Check engine light at high revs in 3rd

[RandyRhydah]

As above, after installing my blox intake manifold, 68mm tb, 2.5inch cooler piping, big intercooler and new dump pipe my car is having a check engine light come on around 5000 - 6500 rpm in third gear. It comes on between that bracket and stays on for 2 or so seconds after i let off the throttle.

Does not do it in first or second and i haven't tried it in fourth or fifth because the highest speed limit here is 130.

It isnt a boost issue because it is doing it at 10 psi, the actuator pressure which is 7 psi and i even unhooked the actuator rod so the wastegate was always open and still had the issue.

Also thought it could have been a vtec issue, so i disabled vtec and the light still came on.

Tuned with a power FC and i took my tuner for a drive this afternoon to show him. He said that the ecu is showing nothing wrong, no knocks, duty cycle is fine and no sensor errors either.

TPS is brand new and i replaced the O ring for the map sensor and gave it a blow out at the same time.

The only other thing currently wrong with the car is a powers steering leak and i doubt that the powerFC will give a check engine light due to a low power steering fluid pressure.

Any help would be awesome

Cheers

Roy

[RandyRhydah]

Took the car for a drive with 5 degrees timing pulled over the whole map and 20% more fuel, still no luck.

only CEL on stock ecu is primary o2 heater and it has had that for over 2 years now

Ozhonda has 3 or more reputable honda tuners... point me in the right direction guys

[Lukezen27]

Took the car for a drive with 5 degrees timing pulled over the whole map and 20% more fuel, still no luck.

only CEL on stock ecu is primary o2 heater and it has had that for over 2 years now

Ozhonda has 3 or more reputable honda tuners... point me in the right direction guys

Can't you short the ECU to find what error code your getting straight after the light comes on?

The code should still show up before you turn the ignition off..

What motor?

I'm guessing B16/B18 odb1 ECU

Power FC are dodgy IMO

Tried unplugging the Power FC and going for a quick drive with just the OEM ECU connected bearing in mind not to hit it hard

The following are errors I had over the last 7 years lol

17 (http://b16a2.kicks-ass.net/diy/pgmfi/mil/pgmfi-code-17.gif) VSS (http://www.ozhonda.com/forum/showthread.php?t=68441) - Vehicle Speed Sensor (fixed by removing the VSS sensor from the box and cleaning while being very careful not to loose the tiny pin that sits between the sensor and the electrical connection)

1 (http://b16a2.kicks-ass.net/diy/pgmfi/mil/pgmfi-code-1.gif) O2A (http://www.ozhonda.com/forum/showthread.php?t=69868) - Oxygen sensor #1 (turned off inside Hondata or just replace)
41 (http://b16a2.kicks-ass.net/diy/pgmfi/mil/pgmfi-code-41.gif) PO2H (http://www.ozhonda.com/forum/showthread.php?t=68798) - Primary Oxygen Sensor Heater (turned off inside Hondata or just replace)

21 (http://b16a2.kicks-ass.net/diy/pgmfi/mil/pgmfi-code-22.gif) VTS (http://www.ozhonda.com/forum/showthread.php?t=68997) - VTEC Spool Solenoid (From memory I spliced with the VTP wire and grounded) redundant tech anyway and was removed completely from Honda's newer ECUs

7 (http://b16a2.kicks-ass.net/diy/pgmfi/mil/pgmfi-code-7.gif) TPS (http://www.ozhonda.com/forum/showthread.php?t=67309) - Throttle Position Sensor (Fixed by replacing)

Over the years I had a lot of codes that I couldn't work out but most were loose wiring dodgy sockets after years of hacking and changing :)

Rewired the whole loom before selling and no errors after that

[RandyRhydah]

threw the stock ecu in this morning and po2h is all im throwing. i haven't had the o2 sensor enabled for over 12 months with no issues so that wasnt an issue.

My tuner says hes never seen the power fc throw a solid light like mine is. just a massive headache

i guess i can just get it on the dyno and try to reproduce the issue with all the gadgets plugged in and see whats up with it

[Lukezen27]

threw the stock ecu in this morning and po2h is all im throwing. i haven't had the o2 sensor enabled for over 12 months with no issues so that wasnt an issue.

My tuner says hes never seen the power fc throw a solid light like mine is. just a massive headache

i guess i can just get it on the dyno and try to reproduce the issue with all the gadgets plugged in and see whats up with it

Small thing like this are the most annoying part of moding cars if ya ask me...

