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Old December 4th, 2013, 04:42 AM   #1
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rev limit at 30mph when flooring in 1st?

OK I need help. The symptom is when I floor it in 1st the car acts like the rev limiter is at 30mph hesitates and then goes to 40mph. The same happens for a 1\4 second from 2nd from a 45 hit.

I have a check engine light but it was on before this started. I'll get it checked today. i was thinking injectors? But that wouldnt make it act like the rev limiter is at 30mph would it? Would a bad clutch do this? I dont think its the clutch because it wasnt the normal sound it was kind of muffeled which I would contribute to the lower rev limit. Idk has anyone had this happen before?
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Old December 4th, 2013, 05:02 AM   #2
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sounds like clutch to me.
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Old December 4th, 2013, 05:59 AM   #3
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It didn't do it from a third punch.. So it probably is.... Anyone around the area who knows how to change a clutch? Do you have to have a lift?
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Old December 4th, 2013, 09:01 AM   #4
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sounds like you should scan your car and see if there is any other CEL.
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Old December 4th, 2013, 09:43 AM   #5
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Hmm doesn't necessarily sound like clutch. Cruise in 6th gear and go wot and see if the Rpms jump up. That'l tell you if your clutch is slipping.
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Old December 4th, 2013, 10:51 AM   #6
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Hmm doesn't necessarily sound like clutch. Cruise in 6th gear and go wot and see if the Rpms jump up. That'l tell you if your clutch is slipping.
This.
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Old December 4th, 2013, 11:47 AM   #7
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Sorry for the noob question. How does this tell you if its slipping ^^^? If the rpms jump then it is slipping?and if not then your good?
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Old December 4th, 2013, 12:43 PM   #8
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Basically. That means; when under load the clutch is not grabbing to its full potential.
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Old December 4th, 2013, 02:53 PM   #9
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Clutch didn't slip on the way home and I did another 20 roll and the same thing didn't happen it acted normal.

A scanner wouldn't connect with the car.. The car ran fine on the way home. It couldn't be the clutch because it wouldn't have problems and then not have problems. If it happens again i'll disconnect the battery.
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Old December 4th, 2013, 04:00 PM   #10
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You forgot to install the Hondata module. Obvious noob mistake.
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Old December 4th, 2013, 05:49 PM   #11
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^^you need more than the module obvious noon mistake
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Old December 4th, 2013, 06:44 PM   #12
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^^you need more than the module obvious noon mistake
Drunk posting is bad for your health, oblivious midnight mistake.
Although wait seriously? Thought it was just module and wide o2 that was needed.
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Old December 4th, 2013, 06:46 PM   #13
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Drunk posting is bad for your health, oblivious midnight mistake.
Although wait seriously? Thought it was just module and wide o2 that was needed.
Nah not drunk or tired its 845 here bud. Its my phones auto correct.
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1/8th mile 9.06 @ 82.31
8's here I come.
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Old December 4th, 2013, 06:47 PM   #14
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Oh and for us to have hondata you have to have a 07+ tl ecu along with other misc parts. Its expensive and a pain IMO not at all worth it for 10whp.
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Old December 4th, 2013, 10:59 PM   #15
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30 mph? so when vtec is engaging? is it a "bog"

could be spark plugs lawl
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Old December 5th, 2013, 04:55 AM   #16
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30 mph? so when vtec is engaging? is it a "bog"

could be spark plugs lawl
Its after VTEC. I haven't had the problem this morning either. Weird.
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1/8th mile 9.06 @ 82.31
8's here I come.
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Old December 5th, 2013, 01:35 PM   #17
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Ok caught it on video.

Tell me what you think

https://www.youtube.com/watch?v=z68wSJR7KC0
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Old December 5th, 2013, 02:20 PM   #18
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Scan the CEL!!!!!
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Old December 5th, 2013, 02:21 PM   #19
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I can't. No where can connect with it. I'll have to take it to Honda.
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Old December 5th, 2013, 02:21 PM   #20
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What's the code for the check engine light? I'd start there.

There are so many sensors related to the VTEC engagement, that cell should tell you which one is giving you trouble.
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Old December 5th, 2013, 02:24 PM   #21
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why NO where can connect to it? Explain? What did you modify that no where can connect to it?
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Old December 5th, 2013, 02:45 PM   #22
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Surge seems to be happening around 5800 RPM. What about 2nd around the same RPM?

Happened to me when a flat head was taken to my oil filter. No oil pressure led to a massive surge/stall around VTEC engagement.
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Old December 5th, 2013, 03:23 PM   #23
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Clean out the vtec filter??
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Old December 5th, 2013, 04:49 PM   #24
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why NO where can connect to it? Explain? What did you modify that no where can connect to it?
I haven't done anything idk why it doesn't work.
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1/8th mile 9.06 @ 82.31
8's here I come.
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Old December 5th, 2013, 04:50 PM   #25
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Surge seems to be happening around 5800 RPM. What about 2nd around the same RPM?

Happened to me when a flat head was taken to my oil filter. No oil pressure led to a massive surge/stall around VTEC engagement.
I don't understand. You had a hole in your oil filter and the only problem that caused was VTEC? Seems like your engine would blow.
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1/8th mile 9.06 @ 82.31
8's here I come.
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Old December 5th, 2013, 04:51 PM   #26
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Clean out the vtec filter??
VTEC engauges at 5k. This doesn't happen at partial throttle only at wot.
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1/8th mile 9.06 @ 82.31
8's here I come.
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Old December 6th, 2013, 12:14 AM   #27
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I think you should figure out why you can't use the DLC connector to scan the OBDII ECU CEL before you start romping on your car like that.

A diagnosis over the internet is as good as a guess.


There are many factors that can cause that to happen. Oil Pressure sensor/vtec solenoid, ECT sensors reading wrong and thinking engine still cold, bad ecu, etc etc.

A scan of the cars computer will tell you exactly where to look. Take it to a professional to figure out why a OBDII scanner can't read your ecu. That should be your primary concern right now instead of trying to get help here. Often times people install alarm systems and hack into factory wiring causing issues like this.

Any real mechanic will tell you exactly the same thing. Plug in a scan tool, and if the scan tool can't read it, figure out why it can't and fix that first. Take it to a professional. For all you know, an "alarm" specialist hacked into the OBDII port, taking the 12 volt, or 5 volt power which is the reason why you can't use the DLC connector, and which is also probably freaking out the ecu. Gotta take a look and trace everything to know.
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Old December 6th, 2013, 06:57 PM   #28
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I don't understand. You had a hole in your oil filter and the only problem that caused was VTEC? Seems like your engine would blow.
I ran probably 200-250 miles (two hour road trip each way) between the puncture and discovery. Oil was probably out in the first 50 miles.

No issues after new oil filter/fill. Honda engineering or awesome oil? Over one year, mods, and 20k miles no issues *fingers crossed*

The lack of VTEC engagement was the first symptom that got me looking around.
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Old December 6th, 2013, 11:11 PM   #29
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Pull the bottom of the dash and see if the pin on the OBD2 backed out or not. That is probably why its not connecting
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