peeweezy

wow so i bought a 1997 civic ex shell with a nonvtec d16y7 and lastnight i come to find out that it's paired with a obd2 P72. WTF??

is there any logic to what im saying? was the previous owner crazy? or is he doing something forbidden?

the car doesnt rev over 5000rpm its horrible!! there's no acceleration whatsever and my gas mileage tres horrible!

would this ecu damage the d16y7 at all? im trying to find a P2E right now but if i get the right ECU how much would the motor benefit or would it still be the same crappyness

94EG8

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by peeweezy &raquo;</TD></TR><TR><TD CLASS="quote">im trying to find a P2E right now but if i get the right ECU how much would the motor benefit or would it still be the same crappyness</TD></TR></TABLE>

Well, the P72 should be throwing codes for vtec, its dumping a ton of extra fuel into the engine, and the ignition timing is probably a bit off, so yeah it should run a lot better with the proper ECU.

peeweezy

well then i better get the right ecu post haste then lol

94EG8

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by peeweezy &raquo;</TD></TR><TR><TD CLASS="quote">well then i better get the right ecu post haste then lol</TD></TR></TABLE>

Yep, just make sure you get a 5 speed ECU or you'll be throwing codes for the automatic transmission.

peeweezy

aww crap how do i tell if its a 5 speed ecu by reading the numbers on it??

what numbers would inform me if possible

94EG8

look at the 3 digits after P2E, the middle of the 3 will usually tell you, if its a 5,7 or 9 its generally an automatic ECU. otherwise its probably 5 speed.

peeweezy

so i should get a P2E ecu? is that going to be the correct ecu for me i wanna make sure before i go spending money on one. is that the only one or is there more ecu that are compatible with the d16y7

94EG8

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by peeweezy &raquo;</TD></TR><TR><TD CLASS="quote">so i should get a P2E ecu?</TD></TR></TABLE>

Yes, this is really about the only ECU choice as far as something that just plugs in and works correctly.

silverbullet9626

i just did a swap in my 96 dx i still have the ecu if you wish to buy it
forgot it is a p2e from a d16 y7 like yours worked a month ago before the swap

peeweezy

thanks for the offer

right after i got out of work tonight i had one of my buddies call me and he located a P2E for me finally drives great!

BUT

i solve one thing and another thing...im driving home i hit a bump on the highway and my muffler breaks off...now im sans MUFFLER!!! omfg it never ends with this car

pepsiDX20

It might just be a swapped case. Open it and look inside.

EGhatchguy

sounds like u bought someone elses project never was an EX made with a d16y7..

silverbullet9626

i know how you feel man i finished my swap thinking that i was completely done. went to get it inspected and it said error. come to find out i needed a usdm ecu and a obd2a-obd2b jumper. once i got it put on the scanner it said i had a bad knock sensor. i thought that the maddness would never stop

peeweezy

i bought someone elses problem... ARGH!!!

it never ends yeah

im still getting my IAC circuit failure code i dont even know what to do to fix it now it does weird 1500 - 2000 idling issue BLAH

and i STILL need to get to a shop and have them weld on a muffler lol

Relic1

D16Y7 = 3-wire AICV. make sure it has the 3-wire and not the typical 2-wire.

peeweezy

where do i check???

i know i looked under the hood and there are some wires by the dis cap that were hanging and look like there were cut

Relic1

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by peeweezy &raquo;</TD></TR><TR><TD CLASS="quote">where do i check???

i know i looked under the hood and there are some wires by the dis cap that were hanging and look like there were cut</TD></TR></TABLE>
*smacks forehead* (not meant at you, at the car)
are you sure you want to tackle someone else's "project"??
I say that because it seems like they grabbed the Y8 out of the car, threw in the Y7, hacked it so it would work then dumped it.

the AICV is on the back of the intake manifold. held on by two bolts, it's always looked like a small wiper motor to me.
Reach in to the driver's side of it and locate the plug that's on the under side, check for three wires and not two.
Granted that doesn't mean that there are three wires run to the ECU, but it's a start.

peeweezy

hmm imma have to check tonight when i get the chance. i hope its fine argh but if it was then the code wouldnt be popping up SIGH

peeweezy

well i checked the wire going into that AIAC motor you told me about and yeah its 3 wires. that still doesnt solve my idle problem though

my cousin told me that i should try taking it off and cleaning it with carb cleaner or something will that do anything?

im still getting a P-code

EF_9

iTrader: (1)

dam gsr ecu haha i have a manual 96-98 p2e ecu LMK

Relic1

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by peeweezy &raquo;</TD></TR><TR><TD CLASS="quote">well i checked the wire going into that AIAC motor you told me about and yeah its 3 wires. that still doesnt solve my idle problem though

my cousin told me that i should try taking it off and cleaning it with carb cleaner or something will that do anything?

im still getting a P-code</TD></TR></TABLE>
Cleaning the AICV may help. All though with cut wires in the harness I'm guessing you have a wiring issue.

Unfortunately the right sensor on the manifold with the right plug doesn't mean that it's wired correctly.
unplug the sensor, turn the key to Run (II) but leave the engine off.
check for 12V on the yellow/black wire (center pin)
turn the ignition off, make sure that the black/blue wire is connected to A14 of the ECU
make sure that the orange wire is connected to A13 of the ECU.

If you clean the valve, and make sure that the wiring is right, replace the AICV.

peeweezy

damn sounds so complicated but ill do that tonight.

i miss my accord that thing never had any problems lol