Car feels sluggish at low rpm

[VTec1987]

Recently this has happen when driving normally.
After 4000 rpm then it feel normal again, its feel sluggish driving normally at low rpm but when i put my foot down then it feels normal again.

What causes this problem?
Bad spark plugs?
Bad spark plug cables?

[dc2r_fAn]

could be several things

low oil
lose wires

Check your spark plug wires, you could have an ark (arch) not sure on spelling. At low rpms, you have less voltage going through wires, which means.. when you push more power, it will have a stronger connection. If that isn't the case, check your fuel pump or filter. Also, to help answer your question, tell the world if it happens when it's cold, or hot, or all the time.

[VTec1987]

it happens during random time, happens more wen the engine is cold but it also happens wen the engine is warm also, but not as much when its cold

[VTec1987]

what you mean be arch?

[m0nty ITR]

what you mean be arch?

A faulty earth connection where the current passes to bodywork and gives a false effect or reading. The spelling is "arc".

Wiki Here (http://en.wikipedia.org/wiki/Electrical_arc)

[aaronng]

Check your:
1) Ground
2) spark plugs
3) spark plug wires
4) Dizzy cap
5) Ignition coil
6) Fuel filter
7) Air filter
8) O2 sensor

[VTec1987]

sparks just changed recently (Denso), what should be the correct gab of the spark plug for a b18c.

[vteccoupe]

i had the same problem as well but i had a clicking noise frm the undercarriage of my car. Turns out dat the walls in the cat had collapsed and it jz slows dwn the car heaps...

[VTec1987]

i had the same problem as well but i had a clicking noise frm the undercarriage of my car. Turns out dat the walls in the cat had collapsed and it jz slows dwn the car heaps...

i dink my case is a bit different to urs.


Could it be the dizzy by any chance, i changed dizzy not to long ago, the timming mite be wrong

[lenz]

i had the same problem when it hit to 4k gave me a big kick.. to fix it try changing your fuel filter thats what i did and while you at it change your spark plug and give you throttle body a clean is a must

[Zilli]

sparks just changed recently (Denso), what should be the correct gab of the spark plug for a b18c.

Hey mate, you dont need to worry about gaps on plugs for new carts as they come pregapped...

your issue will more than likely be an ignition one, so follow the steps AARONG has posted above and get back to us

[bigjo5]

you tend to get that when u buy a honda. =]

[beeza]

Could be the sensor's on your Throttle body or the Ignition control module in the dizzy too.

[VTec1987]

Could be the sensor's on your Throttle body or the Ignition control module in the dizzy too.

which one on the throttle body?
I changed ICM already.
It mite be my coil, i didnt change that yet

[beeza]

Well if it was anything like mine,it was all of them...I changed them one at a time and everytime I did it improved.It was a real pain in the ass.I tried to change the TB in one go but the one I got was missing a bit off it.
There's no test that I know of to test the sensor's you just have to replace them...so if you can get a TB cheap with all the sensors it will definately be worth a shot.If it dosen't fix it you got a spare :)

[VTec1987]

So you changed everything and there was no bogging at all?

[beeza]

I've still gotta change the Throttle position sensor (TPS),it's a bit tricky,just haven't got round to it.Mine still hesitates but I've change everything else...

When I changed the IACV on the bottom of my TB it fixed the erratic idle and changing the map sensor made it run a heap better but it's not completely gone.

[Limbo]

my bet is faulty sparkplugs. Even new ones can be faulty. I once brought a set and one out of the 4 were fault. After lots of testing

[beeza]

OMG! I could just imagine the nightmare...

[EGJOE]

Hi buddy
me and my mates been playing around with h series motors for a while. It sounds like it could be your intake manifold. Your intake manifold has two sets of runners to increase response down low with out sacrificing top end i think integra vtir have similar setup.
Sometimes the butterflys can stay stuck open on small runners which result in sluggish top end, and sometimes but rarely get stuck on larger runners resulting in poor bottom end performance hope this helps.

EGJOE

[EGJOE]

around 4kish normally the second setbutterflys open up.

EGJOE

[Phuong1987]

around 4kish normally the second setbutterflys open up.

