websters03

recently my CEL popped on along with a reoccuring problem.

The Problem; as i drive whenever i hit vtech(3,500rpm +) the car stutters and seems to gasp for air not engaging the needed power. when this happens i ease off the gas. under 3.5k rpms the car drives smooth and normal

Codes Pulled;
P0141 - O2 sensor heater circuit malfun
bank 1 sensor 2

P1259 - manfact control, fuel air meter

after changing o2 sensor the o2 code was fixed. but the P1259 once cleared returns within 5secs of jus having key in ignition ("on" position). also replacing the o2 sensor did not fix the vtech problem.

Ive tried "search" put those with similar code never posted final outcome/solution/source of problem. would like to avoid dealer when possible and any insight would be great. thanks

thisisnotdave

You know, there's this thing called google...

Anyway that code is related to VTEC system itself. I didnt look to far into it but it could be the v-tec oil pres. sensor (which is located right next to the regular oil pres. sensor) or it could be the actual vtec solenoid, or something else.

Basically at this point I'd take it to the shop. It doesnt have to a be a dealer, and good mechanic with a manual would be able to fix the prob.

http://www.honda-tech.com/zerothread?id=1485884
That thread talks about it pretty extensively along with some of the things that can lead to the VTEC crapping out.

phee

iTrader: (5)

no vtec?!?!? im so so sorry man

6MTUA5

iTrader: (2)

I haven't had it for months

thisisnotdave

Haha, a honda/acura without vtec is like a bunch of sorority girls who wont put out.

thisisnotdave

Speaking of which, I haven't been keeping up since the summer started, what happened to the harness mod to get all that fun stuff workin?

crazyasiantl

iTrader: (7)

i thought Vtec kicked in around 5000 rpm..correct me if im wrong

thisisnotdave

For a type, its lower for a TL-P. which also has a lower redline.

websters03

thanks alot i checked out the thread and the OP's problem sounds exactly like mine. so i believe its the vtech pressure sensor. is this something i can do myself? how would i go about cleaning the sensor?

6MTUA5

iTrader: (2)

Still being developed and tested as we speak. Joe has been real busy doing some turbo projects so it's taking a little longer than expected.

Both are correct; the TL-P hits at 4500 or 4700, IIRC.

heyitsvu

iTrader: (1)

i had the same problem on my old prelude. should be the same system. sometimes the vtec solenoid's wires come loose. find the solenoid, pull the wires out, plug it back in, and give it a try. if that doesnt work. you might have to drain your oil in order to remove the solenoid to clean it. either way, good luck with your repairs and i hope all you guys get your vtec back soon, cuz youre missing out :Tomato:

thisisnotdave

The sensor itself should be easy enough to remove, much easier if you have a lift or at least ramps. I dunno about cleaning it tho, you may just have to replace it, its about 40-50 bucks online.