At lest with a big or obvious problem you can plan what needed to fix it but with little things like that here and there i can drive ya mad lol

[RandyRhydah]

Haha, yeah. this is including my power steering pump leaking everywhere through an invisible hole

[Lukezen27]

Haha, yeah. this is including my power steering pump leaking everywhere through an invisible hole


Yeah hate the EG steering pumps

They ether make that annoying grinding sound or leak once you’ve tried to repairing em!!

You can buy the pump internals but you need to torque down case bolts exactly!

[RandyRhydah]

yeah hopefully it doesnt need a rebuild, just fix the leak and hope no damage is done.


bloody cars :( lol

[Lukezen27]

yeah hopefully it doesnt need a rebuild, just fix the leak and hope no damage is done.


bloody cars :( lol

Yeah that's nothing

Looks at what some foker did to my car Sat morning

http://www.ozhonda.com/forum/showthread.php?129818-Sydney-EP3-thread/page103

:(

[RandyRhydah]

damn dude it doesnt end does it.. buy a newer car which is more reliable so it doesnt break down and someone runs into it, feeling for you man.

GOOD NEWS THOUGH! its not a power steering leak

BAD NEWS THOUGH! its a pinhole in the fking turbo feed line... you wouldent have an old feed line i can buy from you? i cant find the line itself and all local sellers want 60+ for the whole kits which i have 2 of already...

[aaronng]

Are you sure that you have not gone beyond the MAP sensor's range limit of 11psi?

[Lukezen27]

damn dude it doesnt end does it.. buy a newer car which is more reliable so it doesnt break down and someone runs into it, feeling for you man.

GOOD NEWS THOUGH! its not a power steering leak

BAD NEWS THOUGH! its a pinhole in the fking turbo feed line... you wouldent have an old feed line i can buy from you? i cant find the line itself and all local sellers want 60+ for the whole kits which i have 2 of already...

Actualy I did have one somewhere but I can seem to find it...

PM Adam cracker (http://www.ozhonda.com/forum/member.php?14917-cracker) I think I might have given it to him in with all the other extras

[RandyRhydah]

no aarong it is doing it at 7 psi also, that was the first thing i checked and will do luke cheers.

[bennjamin]

what about engine knock (excessive) at that particular rpm or load ?

[RandyRhydah]

nope, knock is hovering around 30 ish when a big knock with the power fc is 45<.

Also the knock warning is a flashing CEL not a solid one.

i am starting to think it might be an oil pressure warning due to finding that pin hole in the turbo feed line which is inline with the oil pressure sensor. Will a honda flash a cel for abnormal oil pressure before it flashes the actual oil warning light without the standard ecu in?

[bennjamin]

oil pressure is the oil pressure light. Seen at start up , high g corners or low oil in general...

[RandyRhydah]

ahh ok, so the check engine light is still the mystery...

[bennjamin]

does the PFC offer a histogram of most or all maximum levels shown by the engines sensors ? (max knock , temp etc)
This issue is obviously intermittent and if not addressed it could lead to big time problems/failure

[RandyRhydah]

yeah it does, it shows nothing out of the normal

and thats what im worried about, it wouldent throw the CEL if there was nothing wrong with it.

[Marmo.]

When my oil was low it used go throw the check
Engine light aswell as low oil light after a thrash

[RandyRhydah]

Hmm, we have the same engine aswell. I wont get my hopes up though

[rotary_snail]

Engine light only gets thrown for faulty emission(related) equipment. So could be a misfire, failed cat, oxy sensor, any form of cold start or air injection, throttle sensor, ect ect.

[RandyRhydah]

No cat, no oxygen sensor, not cold start, new throttle sensor, what do you mean by air injection??

[RandyRhydah]

after a google search i found that that isnt it either..

[Limbo]

on PFC usually only a couple of things
http://www.paulr33.com/powerfc-faq/powerfc-faq.htm#32
Have a read.
Most likely knock sensor is going off at high RPM, either a bad tune/value or you may also have a faulty knock sensor

[RandyRhydah]

I've read that a few times, tune is very safe and i have pulled the timing all the way back and added fuel and it was still coming on so there is no way its knock.

And it is a solid CEL, so it isnt a usual power fc one where it flashes.

[Benson]

Maybe swtich to a hondata s300?

[RandyRhydah]

Found the issue on the dyno last night.

The throttle butterfly on my blox 68mm was over rotating and sending my TPS haywire. fixed her up and she is all good now :)

Was a first for my tuner but its good to keep in mind