EGJOE

Nah buddy, butterflies opens up at 5800rpm, vtec kick in at 4400rpm

[B18cEG]

Have you played with your TPS anytime recently. also one thing that i strongly suggest is th test the resistance for each ignition lead with a multi meter, Off the top of my head it should be about 8kohm (8000 ohms) per metre of lead, this is very important that it is close to this, the other thing is to take off your distributer cap and give the 4 little contact posts a clean with some fine wet n dry sandpaper, not much but enout to just get the buildup off then give them a tiny squirt of RP7 or WD40 to slow down the buildup in future but you must leave it to dry before re-installing it, also make sure the distributer cap still has the spring in the middle of it intact and also give the rotor a little sand also, This is a must. try this (every step) and let us know.

Thanks

[B18cEG]

Just a note: Make sure TPS is set extremely close to .46v at closed throttle for 100% performance

[EGJOE]

Hmmmm,

Secondary runners got to be open before vtec kicks in quite sure of it. On a Jdm H22a secondary runners open at about 4100rpm then vtec kicks in around mid 5000rpm. Have worked on 5 or so h22a all the same.

If you want to be sure of it wire in a vtec light it'll indicate when the vtec solenoid opens.

EGJOE

[beeza]

Just a note: Make sure TPS is set extremely close to .46v at closed throttle for 100% performance

Is that the same for d-series?
So you check it with a voltmeter?

[B18cEG]

Im pretty sure its the same for every car, yes voltmeter

[VTec1987]

Beeza
i thought u fixed ur bogging problem?

[aaronng]

Nah buddy, butterflies opens up at 5800rpm, vtec kick in at 4400rpm

It's the other way round.

[VTec1987]

It's the other way round.

Phuong1987 is right, vtec does kick in at 4400rpm for h22a motor and Gsr motor(vtir)

[EGJOE]

HAHA funny :zip:

[VTec1987]

HAHA funny :zip:

Dude wats so funny?
what so you saying that when you hear a loud change over point at 5800rpm on your prelude so you think thats vtec.

Go to DIY and search up vtec light, do it on your prelude and see wat rpm your vtec kicks in.

Everyone on this forum knows that h22a & b18c(vtiR) vtec kick in at 4400- 4600rpm.
Why do you think ppl that change to aftermarket single stage IM lyk Skunk2 have to raise their vtec?
Get your facts right before posting m8. You know lil about ur motor

[beeza]

I still got the problem,I just gotta swap the TPS sensor on the TB and I hope that will fix it.

[EGJOE]

you know what i think forums are to be informative and useful not to have bitch fights etc. So you can have your opinion and i'll have mine. No need to have a hissy fit. Just trying to help.
We have four h series motors so unless all of them are f...ked then im not wrong.

JOE

PS not going reply further being shot down trying to help:zip:

[Phuong1987]

U say your helping the guy and ur laughing at him
How is that helping him?
Im pretty sure that the secondary butterflies on the dual stage mani on h22 and b18(vtir) open up at higher rpm. No way it open at 4400 rpm.
Vtec kicks in at 4400rpm but you cant hear the change over point lyk b16a or b18cR. What you hearing at 5800 rpm is the secondary opening up.

[B18cEG]

I still got the problem,I just gotta swap the TPS sensor on the TB and I hope that will fix it.

I thought you managed to get the TPS off did you not? what voltage does it read? one wire will be ground, one will be +5v and the other is the one you want .46v on

[B18cEG]

U say your helping the guy and ur laughing at him
How is that helping him?
Im pretty sure that the secondary butterflies on the dual stage mani on h22 and b18(vtir) open up at higher rpm. No way it open at 4400 rpm.
Vtec kicks in at 4400rpm but you cant hear the change over point lyk b16a or b18cR. What you hearing at 5800 rpm is the secondary opening up.

Very true, if the car is stock exhaust and stock intake you will barely even hear the v-tec crossover or the secondary butterflies, if u got an exhaust or intake or both the v-tec crossover is the loudest at around 4400 and secondarys at 5700 or 5800 and thats the fact, no need to argue about it guys cos thats how it is.

[VTec1987]

I still got the problem,I just gotta swap the TPS sensor on the TB and I hope that will fix it.

i don't think it will be the TPS, i change my whole throttle body with the new sensors and it still bogs.

But i change the coil in the dizzy. It doesnt bog as much as before, it bog when ever it wants but before, it use to bog everytime i start driving .

post up if you fix the problem after you swap the tps

[B18cEG]

Just thought i would add, if you wanna test the vtec crossover just unplug the vacuum line going to the secondarys actuator thus leaving them permanently open. un-plugged line will not affect idle because it gets its vacuum from an electric motor, the motor can also be completely removed and unpluged and will not leave a "Check engine light".

