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omega53513 · 04-01-2007, 11:26 PM

Purchased a prelude, didn't expect it to be this bad.

Stock prelude was: 93 Prelude Si model (2.3 DOHC engine).

Engine and manual trans were swapped from 99 acura 2.3 CL (2.3 Vtec SOHC engine).

Now the problems with this 2.3L Vtec SOHC engine I have:

ECU - 93 prelude "S" model NON-VTEC 2.2L SOHC computer
destributor - 93 prelude "S" model
Trouble code #9
Engine cut off at 5400rpm

Can I run a Vtec engine with a non-vtec distributor?

Can I use something else than engine computer to enable the Vtech?

Why does my engine cuts off at 5400? Can it be attributed to the the trouble code #9?

Is trouble code #9 is most likely top sensor on by distributor gone bad (as I can see a crack on the top sensor)?

If I must have a computer for my Vtec, can I buy some kind of wiring harness adapter to allow my OBD I harness to connect to OBD II computer, so that I could use stock 2.3cl computer?

Will the computer work from up to 96 honda accord 2.2L Vtec SOHC, or I will need to rewire the whole thing?

I have posted some questions previously on Preludepower.com - Powered by vBulletin and they helped me identify which computer I use.

Thanks to every one who will respond!

powerdriverh22 · 04-02-2007, 11:57 AM

your whole problem lies in the computer. you have to have a vtec computer to make it engage. the f22 non-vtec ecu doesnt know what vtec is. so find the correct f23 ecu and get a obdII-obdI conversion harness. then the car will go to red line, and have vtec.

omega53513 · 04-02-2007, 03:33 PM

Can you please point me to the web site, or someone who sells the conversion. I totally don't mind purchaing it, as long as its not the price of the new engine.
Thanks.

powerdriverh22 · 04-03-2007, 09:54 AM

Rywire - Online Store

im not sure if the motor is obd2a or obd2b so you will need to find that out before purchasing

04-01-2007, 11:26 PM	#1
omega53513 Junior Member Join Date: Apr 2007 Posts: 2 iTrader: 0 / 0% Rep Power: 0	Need Help with Prelude engine swap. Purchased a prelude, didn't expect it to be this bad. Stock prelude was: 93 Prelude Si model (2.3 DOHC engine). Engine and manual trans were swapped from 99 acura 2.3 CL (2.3 Vtec SOHC engine). Now the problems with this 2.3L Vtec SOHC engine I have: ECU - 93 prelude "S" model NON-VTEC 2.2L SOHC computer destributor - 93 prelude "S" model Trouble code #9 Engine cut off at 5400rpm Can I run a Vtec engine with a non-vtec distributor? Can I use something else than engine computer to enable the Vtech? Why does my engine cuts off at 5400? Can it be attributed to the the trouble code #9? Is trouble code #9 is most likely top sensor on by distributor gone bad (as I can see a crack on the top sensor)? If I must have a computer for my Vtec, can I buy some kind of wiring harness adapter to allow my OBD I harness to connect to OBD II computer, so that I could use stock 2.3cl computer? Will the computer work from up to 96 honda accord 2.2L Vtec SOHC, or I will need to rewire the whole thing? I have posted some questions previously on Preludepower.com - Powered by vBulletin and they helped me identify which computer I use. Thanks to every one who will respond!

04-02-2007, 11:57 AM	#2
powerdriverh22 Senior Member Join Date: Jul 2005 Location: spfld, mo Posts: 720 iTrader: 0 / 0% Rep Power: 16	your whole problem lies in the computer. you have to have a vtec computer to make it engage. the f22 non-vtec ecu doesnt know what vtec is. so find the correct f23 ecu and get a obdII-obdI conversion harness. then the car will go to red line, and have vtec. __________________ 94 Accord, JDM h22a, bpi velocity stack, euro r tb, ported head, ss flat valves, s2p1 cams, bold fab header (fs), 3in exhaust

04-02-2007, 03:33 PM	#3
omega53513 Junior Member Join Date: Apr 2007 Posts: 2 iTrader: 0 / 0% Rep Power: 0	prelude Can you please point me to the web site, or someone who sells the conversion. I totally don't mind purchaing it, as long as its not the price of the new engine. Thanks.

04-03-2007, 09:54 AM	#4
powerdriverh22 Senior Member Join Date: Jul 2005 Location: spfld, mo Posts: 720 iTrader: 0 / 0% Rep Power: 16	Rywire - Online Store im not sure if the motor is obd2a or obd2b so you will need to find that out before purchasing __________________ 94 Accord, JDM h22a, bpi velocity stack, euro r tb, ported head, ss flat valves, s2p1 cams, bold fab header (fs), 3in exhaust

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Need Help with Prelude engine swap.