Ok, again has anyone tried an octane booster/race fuel? I'm not sure whether the higher octane would do to fuel pressure, but Japanese engines run on 101 to 104 octane. My buddy put 104 in his JDM H22a and said it was a brand new car and ran as smooth as a mofo
wo0ho0....after ****in around yesterday i think i might have found a solution for my hesitation problem! i was bored before i went out to some grad partys last night so i thought i'd **** around with the car for a bit. i pop the hood and kind of sit there looking, wondering what the **** could be wrong and cause hesitation. i know most of you guys thought something was internally wrong, but you were wrong. *pause right here for **** break* ahhhhh, i feel much better now...alright...where was i? ok....so i was looking under the hood and came across the egr. i look at the plug and say, what the hell, let me pull that off of there and see what it does. so i unplugged the egr, but still kept the vacuum lines and everything in, just the electrical plug was taken out. so i start the car up and let it warm up. idle was fine, all was well. so i take it out for a spin to see if it was still sputtering.....sure enough it was. it threw a CEL about 20 secs after i started driving it, which was to be expected since the ECU couldnt see an egr because i unplugged it. so here comes the weird part....as soon as it trips the CEL, it runs fine! so im like what the hell....so i shut the car off and restart it, same thing. when the CEL comes on, it runs perfect. i came home and pulled the code just for the hell of it, code 12, EGR Lift Sensor (Exhaust Gas Recirculation) defective circuit or unplugged / defective sensor....duh, its unplugged! lol. so by this time it was time to party so i left it in the garage and walked to a party. thats right....it was only like 5 houses down.....no designated driver needed!
anyways....so here is my hypothesis about the whole thing....keep in mind that i dont totally understand how ECUs work, k? so i unplugged the egr, but it should have still been "working" due to the fact that its vacuum powered right? well the ecu sees that it is either not working or is unplugged, throws a CEL, and in turn stops running and caring about the egr, and now the car runs fine. and im not ****ting you about the car being fine after the CEL comes on....this morning when i was leaving work i was leaving the parking lot just cruising along at about 2500rpm in 2nd gear waiting for the CEL to come on, sure enough it did and you could totally feel the motor come alive all of a sudden. i dont know if this is bad or not but since the motor felt fine i went ahead and hit vtec a few times on the freeway on the way home and it was super smooth. i dont know if the ECU also retarded the timing when it threw the CEL and richened up the fuel mixture but my ghetto a/f ratio gauge was showing a lot richer than usual at WOT across the whole rpm range, not just in vtec. but it was very smooth up top, which is hasnt been for a while. so what do you guys think? you think the egr ports are clogged and i should just clean them or do you think the egr itself is the problem? im pretty sure ive isolated it to the egr so now i need to work from here. i guess cleaning the ports would be the first logical thing to do since it would be free. so i'll try that and let you guys know how that goes after i plug the egr back in with the cleaned ports. but also give me some feedback as to what you think is actually wrong with the egr and such. im outtie! too much typin!!!
The only fallacy I can see in that is if the 'actual' root of your problem is either a timing issue or an A/F issue.
As in if tripping the CEL does those things and fixes your problem, it is not necessarily the EGR, because the solution is a by product of what you did. Of course you'll know for sure after you clean the ports and leave the sensor plugged in, but it's something to consider.
agreed, but the ecu would richen my fuel and retard my timing. my timing is already im guessing -4 degrees from stock by the distributor and my fuel delivery is fine, considering i just put in a new filter. i dont think fuel is the problem. and retarded timing would make my low end feel sluggish but wouldnt cause "sputtering" to occur.
i just got done taking off the EGR and the bottom of that thing was ****ing filthy!!!!! i wish i had a damn digicam so i could have taken a picture of it. i sprayed it with some throttle body cleaner and its looking fine now. the ports going down into the manifold from the bottom of the egr are ****ing gross too. i sprayed some cleaner down in there and its soaking right now because it was so gross. i'll be done in about 30 mins and i'll let you guys know how my drive went.
p.s. - since throttle body cleaner goes into your throttle body your motor will burn it off fine right?
all is well so far, its idlin' in the garage....headin out for a spin right now.....back to tell you guys how it went in 10 mins!!!!! hope for the best!
hellllllllllllllllllllllllllllllllllllllllllllllll llllllllllllllllllllllllllllllllllllllllllllllllll llllllllllllllllllllllllllllllllllllllllllllllllll llllllllllllllllllllllllllllllllllllllllllllllllll llllllllllllllllllllllllllllllllllllllllllllllllll llllllllllllllllllllllllllllllllllllllllllllllllll llllllllllllllllllllllllllllllllllllllllllllllllll llllllllllllllllllllllllllllllllllllllllllllllllll llllllllllllllllllllllllllllllllllllllllllllllllll llllllllllllllllllllllllllllllllllllllllllllllllll llllllllllllllllllllllllllllllllllllllllllllllllll llllllllllllllllllllllllllllllllllllllllllllllllll llllllllllllllllllllllllllllllllllllllllllllllllll llllllllllllllllllllllllllllllllllllllllllllllllll llllllllllllllllllllllllllllllllllllllllllllllllll llllllllllllllllllllllllllllll yeaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa it went away!!!!! i finally have my old lude back!
