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Old 06-24-2003, 05:06 PM   #1
SHUMAX
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Default What does this mean F23A1 or F23A4

Which engine do I have if I have the 2.3 litre 4cylinder in a 2000 Accord EX with a 5 spd tranny, sold in the U.S.

I need to know to order tuneup parts.

Thanks,
Curt B. Shumaker

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Old 06-24-2003, 05:10 PM   #2
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Default Re: What does this mean F23A1 or F23A4 (SHUMAX)

F23A1, thats what i have in my 2000 ex coupe 5 spd
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Old 06-24-2003, 05:13 PM   #3
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Default Re: What does this mean F23A1 or F23A4 (LeonZ)

Where can I look to be sure that's what I have?
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Old 06-24-2003, 06:05 PM   #4
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Default Re: What does this mean F23A1 or F23A4 (SHUMAX)

ah..god almightly..there's a post about it like two days ago.

f23a1=vtec 6th gen four banger
f23a4=vtec 6th gen four banger with ulev(california)
f23a5=non vtec 6th gen four banger

it's a engine code so where you can find out which you have???
it's written on your engine, that's why it's call engine code.

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Old 06-24-2003, 06:49 PM   #5
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Default Re: What does this mean F23A1 or F23A4 (SHUMAX)

FWIW - tuneup parts should be the same for both those motors.
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Old 06-24-2003, 07:04 PM   #6
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Default Re: What does this mean F23A1 or F23A4 (SHUMAX)

You really don't even have to look at the code. Just look at the engine cover. A F23A1 will have "VTEC" on it, and a F23A4 will have "ULEV-VTEC" on it. The F23A4 is 2 hp/tq less than the F23A1. For what reason, I don't know. All I know is that I got stuck with one of them.
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Old 06-25-2003, 11:15 AM   #7
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Default Re: What does this mean F23A1 or F23A4 (jweller)

Thanks for the feedback. No thanks to you on the attitude. I am trying to gather information on a car that is 400 miles away. Excuse me for asking a question on a public forum. Oh yea, I did search...for about 20min. and wasn't able to come up with much.

Again, thanks for the detailed info.
Curt B. Shumaker
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