Jimmy

iTrader: (5)

I've been having an issue for probably 3 weeks now..

The setup: 1994 Integra RS, 2000 JDM ITR swap, Chipped p28 ecu

My car developed an issue on the 18th at my first HPDE.. I was having issues with VTEC not wanting to engage on my first session. I pitted and checked all my connections and the pins at the ecu connectors. My CEL came on and it was code 21.

CEL 21: VTEC SOLENOID VALVE

Again, I checked all my connections assuming it was my ground coming off the pressure switch, I grounded it at another place and I thought my problem was fixed..

Went out next session and it worked perfect. Session over the car sat for 20-30 minutes or so and I get back out on the track and in the middle of 3rd gear WOT the CEL came back on again. Same code, no VTEC.. Tracking my car with no vtec and 6800 rev limit FTL.

I couldn't figure out the issue so i said screw it and just continued on and finished thru out the day. Reset the ECU and on the fourth session the light didn't come on for 2-3 laps then popped on.. I cycled the ignition off/on and CEL gone. It didn't give me any issues for the rest of the day.

Tonight out driving, I engaged vtec.. Hit 3rd gear CEL pops on for the first time in 3 weeks.

I get home and pull the codes. CEL 21 & 22

Checked my wiring and everything still looks fine.

Searching i've read that it could actually be something in the ecu it's self, Seeing as how i don't know much about the p28 i'm running (who chipped it, etc)

I wonder if this is a possibility? Is there something I can look for?

Any help is appreciated

YFZpilot

is your oil pan dented?

Jimmy

iTrader: (5)

Nope. Actually in mint shape.. A buddy of mine mentioned it could of been cause I was out on the track and maybe I wasn't getting proper oil pressure. Oil level was perfect and didn't burn a drip during the HPDE.

h23V

computer might be the problem i'd try a new one with the same chip or maybe reflash the chip.

NAH2B

might be a stupid question but do you have a VAFC in the car?

Jimmy

iTrader: (5)

I can try that.

Nope.

Hatchg

Im having the same issue with a jdm b18c gsr, its code 20, and 21. My oil pan is not dented in but after filling with the recomended 4.25 quarts of oil it looked pretty high on the dipstick. Would too much oil cause this issue?

GSRcivicSon

i had almost the exact same problem with my car. problem was the ecu looking for the vtec oil pressure switch, and my motor doesn't have one. so i bypassed it and had no problems after that.