Thanks

[EGJOE]

http://www.sportcompactcarweb.com/tech/0311scc_accord_h22_engine_swap/index.html

Check this out Sportscompact site from states

Reads
Bury that tach
The H22 wakes up the Accord in the same way a set of secondaries did to your father's Oldsmobile. There are no annoying vibrations or driveability problems (none were expected, but this is still a full engine/trans swap). The party starts quickly at 5200 rpm (the H22's VTEC engagement rpm) and 45 extra hp transform the Accord into something much more entertaining then the dealer ever sold. With a rev range to 8200 rpm, you can completely bury the tach (which redlines at 6200 on our '94) and watch your back seat drivers duck for cover. Isn't this what engine swaps are all about?


Joe

[eg_h22a]

Vtec Ftw!!!!!

I AGREE

[eg_h22a]

H22a Power !!!!

Nice!!!!

[ef yu]

D series FTW

[mr180sx]

I AGREE
Nissan Ftw

[mr180sx]

No Vtec Yo
Boost Ftw!!!!!

[lilhaulerz]

VTEC kicks in at 4000ish RPM ??? Wtf ??? Only if you got a vtec controller and change the point lower. But wtf would you do that.. the VTEC cam profile is designed for 5000rpm+ , you will not even feel the secondary runner kick in really.

So you saying, VTEC kicks in first denn secondary kicks in ??? WOW!.. DUAL VTEC YO ! Twice the VTEC !!! your car must be fast like a TWIN TURBO !!!

lolzzz.... VTEC kicks in 5200rpm for h22a and similiar for a b18c... Secondary Runners open first...

People change to Skunk2 so that you can have a runner thats size in between for best overal power. A Intake manifold will not CHANGE your VTEC point... THATS FOR SURE !!!

AND BOOST FTW !!!

[B18cEG]

no one said that an im will change v-tec point did they?

[lilhaulerz]

but b18c are different ...

The dual runner manifold Coupled with VTEC, you can see the VTIR engine has three stages of operation.

Stage 1 (0-4400 RPM): Low-lift cam lobe and long intake runners.

Stage 2 (4400-5800 RPM): High-lift cam lobe and long intake runners.

Stage 3 (5800+ RPM): High-lift cam lobe and short intake runners.

This three stage system is how the B18c is able to keep a flat torque curve. Changing to a single-stage intake manifold such as the Skunk2 would amplify the cam lobe change and you would see a double hump torque curve similar to the Type R.

Most people confuse the opening of the short intake runners as VTEC engagement because of the dramatic change in sound. It is hard to hear VTEC at 4400 RPM using the dual-stage intake manifold because the long runners restrict flow volume to the engine in order to maintain flow velocity. So for anyone that says VTEC on their B18c is engaging at 5800 RPM tell them their ears are not engine tuning devices.

[lilhaulerz]

B18cEG :

USE YOUR EYES AND READ. I never sed you were changing the vtec point, i just sed vtec would only kick in at 4000rpm if you've changed it with a vtec controller !

[90LAN]

ive being in a few h22 cars and vtec point is always over 5k easy
dual butterflies are gay imo

[lilhaulerz]

h22a are 5000rpm... correct.. I used to have 2000 VTiR prelude

[B18cEG]

B18cEG :

USE YOUR EYES AND READ. I never sed you were changing the vtec point, i just sed vtec would only kick in at 4000rpm if you've changed it with a vtec controller !

USE YOUR EYES AND READ. At the end of your last post you said "an intake manifold will not change v-tec point, thats for sure" i was just asking why u said that, no one thought that did they? where did you get this magical figure of 4000rpm or is it just an example, one more thing, why are you talking about changing the crossover point anyway? just curious.

Thanks

[B18cEG]

LILHAULERS, yes on the b18c it goes v-tec then butterlies so no need to be a smart about it

[EGJOE]

Yeah no need to be smart :p So gay why be negative for?

mAN lovin FTW LOL:p

[lilhaulerz]

Obviously you aint reading the whole thread.. if you do, it make a lil more sense... Someone previously said skunk2 manifold would change the vtec point ! .... Anywayz... your right ,im wrong, watever tickles your fancy...

[eg_h22a]

Very Nice
I Like !!!!!
Vtec Ftw!!!!

[VTec1987]

Obviously you aint reading the whole thread.. if you do, it make a lil more sense... Someone previously said skunk2 manifold would change the vtec point ! .... Anywayz... your right ,im wrong, watever tickles your fancy...


