My car stops pulling around 8000 rpms...why? - S2000 Forums


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Old 09-07-2008, 12:35 PM   #1  
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My car stops pulling around 8000 rpms...why?

I just bought a white 2000 s2k with red leather and I love it, but it has started acting up. When I first bought it (about three weeks ago) it ran fine and would pull to the 9000 rpm redline on regular gas (I didn't realize that it had to have premium, but I run premium now). Now that I am running premium, the car only pulls to about 8000 rpms and it feels like it hits a wall or a limiter. I wouldn't be alarmed, but it has pulled through 9k before. The car is completely stock except for an aftermarked airfilter. I've pulled the battery cable and reset the computer and let it idle for a couple minutes, but that didn't help. If anyone has any advice I would appreciate it.
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Old 09-07-2008, 01:02 PM   #2  
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You should take it to a dealer.
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Old 09-07-2008, 01:17 PM   #3  
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I would like to avoid that since they will rip my head off...
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Old 09-07-2008, 10:41 PM   #4  
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Not if they are professionals... Personally I don't think the low octane gas could have had anything to do with this, it would only cause knock - search the threads here, it is a very specific thing, not a general "hurt the engine" kind of deal like some people fear. The rev limiting may be a malfunction of your rev limiter.
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Old 09-08-2008, 06:25 AM   #5  
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Low octane gas, and possibly low oil pressure at high rpm's. Check your oil level / pump and maybe change the oil. Doesn't seem to be a big problem. If it was real serious, it would stop pulling at vtec switchover...
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Old 09-08-2008, 08:08 AM   #6  
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Personally I don't think the low octane gas could have had anything to do with this, it would only cause knock
That was my first thought too, Scoot. But then I thought that if the sensor detects a knock and retards the timing, that would limit the full advance and that, in turn, could limit the rpm. Just thinking out loud here. I think the easiest thing to do would be to put some high octane gas in it and see what happens.

I had a Corvette once that required 93 octane and I was forced to put 87 in it (or run out). That car ran like a Yugo until I got some go-juice back in it.

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Old 09-08-2008, 11:34 AM   #7  
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i run 87 in my car and it pulls just as hard as it does when i run 93. every now and then ill put a tank of 93 in it just to keep it strait but mine pulls like a s.o.b. until 9G's
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Old 09-08-2008, 12:11 PM   #8  
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i run 87 in my car and it pulls just as hard as it does when i run 93. every now and then ill put a tank of 93 in it just to keep it strait but mine pulls like a s.o.b. until 9G's
Not Possible. Running 87 retards the timing. It will never pull like running 93 would. BTW - Why the hell would you run 87 when 91 is the minimum required for the car per the Honda Manual?!?! Go buy a freakin Civic..... Sheesh..
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Old 09-08-2008, 02:48 PM   #9  
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Not Possible. Running 87 retards the timing. It will never pull like running 93 would. BTW - Why the hell would you run 87 when 91 is the minimum required for the car per the Honda Manual?!?! Go buy a freakin Civic..... Sheesh..

It doesn't sense the fuel octane, it simply retards the timing when the knock sensor triggers. If the knock sensor is disabled in a way that makes the engine think it's still there, it will pull just fine on 87. At least until you knock holes in the tops of the pistons. It doesn't run real well after that!
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Old 09-08-2008, 03:05 PM   #10  
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I work at Honda and I checked for the year of your S2K and didn't find anything on that problem. Very strange. PM me your VIN and I can check for recalls but other than that I'll have to talk to one of my technicians...
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Old 09-08-2008, 04:42 PM   #11  
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Oh, I just remember. If the car is not fully warmed up, it won't go into VTEC so you might feel as if it's not pulling.
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Old 09-08-2008, 04:43 PM   #12  
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Im guessing low oil possibly. If the ecu senses that you don't have enough oil, it'll cut-out as a safety feature. Note: its different than the low oil pressure light.

