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Low RPM Stutter...

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    #1

    Low RPM Stutter...

    Hello everyone. I have been toying with my CB7 for almost three years now. I have been using these forums as a refrence for many upgrades including my recent 99 acura CL rotor over hub conversion.

    I have finally been stumped by my CB and I need help.

    I have a Low RPM stutter. Seems to stutter only below 3500 RPM. It also only does so at 1/2 throttle or less. As soon as I gun the gas the stutter stops and I get hit with full power. I have noticed my mileage going downhill lately as well...

    If I downshift or drive the living bejeebus out of my car it seems to drive perfectly fine. No funny exhaust colors out the tailpipe either. Fuel pressure stays around 38-42 psi. Thats what my car has always run at...
    I am guessing its an ignition problem somwhere between coil and plugs but I havent had time or patience to troubleshoot it as it doesn't happen all the time.
    This all started today when i sprayed off my engine bay at the car wash, but i was careful and covered the air intake, battery and distributor. I think that this is probably just coincidence...

    Oh ya, also only seems to do it when its hot.
    Any input is appreciated...

    ^Click Me!^
    Tags: None
    #2
    Not a good idea to pressure wash engine, there are many connectors and relays that can cause problems if soaked. Give it time to dry.
    Could take a few days.
    Take that freek show to the park, maybe the squirrels will care.

    Comment

      #3
      try unplugging your o2 sensor and see if it goes away


      "You've done more threatening prescription drugs..."
      "the character of a man can be judged by how he takes his criticism"
      "Quoting yourself is like, masturbation" -Starchland

      Comment

        #4
        I'm having a similar issue... going to mess with it more today to see if I can figure it out.






        Comment

          #5
          yea... i have the same problem!!!

          HELPPPPP !!!!
          I sell slightly used tires for cheap, jus pm me what u need!

          Hp sells cars, Tq wins races ....
          - 95 Camaro (beast) TOTALED
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          -92 Accord LX (slammed) SOLD
          - 95 Jetta (VR-SEX) CURRENT DD

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            #6
            Hmm interesting that 2 other people have the same issue... It really feels like a lack of spark. Its too intermittant to just unplug something and see if it goes away. It'll drive fine for a couple miles then act up really bad for the next mile or so. Unplugging the O2 would put it in limp mode as well so i don't know how much that can help troubleshoot... I guess I'll give it a try.
            Any other ideas???

            ^Click Me!^

            Comment

              #7
              I'd say it's a spark plug problem. I had the problem before and had 'em changed. 1 of the plugs were bad.
              98' Mustang 3V Swap
              11' VW CC R36

              Comment

                #8
                Damnit, I'm always so quick to submit. Well, you said something about it only happening in low rpms, and when it's hot. Before I changed the plugs, it was fine when it started. Once it got warm, it started. The longer I drove it, the worse it got. Higher rpms, no bog at all. I honestly thought my head gasket went again, cause it was driving like coolant was gettin' into the fuel again, but they did a pressure check on the engine and it was okay.
                98' Mustang 3V Swap
                11' VW CC R36

                Comment

                  #9
                  bump please, any more ideas?

                  ^Click Me!^

                  Comment

                    #10
                    mines does the samething


                    but mines might be cuz A:I dont have my knock sensor connected to anything & B:my dizzy is FULL of oil cuz the dizzys inner seal came loose



                    93 Accord LX Sedan (sold)
                    01 Civic LX Sedan (sold)-93 Accord EX Wagon (totaled)
                    93 Accord SE Sedan (sold)-92 Accord EX Sedan (sold)
                    93 Accord SE Coupe (sold)-97 Accord SiR Wagon (sold)

                    95 Accord LX Wagon (CURRENT)-05 Impreza WRX Sedan (CURRENT)-02 Ram 1500 (CURRENT)-20 VW Jetta (CURRENT)

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                      #11
                      ive got the same problem. At around 2500 rpms. I have an auto so when i get off the gas or right before it changes gears itll sputter. I had oil in my plugs so i changed the valve cover gasket and gasket around the wires. Changed the spark plugs and today changed the wires. Nothing has helped. Ima just go deeper into the ignition source. Next is the cap and rotor. Someone suggested rotor button??? At least im going with all NGK parts. Plugs and wires. I needed em anyway. Ill stay posting! PEACE

                      MY MEMBERS RIDE THREAD

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                        #12
                        Just thought I'd post that I figured it out somewhat. I took off the dizzy cap and I found oil. Blasted out the dizzy with brakeclean and cleaned up the contacts on the cap, seems to be good now.
                        It is still idling rough so i am going to throw in some plugs tomorrow and i found someone to buy a dizzy off of for 40$. I'll post again if that takes care of everything!
                        Thanks to all!

                        ^Click Me!^

                        Comment

                          #13
                          yeah make sure there's no oil in the dizzy. You might have to replace that Dizzy O-ring, the one that sits inside the Block, I know mine was PETRIFIED rubber when I changed it and it was the source of many of my stumbling I experienced, since it leaked oil on the coolant temp sensor right below it, and got oil all over the rotor and cap on the inside from leaking. That area also houses the Ignitor module, so if that's oil soaked, it wont survive very long soaked in HOT oil.

                          So that's a pretty important O-ring if you ask me.

                          member's ride thread
                          93' EX Coupe H22A w/ P2T4 Sir 5spd 191whp 155 wtq
                          99' Lexus LS400 157k VVTi V8 gets up & goes...new DD
                          91 Accord SE 176k
                          97' Honda Odyssey 199k miles...$485 spare van for my parents

                          Comment

                            #14
                            the outer one rarely goes. & when it does its easy to find & repair. but the inner ones a bitch. few places have them, even though thats one of the most common reasons why people have to change their dizzys.

                            just change both. the outer one can be found anywhere. its just a common O ring. the inner one can be bought here...

                            http://www.autopartsfair.com/

                            thats where I got my inner dizzy seal at.



                            93 Accord LX Sedan (sold)
                            01 Civic LX Sedan (sold)-93 Accord EX Wagon (totaled)
                            93 Accord SE Sedan (sold)-92 Accord EX Sedan (sold)
                            93 Accord SE Coupe (sold)-97 Accord SiR Wagon (sold)

                            95 Accord LX Wagon (CURRENT)-05 Impreza WRX Sedan (CURRENT)-02 Ram 1500 (CURRENT)-20 VW Jetta (CURRENT)

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                              #15
                              well today i messed with my car some trying to figure this out. and ive solved my problem. i checked the two rubber pieces that cover connectors going to the alternator and they were good. So i followed my ground wire going to the battery and it was good. I then looked at my positive wire and it was loose as a bitch on my battery. Gave it a couple screws and tighten it up and walla. problem solved. Thanks slim fast. LOL. PEACE

                              MY MEMBERS RIDE THREAD

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