weird vtec timeing help!

lil_italy · Post by **lil_italy** » Sun Jan 08, 2012 8:07 pm

i just bought a 98 civic ex with a d165y. the issue im havin is that my vtech is kicking in at 5500 rpm and not 4300-4500 rang. it make the car poopy slow untill vtec kicks in then its a hole nother beast. but also im having a idle surge at 1600 rpm . iv changed idle corntrol valve, tps, cleaned everything and still nothing. dose anyone have an idea wat could be going on ie computer or other sensor issues? the surge is only at 1600 rpm with little bit of throttle. wat do i check next

JustRob · Post by **JustRob** » Sun Jan 08, 2012 8:45 pm

Are you using the P2N ECU for the D16Y5?

delslo · Post by **delslo** » Sun Jan 08, 2012 9:34 pm

My Vtech kicks on when I tap the on button...

lil_italy · Post by **lil_italy** » Sun Jan 08, 2012 10:47 pm

not to sure i opened it up and was looking to see if it was chipped but it dont have any were to put a chip in seems like
its prolly the y5

JustRob · Post by **JustRob** » Sun Jan 08, 2012 10:54 pm

lil_italy;283093 wrote:not to sure i opened it up and was looking to see if it was chipped but it dont have any were to put a chip in seems like
its prolly the y5

There should be a tag on the side of the ECU. It should have a part number reading 37820-xxx-xxx. What are the letters and numbers in the 'x' spot?

lil_italy · Post by **lil_italy** » Mon Jan 09, 2012 4:45 pm

its 37820-P2P-A81

HardCore97 · Post by **HardCore97** » Mon Jan 09, 2012 10:38 pm

that is the original stock EX ecu then

JustRob · Post by **JustRob** » Tue Jan 10, 2012 12:49 am

lil_italy;283136 wrote:its 37820-P2P-A81

Yep, that's the wrong ECU. The D16Y5 is a pretty unique engine design and the matching ECU is a must have item. Is the car automatic or manual?

Edit: I assume an automatic based on your current ECU part number. Is that correct?

lil_italy · Post by **lil_italy** » Wed Jan 11, 2012 2:18 am

manual but i just got a 94 preude with the h23a1 im prolly gunna drop in it.

lil_italy · Post by **lil_italy** » Wed Jan 11, 2012 2:19 am

i would never buy an automatic civic