00 Si bogs in lower RPMs
 

I have a 00 Civic Si with OEM b16A2 with 150k miles and I am having a minor issue with the car wanting to bog at lower RPMs. It almost feels like the brake is stuck just a bit causing the feeling of bogging but I know it’s not the brakes. I am not sure if it may be bad plugs, wires or something being clogged. The thing is it doesn’t happen all the time. It mostly does it in lower RPMs in 2nd gear but once the RPMs get up higher it seems to snap out of it and have all its power. Has anyone had this issue?

Re: 00 Si bogs in lower RPMs
 

My car is doing the exact same thing, especially when the motor is cold, it feels like the car is running on 3 cylinders but once it warms up or I go into higher rpms it, like you said "snaps out of it" and runs like it should. I changed the plugs, wires, cap and rotor and it still does it. I'm going to change my fuel filter tonight and see if that cures the problem. If not, I give up and I guess I'll just live with it.

Re: 00 Si bogs in lower RPMs
 

let me know if the fuel filter works b/c i havnt started to change anything let, i was going to start with plugs/wires 1st but you've done that all ready with no help

Re: 00 Si bogs in lower RPMs
 

okay....does it feel like your not on the gas...and then for a second it snaps out of it.......if so then ur TPS went out on you...i was having the same problem with my 99 EM1....get a new tps sensor n get it to correct voltage .50 at close throttle.....

Re: 00 Si bogs in lower RPMs
 

it only "boggs" for a few seconds then snaps out of it. It doesnt happen too often though

Re: 00 Si bogs in lower RPMs
 

^^ Same thing with mine. My car is running lean too. On my header, 2 pipes are gold and the other 2 are baby blue. Ill change the fuel filter and let you know if that works, if not, I have another B16 laying around, I'll snag the tps sensor off it and see if that fixes it

Re: 00 Si bogs in lower RPMs
 

Does this car still have a catalyst on it? If so it could be stopped up causing some bogging problems. Take the bolts out of your header at the cat and disconnect it and drive it for just a little bit to see if that helps your problem.

Re: 00 Si bogs in lower RPMs
 

its ur ignition timing its to far retarded. advance it abit witht the timing light.

Re: 00 Si bogs in lower RPMs
 

I'm not running a cat and also, I drove my car open header for about 15 miles to the muffler shop so I know for sure that's not the problem. I still bogged with it open header.

Re: 00 Si bogs in lower RPMs
 

it sounds like your car seems to do it quite often were as mine is maybe once a day or maybe less

Re: 00 Si bogs in lower RPMs
 

I'd start with doing an ohm sweep test on the TP. If its fine at WOT, you can pretty much eliminate fuel as being any issue what-so-ever. If your TP ohm test dosen't drop out I'd go to the MAP next. Most TP's fail within the first 15% of throttle opening and are fine otherwise, because that's where they stay mostly, at cruising speed. This would give you your dropout in low-mid throttle angle, not necessarily concerning what RPM you're at.

Re: 00 Si bogs in lower RPMs
 

i guess ill have to read up on the Ohm sweep test bc i am not good with the multi meter at all

Re: 00 Si bogs in lower RPMs
 

As mentioned before check your fuel system. Go pick up some fuel injector cleaner from your local Autozone run that threw a fuel tank of gas. You could be running cheap gas. I have had a similar issue in the past in my old Prelude.

Re: 00 Si bogs in lower RPMs
 

It's not that hard, unplug it, get you 2 jumper wires with female ends on them and put them on the corresponding pins of the red wire and the yellow wire I think it is back there, and slowly open your throttle plate and if your ohm meter falls to O.l on a digital or open on an analog (the best for this test) then you've immidiately found your problem. If its not the red and yellow wires exactly, I know for fact you'll use the middle pin, move your jumpers around until you get on the ground side, you'll get a reading when you've done it correctly.

I wouldn't worry at all about fueling yet if you're fine at WOT. No matter what these guys say. 'Cause you need all the fuel you can get at WOT, right? Why would it screw you over at low RPMs when its sending most of the fuel back to the tank?

Re: 00 Si bogs in lower RPMs
 

Sorry for double post, but if you're not familiar with an ohm meter, you might want to know that you unplug the TP before you try to get an ohm reading. Back-probing your leads into the wires won't get you anywhere, and maybe a blown meter.

Re: 00 Si bogs in lower RPMs
 

I have a CTR motor that is doing the exact same thing at lower rpms. Interesting that everyone is having this issue around the same time. I haven't done a tune-up for my car in a while so I'm replacing the fuel filter, plugs, plug leads, cap & rotor just because it needs it anyway. If it keeps doing it then I'm going to start checking the sensors and timing.

Re: 00 Si bogs in lower RPMs
 

dont sound to bad to check th ohm , its just there are so many choices on the damn multi meter it can get confusing. I guess next step is it locate the TPS

Re: 00 Si bogs in lower RPMs
 

I have a 99 si and mine does the same thing. When you say bogs down in lower rpms, is it like a stutter kind of thing? It only happens to me around 2-2500 and then its like you said it snaps out of it.

Re: 00 Si bogs in lower RPMs
 

http://www.nachtkabarett.com/ihvh/img/omegaohm.jpg <<ohm symbol on most multimeters. I'm assuming you were joking about the TPS. If not, it's on the back of the throttle body. A three wire sensor held on with two blank headed screws--don't take the screws out and remove the TPS to do this check. Because you having limited use of a meter, it could be hard for you to set it back to proper voltage range.

Re: 00 Si bogs in lower RPMs
 

its the warm weather. the air becomes less dence the warmer or more humid it gets

Re: 00 Si bogs in lower RPMs
 

i had that problem so i called one6 and they said to replace the dizzy...problem went away after that...but mine was a gsr with alot of bolt ons

Re: 00 Si bogs in lower RPMs
 

Tell me again what that matters? :thud: He doesn't have a carburetor. You don't adjust your fuel settings for the warm weather. ECU does that for you. Sounds like he's pretty much stock--so "the tune" is not the issue I would assume. He never answered if he had a catalyst or not, that was some other guy. If he's running no catalyst on a factory ECU looking for the catalyst/o2 sensor then, yeah, that could definiately cause a problem.

Re: 00 Si bogs in lower RPMs
 

You should check those sensors first. Proper engine management relies on them. After you sweep the TP you can voltage test the MAP. It should be around .5 volt at idle. Up near 4.5V at WOT. If it isn't one of those two sensors, you can try a new dizzy, but I really don't think you'll have to go that far with 150k on the car.

I'm new here but some people are just clueless, I can tell already.

Re: 00 Si bogs in lower RPMs
 

i guess you could say that my car is pretty stock, its got an intake, header and full exhaust but thats about it. As far as the Cat converter goes it does have a aftermaker high flow converter from the looks. I will try the ohm test and take things one at a time

Re: 00 Si bogs in lower RPMs
 

is it true that your exhaust pipe diameter helps with vacuum, so the smaller you have the tighter it will be on the bottom end and larger the more gain you will see at top end rpm's? so i saw you dont have a cat, ( im not talking back pressure btw) so therefore you would lose the vacuum pulses that help pull the next stroke of air out of the engine. that could cause it to bogg...

Vaccume lines, clean your throttle body, intake manifold, check compression, make sure your spark plugs are clean, pull out dizzy and clean rotor with sand paper. and run at least plus fuel. and get a new fuel filter if its more than 4 years old.