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Thread: 4000 rpm engine sputtering

  1. #1

    4000 rpm engine sputtering

    as the engine approaches 4000 rpm on my 1998 Honda Accord LX it seems to sputter or drop out. But this only happens at 4000 rpm. It was also idling low until I added some fuel injector cleaner, then this cleared up. The car runs fine except for this. Has anyone heard of this or had this problem....

    Thanks...

  2. #2
    Older Honda Fanatic SumAccordGuy94's Avatar
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    check all your wires... distributor... rotor... spark plugs...

  3. #3
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    Yeah, sounds like the distributer to me

  4. #4
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    does it lag after that or just die there?
    sometimes in the battle for speed one has to take the bus
    "sex should be like driving a honda, slow, obscene and loud enough for the neighbors to hear"

  5. #5
    it lags for a second then kicks back it. It never dies. My husband says its kinda like there is a rev limiter.....

  6. #6
    Faster than your Geo
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    O2 sensor(s)
    '06 RSX-S 11/14/05
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    94 Accord LX: (BEATER STATUS)
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  7. #7
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    hmmmm has your car ever been hit on the front passenger fender?
    with my car my ecu got shorted out so wheneva i hit around 4500 it would putter and lag past it. basically for me my engine was tryn to go thru its VTEC stage but wasnt recieving the signals from the ECU i had to get a whole new ecu. might not be your problem but thats why i'm asking about the accident
    sometimes in the battle for speed one has to take the bus
    "sex should be like driving a honda, slow, obscene and loud enough for the neighbors to hear"

  8. #8
    Life is FUN!!!!!
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    my car does the same exact thing!! at 4000 hey decibel what was the problem with your car now?? because i think my car was in an accident but not sure if that could cause it??

  9. #9
    heavy cars Rule!
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    that can be alot of things. 1st check intake air control valve sensor located in front of intake manifold,. another could be faulty spark plug wire, or spark plugs, might be loose. O2 sensors, clogged injectors, fuel filter, or faulty fuel pump. if it has a check engine light, its most likely the o2 sensor or the intake air control valve. good luck.
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  10. #10
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    If its 4cyl vtec does it accel past or act as if its bouncing off a rev limiter. it could be an oil pressure problem. Vtec kicks in @ 4000 rpm on 98-02 accord 2.3 and is controlled by oil pressure buildup. vtec switch clogged, o-ring busted, oil low? Is check engine light on?

  11. #11
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    I am having the same problem on a 2000 Accord 4cyl manual transmission. My check engine light is on. From what I am reading here, it's either the vtec swith or o2 sensors. Should I try to clean the injectors first?

  12. #12
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    The chances of your injectors being clogged is slim. it also wouldn't set off the check engine light. Pick up a haynes manual ($15) @ any auto parts store. Helms is a better manual but costs 4x as much and is alot harder to get. In section 6 is an explanation of the use of a jumper wire to read engine codes and an explanation of what the codes mean. If it comes up as an O2 sensor let me know. You can clean them, even though everyone says you can't. Vtec will show up as a trouble code too.

  13. #13
    Senior Member JL95AccorD's Avatar
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    Quote Originally Posted by CWM99ACC
    The chances of your injectors being clogged is slim. it also wouldn't set off the check engine light. Pick up a haynes manual ($15) @ any auto parts store. Helms is a better manual but costs 4x as much and is alot harder to get. In section 6 is an explanation of the use of a jumper wire to read engine codes and an explanation of what the codes mean. If it comes up as an O2 sensor let me know. You can clean them, even though everyone says you can't. Vtec will show up as a trouble code too.
    How do you clean the O2 sensor?

  14. #14
    #010597 2kAccord's Avatar
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    Sounds like low oil pressure. Make sure the oil level is full, then try again. VTEC wont engage if theres not enough oil, making the shuddering sensation.
    00 Accord EXL Coupe
    In desperate need of boost.

  15. #15
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    Cleaning O2 Sensor:

    Remove sensor carefully (don't lose the metal washer, sometimes it sticks to the manifold)

    Fill a glass jar or cup(don't use plastic!) with fuel injector cleaner to a level where it just covers the sensor housing (the part below the threads when the wiring harness is facing straight up). Dont submerge anything that isn't metal. Fuel injector cleaner can soften plastic.

    Let it sit for 10 minutes.

    Scrub with a stiff toothbrush or plastic detailing brush, making sure to push it into the holes.

    Rinse with extremely hot high pressure water and then blow it clean with an air compressor. Be sure to remove all moisture.

    Reinstall.

    O2 sensors work by measuring resistance in exhaust gasses. Essentially all you're doing is cleaning electrical contacts.

    I did this to both of the OEM O2 sensors on my 99 Acc 2.3 @ 160k (it was running rich, showing trouble codes for primary heated O2 sensor malfunction). Car runs smooth as silk and all trouble codes gone. 173K today. I drive 250-400 miles daily six days a week.

  16. #16
    Senior Member JL95AccorD's Avatar
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    Quote Originally Posted by CWM99ACC
    Cleaning O2 Sensor:

    Remove sensor carefully (don't lose the metal washer, sometimes it sticks to the manifold)

    Fill a glass jar or cup(don't use plastic!) with fuel injector cleaner to a level where it just covers the sensor housing (the part below the threads when the wiring harness is facing straight up). Dont submerge anything that isn't metal. Fuel injector cleaner can soften plastic.

    Let it sit for 10 minutes.

    Scrub with a stiff toothbrush or plastic detailing brush, making sure to push it into the holes.

    Rinse with extremely hot high pressure water and then blow it clean with an air compressor. Be sure to remove all moisture.

    Reinstall.

    O2 sensors work by measuring resistance in exhaust gasses. Essentially all you're doing is cleaning electrical contacts.

    I did this to both of the OEM O2 sensors on my 99 Acc 2.3 @ 160k (it was running rich, showing trouble codes for primary heated O2 sensor malfunction). Car runs smooth as silk and all trouble codes gone. 173K today. I drive 250-400 miles daily six days a week.
    Anyone going to object to this method?
    I might want to try it before dishing out the bread for a new sensor.

  17. #17
    Senior Member blacknight07601's Avatar
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    Quote Originally Posted by 2kAccord
    Sounds like low oil pressure. Make sure the oil level is full, then try again. VTEC wont engage if theres not enough oil, making the shuddering sensation.
    Exactly. If your car is low on oil, it will not rev past 4K RPM's. Check/Change your oil. Especially if it's happening and your CEL is on.
    What's that red button on your steering wheel....OOOHHHH MY GOD!!!!!!
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  18. #17
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