Hi guys! i really need help! I had the P0401 code and like i should do, i cleaned my EGR chamber, ports AND egr Valve and gasket. pretty much all I should do.

However I did not use a shop vac of any sort i jus sprayed carb cleaner through the ports to loosen up the carbon buildup. The amount of carbon buildup was RIDICULOUS almost full to the top in the chamber.

Anyway I made sure the ports and everyhting were clear and clean(with a allen key and carb cleaner), however IM SURE some/most of the carbon has fallen into the intake manifold.

So i take it for a little spin - 1st gear is as powerful as it can be plus im getting ALOT of torque steer and power when i hit vtec. i noticed it hits in earlier which is perfect

BUT - 2nd gear rolling to full throttle i notice that the rev bar kinda SLOWS down significantly and hesitates at around 4000rpm to 5500rpm. When it hits vtec however everything is normal and all power.

I am thinking is this a result of carbon buildup falling into the intake?

NOTE: I DID NOT take it for a spin on the motorway(as scotty kilmer suggested on youtube - but im not sure if that would sort the problem). Would that help?

Guys thanks for reading. I will post up a video if anyone would like a visual of whats happening.

 

Did you clear the code ? Did it come back ?

 

Yeah i cleared it and no sign of it coming back. Its wierd since it happens on rolling gear then FULL throttle on gear 2. If i approach 4rpm slowly then full throttle past it it seems like there isnt a problem.. Maybe its the cold weather coming . How can i say it feels like limp mode?? But still able to hit vtec pulls

 

hopefully so much didn't get down there to clog the cat partially. and dudes theory on taking it on the highway to open it up is I would think to promote getting rid of excess carbon deposits.

 

Tbh i did have a crap load of carbon depostis blockin up the chamber and ports. It was literally solid crud! Im sure some of the carbon deposits fell down but it doenst feel like the cars affected from it. I only noticed when i tried to full throttle from rolling gear 2 that my rev bars slows down as if passes 4000 rpm then when it reaches 5500rpm normal vtec kicks in. Maybe the car isnt warmed up, limp mode (for watever reason it feels like that when trying to do the above) but i usualy full throttle when my temp bar is at its peak.

Question is, by cleaning carbon and some falling into the manifold, lets say quite abit because i dont thnk this has been done for 13 years. Can that affect my acceleration etc? This should be happening before i clean the varbon deposits lol thanks

 

its fixed?

 

Would it really be too much to ask for you to tell people what kind of car you're dealing with.

 

Car:
Honda Accord Type R 2000
Red and Black Leather Interior
K&N Intake Typhoon System
Custom Exhaust Manifold
Wider Back Boxes
VTEC Solenoid Cleaned
Throttle Body Cleaned
V-POWER ONLY

this is what ive come across it might make sense it might not. This video is about showing you my power that slows at 4000 rpm to 5500 rpm (starting from gear 2 then WOT straight) Its just a slight noticeable after having egr system cleaned.


BEFORE i cleaned the egr valve, ports and chamber, i was able to rev powerfully across the low and mid ranges.

Now after I cleaned the ports, (note: alot of the carbon buildup has probably fallen into the manifold, but not sure if that would matter) I seem to be reving much more smoothly but when im at WOT on gear 2 at 2000rpm, the car begins to kinda have a slow down feeling at
4000rpm and upward until VTEC of course.

I hear the engine revving louder as it goes through these revs but im not actaully going as fast BEFORE fixed my CEL for the egr insufficient flow.

This is what i think - because there was SO MUCH carbon buildup in the ports before, I was using more air mixture (possibly fully) and it was performing much better than now. It feels like its running in economical mode, limp mode, or some sort.

I checked for vacuum leaks and there are none. Plus my egr valve is fine because i have no more CEL.

Problem is, if I got a blanking plate for my egr valve, CEL will come on. Ive already gone into the research of how to get this damn CEL of my ECU but it only seems like i can be able to do that in a remap. So i may as well remap when I decide I want my power + even more power with the remap lol.

What could it possibly be? The fact that i cleaned what needed to be done so I've got the car back in its original state how it should've been?
Or did I do something dodgy like fill the manifold with s****load of carbon or something? doesnt seem like the issue tho.

If anything i think i gained more low power range however, its just when i reach higher revs past 4k rpm :S ITS STILL A BEAST! LOL

If i can somehow bypass this then I dont think i would want a remap

Thanks for reading guys! hope you can share some thoughts on this.

 

Check your spark plugs. If they're black then it was just running really rich before you cleaned out the egr and you might have just been getting a little more power as a result at the expense of gas mileage. I don't really see anything wrong in your video. I am pretty knowledgeable at WOT vtec pulls since I do them all the time.

 

thats the thing. I changed my spark plugs not long ago so I know thats not a problem. In the video its not noticable, but I do feel the car restricting itself. before i cleaned it, i felt like i had moer power driving through the mid ranges. So curious to as whats the cause of it tho im not sure if this is what the egr does.

 

the Exhaust Gas Recirculation valve does just that. it recirculates the exhaust gas back in the intake runners and into the combustion chamber to be burned again thoroughly.

I think when the valve is opened the fuel mixture is somewhat leaned out. someone correct me if im wrong please.

 

if that is the case, does the mean my egr valve could be faulty? :S cant be since on CEL

 

things can be bad yes, but yours? probably not. from the video, it looks fine. like said before.