i guess it ended up being a clogged egr. i went and bought some throttle body/carb cleaner and sprayed the valve off and the ports, and now its feeling like when i first drove it home! if any of you others are having a hesitation problem and want to try cleaning your egr, email, im me, or pm me and i'll help you out!
alright.....hopefully you'll be able to understand this....
tools needed: carb/throttle body cleaner, 12mm wrench/socket
1) go out and buy some brand of throttle body or carb cleaner. i bought valvoline synpower stuff and it worked pretty well but anything should do
2) locate your egr. if you pop the hood, find your fuel rail, follow it all the way to the left until it ends, then look right behind that, its right there. it has a black top and has one connector going into it.
3) disconnect the connector going into the top of the egr
4) loosen and remove the (2) 12mm nuts that hold down the egr. its kind of hard to get to so i just used a 12mm socket with a 6 inch extension and it went on the bolt, but was still a little crooked, but i got it off.
5) follow the vacuum line coming off the top of the egr over across to the other side of the fuel rail, disconnect it from the hard plastic pipe right there (you can disconnect it anywhere, but its easiest right there i thought). remove the egr.
6) take off the gasket that was below the egr and throw it away
7) get your carb cleaner and spray the bottom of the egr VERY good. there is a hole in the bottom of the egr, spray a LOT in there, do that over and over a few times until the runoff is almost clear.
8) get your carb cleaner and spray it sparingly down into the 2 holes that were under the egr when you took it off. let it sit for a minute or so then use a cloth of some kind of dab out any extra cleaner that is puddled down in there. its veryyyyy dirty, watch out, dont use mommas favorite rag!
9) make sure the egr is as clean as you can get it and the two ports that were below the egr are clean or as close to clean as you can get them, then put the new egr gasket over the two holes on the intake manifold below the egr.
10) put the egr back on and tighten down the (2) nuts that hold down the egr valve
11) reconnect the vacuum line you disconnected in step 5
12) reconnect the connector you disconnected in stop 3
13) its not a must but i always feel better resetting the ecu after something like this, so if you want to do that, go ahead and do that.
that should be it....worked for me so i hope your guys problems get fixed by doing it also! good luck!!!
not to be a wet blanket, but am I the only one who thinks this doesn't make any sense what so ever? there are mods that will completely block off the EGR valve entirely - just because the hole gets a little clogged, and you aren't recirculating exhaust gasses as much as you should.... your gas milage and emmisions might take a hit, but it shouldn't rob any power at all...
anothing thing - for the people that have the hesitation problems, and don't have a modded fuel curve (vafc, etc) check your exhaust in your rear view mirror on hard upshifts. you should see black smoke.
if you don't, then EVERYTHING here is pointing to a fuel problem.
I've been dealing with this problem for months now, and I'm getting really sick of it... I'd love if it was as simple as cleaning your exhaust gas recirculation valve, but I don't think thats fixing the under lying problem.... you're still running lean, IMO
edit: you want proof? go pull your spark plugs. I bet they are white
i dont run lean at all. in fact, since i cleaned the egr ports, it went back to where it was before the problem started, pretty damn rich. when the problem was occuring my a/f ratio gauge would read about 1-2 green bars during normal driving, now it stays in the 3-5 range during normal driving, which is where it was before i noticed the problem.
if you don't, then EVERYTHING here is pointing to a fuel problem.
I've been dealing with this problem for months now, and I'm getting really sick of it... I'd love if it was as simple as cleaning your exhaust gas recirculation valve, but I don't think thats fixing the under lying problem.... you're still running lean, IMO
edit: you want proof? go pull your spark plugs. I bet they are white
They are white in my car but more specifically in #1 cylinder the spark plug is extremely white with funky white pebles covering the tips and the ceremic piece is mostly covered in carbon. I've never had this problem until I put on DC ceremic headers. I don't know if that's what caused it maybe it just elevated an already existing problem.
The egr in my car was also very carbonized so I cleaned it, now I'm waiting for a new radiator so that I can take the car on the road and test it out.
loosen and remove the (2) 12mm nuts that hold down the egr. its kind of hard to get to so i just used a 12mm socket with a 6 inch extension and it went on the bolt, but was still a little crooked, but i got it off.
I'm having great difficulty w/ this. I did what you instructed and broke my socket. Did you have alot of difficulty taking thses things off??
I'm having great difficulty w/ this. I did what you instructed and broke my socket. Did you have alot of difficulty taking thses things off??
if you want to, go ahead and spray it with some liquid wrench, or something of that sort. just make sure you put plenty of downward pressure on the wrench while youre trying to loosen it. its on there decently tight and might "pop" when you finally bust it loose. i thought i broke it when it did that.
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.
...
Linear Mode