I also wouldn't be suprised if you got bad premium gas. In Nebraska where Im at, theres a couple of lawsuits where the stations were giving people regular to make more money.
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Old 09-08-2008, 05:48 PM   #13  
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check to make sure everything is flowing good. check to see if your cat is clogged up. check your air filter to make sure nothing is bloking it. I once had a car that ran like s#it and I pulled off the cat and it was old and clogged. once I put a new one on it ran fine.
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Old 09-08-2008, 05:56 PM   #14  
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I like the blocked exhaust or intake theory. I know of no sensor that tells the engine it's low on oil. I thought the usual first warning was it blew up in your face!

Last edited by Scooter; 09-08-2008 at 06:06 PM.
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Old 09-08-2008, 06:05 PM   #15  
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the car only pulls to about 8000 rpms and it feels like it hits a wall or a limiter.
Greetings MattYielding,

I hope you're still reading this thread....

Is it pulling hard to 8,000 rpms, or does it seem off?
No odd behaviors otherwise? Check engine lamp on?
Floormat tucked up under the throttle pedal by accident? More info might help buddy.....

If all else seems ok, I'd run it a little while making sure the right fuel was onboard.


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Old 09-08-2008, 06:14 PM   #16  
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Oh, I just remember. If the car is not fully warmed up, it won't go into VTEC so you might feel as if it's not pulling.
True, but this cut out occurs around 6000 rpm when the oil pressure isn't up enough.


Also, just talked to one of my senior technicians and he had one that just did that and it was a bad fuel pump. Can't guarentee but just had one do that.

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Old 09-08-2008, 06:17 PM   #17  
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Matt, I hope you realize tha'cher gettin' top-notch feedback here.
No. Not from me. The guyz jus' previous.
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Old 09-08-2008, 06:20 PM   #18  
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Ouch Boost,

That's a steep repair order. My wallet cheek is burnin' a hole in my jeans just thinking about it.

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Old 09-08-2008, 06:51 PM   #19  
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Ouch Boost,

That's a steep repair order. My wallet cheek is burnin' a hole in my jeans just thinking about it.

jagg
Don't worry, I would give you guys VIP pricing if you drive to see me

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Old 09-08-2008, 07:07 PM   #20  
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The car could very well dyno the same running 87 or 93. It may detonate in some cases and it may not.

As far as the fuel pump goes 707 dollars wow makes me feel bad for people that cant do anthing more than turn the key. 80 dollars for a 250 lph and an hour and a half to put it in if youre really slow.
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Old 09-08-2008, 09:57 PM   #21  
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It can't be the oil because I literally changed the oil, put a new air filter on it (aftermarket), and changed over to premium gas. Right after I changed to the right gas and the oil, it started doing this. I thought it might be the plugs, so I changed them (fourty bucks for plugs seemed steep) and I cleaned the mass air sensor to because it would sometimes act up at an idle. The car runs perfectly except for hitting a wall at 8000. Like I said, I would think it's just the limiter, but it pulled to 9000 on 89 octane. Is it possible the computer got messed up from running a few tanks of 89, because changing the gas is the only thing that has happened.
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Old 09-08-2008, 09:58 PM   #22  
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No check engine light, by the way...I thought it might be the fuel pump, but the guy at autozone told me I might be wrong, so I thought I might get an opinion from some people who know what they are talking about...I did have some bad gas, but I ran some heat and injector cleaner through it and it cleared up for the most part. I'll get you the VIN later Boost, but I don't know that off of the top of my head...

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Old 09-08-2008, 10:13 PM   #23  
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This is the place for experienced advice, all right! Plus some not so good, like this: maybe you should try 87 again!

Last edited by Scooter; 09-09-2008 at 09:44 PM. Reason: pick a number, any number
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Old 09-09-2008, 05:29 AM   #24  
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Why the hell would you run 87 when 91 is the minimum required for the car per the Honda Manual?!?!
I still don't understand. If you cant get the gas cause you are out in the middle of no where, ok. But if you can get it WHY!!!!!
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Old 03-13-2018, 01:26 AM   #25  
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Hi,

did you ever figure out what the problem was . My car is doing the same thing and no one can find out what's wrong with it ....

Thanks ❤
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