Dude wats so funny?
what so you saying that when you hear a loud change over point at 5800rpm on your prelude so you think thats vtec.

Go to DIY and search up vtec light, do it on your prelude and see wat rpm your vtec kicks in.

Everyone on this forum knows that h22a & b18c(vtiR) vtec kick in at 4400- 4600rpm.
Why do you think ppl that change to aftermarket single stage IM lyk Skunk2 have to raise their vtec?
Get your facts right before posting m8. You know lil about ur motor

Bro, no 1 said anything about changing to Skunk2 mani will change the vtec point.
YOU WILL NEED TO RAISE THE VTEC POINT IF CHANGING TO SKUNK2 MANI,

[RtN]

Hey mate, you dont need to worry about gaps on plugs for new carts as they come pregapped...

your issue will more than likely be an ignition one, so follow the steps AARONG has posted above and get back to us

So like if you buy NGK IRIDIUM's for your model, you dont need to gap it etc?
Cause I always get mixed answers on these... .___. Like I remember once a member told me that eventhough its not right gap.... people still use them and it seems ok so they continue to use it anyway!

[lilhaulerz]

At the end of the day your car is stuffed and you cant fix it ... Ha-Ha !!!! Sell your car and get a BOOST yo !!!

Boost FTW !!!!

[BOXTEC]

are you running full cold air intake ??
like down under the front bumper ?
If you've just put it on sometimes it feels a bit sluggier than usual (opposed to short ram or stock intake)

Dunno... could be wrong =)

[aaronng]

So like if you buy NGK IRIDIUM's for your model, you dont need to gap it etc?
Cause I always get mixed answers on these... .___. Like I remember once a member told me that eventhough its not right gap.... people still use them and it seems ok so they continue to use it anyway!
Just check that they are the right gap. You have to be careful if you adjust the gap because you can break the fine electrode tip.

[beeza]

I thought you managed to get the TPS off did you not? what voltage does it read? one wire will be ground, one will be +5v and the other is the one you want .46v on

Haven't done it yet :o
Thanks for the info mate :thumbsup:


i don't think it will be the TPS, i change my whole throttle body with the new sensors and it still bogs.

But i change the coil in the dizzy. It doesnt bog as much as before, it bog when ever it wants but before, it use to bog everytime i start driving .

post up if you fix the problem after you swap the tps

Seems like it could be anything,I've change the dizzy and coil.Anyways I'll change the TPS sensor over and report the change,if any :thumbsup:

[B18cEG]

Just so you know if it is the
TPS the car will drive fine then aout of no where it will bog and throw you forwards, nornally as you press slowly on the throttle.

[beeza]

Hmmm,my car dosen't do that...it surges/lacks power in the lower RPM's.If I give it some throttle it seems fine but when I'm just cruising it always surges slightly,not bad but it shouldn't be like that.

[B18cEG]

Hmmm,my car dosen't do that...it surges/lacks power in the lower RPM's.If I give it some throttle it seems fine but when I'm just cruising it always surges slightly,not bad but it shouldn't be like that.

I have also seen that TPS related. did you test the resistance of your leads? and does it ever idle funny?

[beeza]

No I haven't done that,cheers mate I'll check that.The idle is fine.It was erratic so I changed the cold air control valve sensor on the TB and that fixed that.

[beeza]

Just check that they are the right gap. You have to be careful if you adjust the gap because you can break the fine electrode tip.

I did that,don't use a hammer :zip: :wave:

[beeza]

but b18c are different ...

The dual runner manifold Coupled with VTEC, you can see the VTIR engine has three stages of operation.

Stage 1 (0-4400 RPM): Low-lift cam lobe and long intake runners.

Stage 2 (4400-5800 RPM): High-lift cam lobe and long intake runners.

Stage 3 (5800+ RPM): High-lift cam lobe and short intake runners.

This three stage system is how the B18c is able to keep a flat torque curve. Changing to a single-stage intake manifold such as the Skunk2 would amplify the cam lobe change and you would see a double hump torque curve similar to the Type R.

Most people confuse the opening of the short intake runners as VTEC engagement because of the dramatic change in sound. It is hard to hear VTEC at 4400 RPM using the dual-stage intake manifold because the long runners restrict flow volume to the engine in order to maintain flow velocity. So for anyone that says VTEC on their B18c is engaging at 5800 RPM tell them their ears are not engine tuning devices.

I know how a Skunk2 IM and 60mm TB (stock 56mm) affect a d-series,what does the Skunk 2 IM and TB to match do/affect the b18c?