valve cover. I turned the engine over while a buddy positioned the distributor so that all four plugs seemed to be gettin excellent spark at their given time. Tightened distributor in exact position and re-installed plugs and wires. No spark again (verified through another spark test). Replaced external coil, cap, button and put in a brand new battery. Still no spark. Checked power to coil-ok Checked plug gaps-ok. Checked power and gound to ICM- ok.Triple checked and cleaned grounds. Double checked fuses...
Its almost like the computer is ordering it not to spark. could it be bad TDC/CKP sensors? they look in very good shape. I've read that a MAIN Relay could maybe be a cause but I am gettin fuel. Does anyone know about a bench test for the ICM?
I cant figure out why it won't spark. If anyone has any helpful advice/information about this it would be grately appreciated. thanks