clemsonteg

I have a studder if when at idle i try to hold the throttle at 2000rpms, it bounces up and down and i cant quite get it to stay, at 1500 or 2500 its just fine but right at 2000 i cant get it. So far I have done a complete tune up ie cap, rotor, plugs, wires, fuel filter, cleaned the iacv, i even went as far as to replace the dizzy and still no progress, i replaced the first o2 sensor i havent done the one in the cat yet, I have no idea what it could be, any suggestions would be greatly appreciated as I have completely run out of ideas.

btw for reference this is a 98 civic ex

EDIT:
I just had the injectors cleaned, its slightly better but i still have the same problem, i sprayed carb cleaner on every vacuum connection and hose i can see to find a vac leak and that turned up nothing as well. This is getting very frustrating any other ideas?


Modified by clemsonteg at 10:38 AM 8/24/2006

ci_v_ic

codes??

clemsonteg

no codes, im not sure what else to do, maybe a valve adjustment

ci_v_ic

have you ever had any codes?

clemsonteg

no codes ever, if it were a code problem i would know how to fix it, im looking for real answers, im well beyond checking for codes and reseting the ecu

ci_v_ic

hey man just trying to ****** offer some alternatives but i think that ill just take my answers else where. gl

clemsonteg

aww lets whine now, boo ******* who for you

Jason-

Your wanting answers and your complaining about his help? Wtf dude?

Maybe the ecu isnt right.. something went wrong. Try running a friends ecu and do the same thing.

-Jason

ci_v_ic

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jason- &raquo;</TD></TR><TR><TD CLASS="quote">Your wanting answers and your complaining about his help? Wtf dude?

Maybe the ecu isnt right.. something went wrong. Try running a friends ecu and do the same thing.

-Jason</TD></TR></TABLE>

yea that or he's probably a little bitch that dont know how to work on his own ****. i hope your piece of **** ex gets stolen. probably wont though nobody wants an ex. lol

clemsonteg

i dont want his help because he asked me the same question 2 times, if it were a code problem, if i had a cel, then thats an easy fix, not to mention i would have included that in my first post.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ci_v_ic &raquo;</TD></TR><TR><TD CLASS="quote">

yea that or he's probably a little bitch that dont know how to work on his own ****. i hope your piece of **** ex gets stolen. probably wont though nobody wants an ex. lol </TD></TR></TABLE>

and you can be an e-thug all you want, i really dont give a ****

Chump2515

it could be the fuel injectors it happened in my car and my dads and they had to be cleaned, when in idle the car would bounce and studder and act pretty rough. thats my 2 cents even though it prolly wont do much help.

clemsonteg

thats a good possibility, i changed the fuel filter and it was extremely dirty, there was all kinds of brown gunk that came out of it. what did you do to clean them, did you have them professionally cleaned and balanced or just run a fuel injector cleaner through it?

clemsonteg

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jason- &raquo;</TD></TR><TR><TD CLASS="quote">Your wanting answers and your complaining about his help? Wtf dude?

Maybe the ecu isnt right.. something went wrong. Try running a friends ecu and do the same thing.

-Jason</TD></TR></TABLE>

I can try to check that as well, although it seems like if the actual ecu was bad that more would be wrong. my problem doesnt really affect anything other than i like to keep things in top condition, one reason why im currently getting about 37mpg. I just hate it when my car makes any kind of funny noise or acts up at all

Chump2515

for something like that we wanted to make sure it was done by a pro even though i could figure it out, so we went to the dealership for both the cars. professionally costs more but it at least is a better guarantee its done and if they screw up theyll re do it. but the cars ride fine now.

ci_v_ic

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by clemsonteg &raquo;</TD></TR><TR><TD CLASS="quote">i dont want his help because he asked me the same question 2 times, if it were a code problem, if i had a cel, then thats an easy fix, not to mention i would have included that in my first post.</TD></TR></TABLE>

the reason i asked you the second time is b/c the previous owner couldve unplugged the bulb on the guage cluster to "hide" any cel's that were already on. but whatever dude thats no way to ask for advice being a ********.

clemsonteg

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ci_v_ic &raquo;</TD></TR><TR><TD CLASS="quote">


the reason i asked you the second time is b/c the previous owner couldve unplugged the bulb on the guage cluster to "hide" any cel's that were already on. but whatever dude thats no way to ask for advice being a ********. </TD></TR></TABLE>

my bad, i know the cel bulb works, it does its normal thing of coming on a few seconds everytime i start it up, not to mention i pull of the battery cable when i do stuff, like change the fuel filter so if i did have a cel it should have been erased by now. im really not trying to be a ********, its hard to judge what people are saying via the internet without hearing a tone of voice. that being said, i believe that my alternator may be cause of some of the problem. i took my car to advanced autoparts for the little free battery and alt. check and it came back that it had a good battery but that it had a low charge and then when testing the alternator its putting out around 50 amps, it should be putting out 70, so its not necessarily bad but its limping. poor electrical signals could result in bad readings for the sensor i believe not to mention my headlights are uber dim at night, even dimmer than they should be

clemsonteg

I also noticed a humming noise with the engine off but the ignition on, i noticed it while i was checking the tps, it sounds like its coming from around the iacv or the injectors any correlation?

Dirty_D777

I second what chumps said.. 2 years ago when I put my motor in my crx. it'de have this weird stumble right at 2800-2900 rpm..no codes or anything. Endedup taking the fuel injectors in a shop and had them put on the cleaning machine and after that the stumble went away..and the idle was much nicer to. probably gained back like 5 hp.

clemsonteg

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dirty_D777 &raquo;</TD></TR><TR><TD CLASS="quote">I second what chumps said.. 2 years ago when I put my motor in my crx. it'de have this weird stumble right at 2800-2900 rpm..no codes or anything. Endedup taking the fuel injectors in a shop and had them put on the cleaning machine and after that the stumble went away..and the idle was much nicer to. probably gained back like 5 hp. </TD></TR></TABLE>

cool i will check that out, did you have yours done at the dealership as well or did you take them someplace else

instructor74

there are a few shops that have a fuel system flush machine. with out to much typing it hooks up to the fuel rail and runs a cleaner through the engine while its running. You should see the crud that blows out the tail pipe. As far as the low amps causing this that is a poss to. Make sure all the grounds on the car are good! replace any that even look the least big questionable and go from there good luck

clemsonteg

well i did the grounds, i went through and used my dremel and got a good shiney contact surface for all of my grounds and that helped a little but not much, i will go to honda and see if they can clean out my fuel injectors and see what happens from there

clemsonteg

well i made an appointment to go to a local car repair place to get my injectors cleaned, i called honda but they dont do it so im gonna have it done somewhere else, if that doesnt help then i will move on to checking the vac lines and the iacv again

clemsonteg

I just had the injectors cleaned, its slightly better but i still have the same problem, i sprayed carb cleaner on every vacuum connection and hose i can see to find a vac leak and that turned up nothing as well. This is getting very frustrating any other ideas?