my car wont rev up past 7k.. it just hesitates... im wondering if its tune up related?? maybe cap and rotor cause im at 65k and havent replaced either yet... i have a couple vids to show how it wont rev up... pleeeeeeeeease heeeeeeelp

http://www.we-todd-did-racing....DE%3D

http://www.we-todd-did-racing....DE%3D

 

That's weird, its almost like you have a rev limiter at 7 grand.. Stock ecu and everything? VAFC?

I would do the cap\rotor\plugs and then give it a shot. If that doesn't fix it then investigate more.

 

OK....do you hear something fucked up at 7000? Like a sound that wasnt there before? Its hard to tell from the vid

I'm really stumped tho. Your revs climb just fine, so its not the engine thats having trouble (I.e. cant make power up to there) It's like you have a fuel cutoff at 7000 BUT I cant tell if I hear the cutoff.

Regardless, I know the warm cutoff is somewhere along 8600 rpm...maybe the cold is at 7000 and your ecu thinks the engine is still cold? Its odd tho, cause if your temp guage works, the ecu should be getting the temp too.

 

^^^ could be right.

I've known a guy that bought a Mugen Thermostat and Thermoswitch and the car ran so cold that it wouldn't heat up to warm functions until about 35 minutes worth of driving. That screwed up his fuel curve by ng more fuel and all sorts of crud.

What have you done to your car thus far?

 

well its stock ecu and everything.. i had intake header exhaust gutted cat... but i put the whole stock exhaust system back on the car... so basically all i have right now is intake clutch and a koyo radiator... but yeah it climbs fine theres power all the way untill i hit 7k it cuts off... sometimes its around 5-6k it starts hesitating but if i let off the gas and slightly press down i can bring it up till 7k where it cuts off.. i have no clue whats going on...

 

Are you sure its a fuel cutoff at 7000?

I'm gonna go out on a limb and suggest that it could be VTEC not engaging properly, would explain the hesitation around 5-6 k. Could also explain a rev limiter ....could be there if the engine doesnt go into vtec. But this is just a theory. And come to think of it, I've driven vtecless and I think it went pass 7000

 

i may be stupid or somthing but check your oil and make sure that is it not low. As the engine revs oil pressure should raise but if you oil is to low vtec will cut off when it is not right. i may be dead wrong but it is worth a look.

 

good idea

 

Just because VTEC isn't working doesn't mean the whole engine will cut-off, just VTEC. I think.

 

i have a friend with the same problem in his non vtec crx si let me know if you find out what this is

 

vtec is working fine.. you can hear it loud at 4400 then you can still hear the secondaries... i checked my oil its fine.. ahhhhhh

 

take it to a mechanic that you trust and ask him for his opinion as to what is going on and go from there.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mrmonk &raquo;</TD></TR><TR><TD CLASS="quote">take it to a mechanic that you trust and ask him for his opinion as to what is going on and go from there.</TD></TR></TABLE>

If all else fails then definitely do that.

I suggest waiting another day to let more h-t'rs read and see if they can help you out before spending money on a mechanic.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 95civicracer &raquo;</TD></TR><TR><TD CLASS="quote">i may be stupid or somthing but check your oil and make sure that is it not low. As the engine revs oil pressure should raise but if you oil is to low vtec will cut off when it is not right. i may be dead wrong but it is worth a look.</TD></TR></TABLE>

this happened to me...i had very low oil and eng would cutout like a had a fuel cut or rev limiter..replace your oil, change your filter. you might have a faulty oil-pressure sensor. does vtec still engage?

 

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

this happened to me...i had very low oil and eng would cutout like a had a fuel cut or rev limiter..replace your oil, change your filter. you might have a faulty oil-pressure sensor. does vtec still engage?</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sinfulGSR &raquo;</TD></TR><TR><TD CLASS="quote">vtec is working fine.. you can hear it loud at 4400 then you can still hear the secondaries... i checked my oil its fine.. ahhhhhh </TD></TR></TABLE>

 

alright guys.. its getting worse... i was leaving for work a few mins ago.. got on the main road put it in 3rd.. the car was at about 3500rpm and there was nothing... i stepped on it and it stayed right at 3 it wouldnt move.. i dropped the clutch and put it in neutral and it died... i barely got it home because almost every light it died out.. now i cant even drive it..... i hope someone knows whats up

 

Take out your rotor and see if it is phyiscally intact. Either way I think you're due for a cap and rotor so replace it and see if it helps.

 

Ummm i dont know if this will help but my car didnt rev when i step on gas pedal before. Pick up my car from the body shop(suffered from theft). Realized there was no gas in the tank but i want to take it to the station i always pump, On the way there my engine suddenly hestiate to rev and just shut off whil eim going like 60, so i pull over and it manage to turn on again and it stuck at 3k and then drop because there is no gas, i manage to *ROLL* to a gas station with the rpm at 800 and wont move. So maybe there something wrong with your fuel? filter fuel line or whatever.

 

dude change your fuel filter
i had ythe same problem with my LS engine in my hatch
my fuel filter had gotten clogged and aver a few days i could barely drive because every time i hit the gas my car would hesitate like i was hitting the rev limiter. I am almost willing to put money that is what it is.

good luck

 

ok.. im gonna try to pick up a cap rotor and fuel filter after school tonight.. ill let you guys know how everything turns out

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jet Black &raquo;</TD></TR><TR><TD CLASS="quote">Are you sure its a fuel cutoff at 7000?

I'm gonna go out on a limb and suggest that it could be VTEC not engaging properly, would explain the hesitation around 5-6 k. Could also explain a rev limiter ....could be there if the engine doesnt go into vtec. But this is just a theory. And come to think of it, I've driven vtecless and I think it went pass 7000</TD></TR></TABLE>

Naw it would be the VTEC not engaging. My friend had a Rex with a b16a2 that had the wrong ECU so VTEC didnt engage.(had a friend ghetto rig push button VTEC for him haha) Well, nayways, it revd all the way to redline and drove fine...you just couldnt feel VTEC engage.

 

Yeah i would check the fuel filter, but i think it could be the whole distributor assembly might be going bad. Are you throwing any codes?

Good luck

 

nope.. no codes

 

I read the first few posts, then I scrolled down and posted.

Anyway, did you change your cap/rotor yet? Do that first and see what happens. I had that same problem after I did a motor swap and used an old distributor. The car would only rev to about 5000 and it was a B16A.

After a few days of pulling my hair out and checking everything, I found that the ground screw on the ignitor inside the dizzy came out. Check that. It's a small little screw, but when the revs get higher, I guess the contact gets lost.

I put the screw back in and it reved up fine.

 

thanks.. ill check it..