92 Accord Idle Speed Question
Does anyone know if the idle speed is adjustable or if it's controlled
by the computer? I'm getting some fluctuation that I need to get fixed. Thanks |
Re: 92 Accord Idle Speed Question
It is adjustable AND controlled by the computer. There is an idle
control screw somewhere on the throttle body. If you have fluctuating idle, you most likely have a vacuum leak somewhere, so try to find this before you adjust anything. Fill up a squirt bottle with water (others recommend using carb cleaner) and spray a fine mist around the various parts of the intake system. When you get a drop in idle speed, you have found the leak. If this does not work, start pinching the various vacuum hoses until you see a drop in RPM. If you do find a hose that allows you to drop the RPM, follow it to look for leaks or faulty valves etc. Another thread dealt with the same issue on a CRX. The original poster in that thread found that his fast idle valve was leaking. It is a thermo-wax valve that allows extra air in while the coolant is cold. His was leaking air all the time. If you do need to adjust anything, first get a shop manual as the process is not completely straight forward. The best manual is the one from http://www.helminc.com, but if this is the only work you are going to do on the car the Haynes manual would probably suffice. There is a stop screw on the throttle body (close to where the gas wire is) that looks like the idle speed adjustment on carburetors. Do not touch this screw, as it is factory set and is not used to regulate the idle. Face wrote: > > Does anyone know if the idle speed is adjustable or if it's controlled > by the computer? > > I'm getting some fluctuation that I need to get fixed. > > Thanks |
Re: 92 Accord Idle Speed Question
It is adjustable AND controlled by the computer. There is an idle
control screw somewhere on the throttle body. If you have fluctuating idle, you most likely have a vacuum leak somewhere, so try to find this before you adjust anything. Fill up a squirt bottle with water (others recommend using carb cleaner) and spray a fine mist around the various parts of the intake system. When you get a drop in idle speed, you have found the leak. If this does not work, start pinching the various vacuum hoses until you see a drop in RPM. If you do find a hose that allows you to drop the RPM, follow it to look for leaks or faulty valves etc. Another thread dealt with the same issue on a CRX. The original poster in that thread found that his fast idle valve was leaking. It is a thermo-wax valve that allows extra air in while the coolant is cold. His was leaking air all the time. If you do need to adjust anything, first get a shop manual as the process is not completely straight forward. The best manual is the one from http://www.helminc.com, but if this is the only work you are going to do on the car the Haynes manual would probably suffice. There is a stop screw on the throttle body (close to where the gas wire is) that looks like the idle speed adjustment on carburetors. Do not touch this screw, as it is factory set and is not used to regulate the idle. Face wrote: > > Does anyone know if the idle speed is adjustable or if it's controlled > by the computer? > > I'm getting some fluctuation that I need to get fixed. > > Thanks |
Re: 92 Accord Idle Speed Question
It is adjustable AND controlled by the computer. There is an idle
control screw somewhere on the throttle body. If you have fluctuating idle, you most likely have a vacuum leak somewhere, so try to find this before you adjust anything. Fill up a squirt bottle with water (others recommend using carb cleaner) and spray a fine mist around the various parts of the intake system. When you get a drop in idle speed, you have found the leak. If this does not work, start pinching the various vacuum hoses until you see a drop in RPM. If you do find a hose that allows you to drop the RPM, follow it to look for leaks or faulty valves etc. Another thread dealt with the same issue on a CRX. The original poster in that thread found that his fast idle valve was leaking. It is a thermo-wax valve that allows extra air in while the coolant is cold. His was leaking air all the time. If you do need to adjust anything, first get a shop manual as the process is not completely straight forward. The best manual is the one from http://www.helminc.com, but if this is the only work you are going to do on the car the Haynes manual would probably suffice. There is a stop screw on the throttle body (close to where the gas wire is) that looks like the idle speed adjustment on carburetors. Do not touch this screw, as it is factory set and is not used to regulate the idle. Face wrote: > > Does anyone know if the idle speed is adjustable or if it's controlled > by the computer? > > I'm getting some fluctuation that I need to get fixed. > > Thanks |
Re: 92 Accord Idle Speed Question
It is adjustable AND controlled by the computer. There is an idle
control screw somewhere on the throttle body. If you have fluctuating idle, you most likely have a vacuum leak somewhere, so try to find this before you adjust anything. Fill up a squirt bottle with water (others recommend using carb cleaner) and spray a fine mist around the various parts of the intake system. When you get a drop in idle speed, you have found the leak. If this does not work, start pinching the various vacuum hoses until you see a drop in RPM. If you do find a hose that allows you to drop the RPM, follow it to look for leaks or faulty valves etc. Another thread dealt with the same issue on a CRX. The original poster in that thread found that his fast idle valve was leaking. It is a thermo-wax valve that allows extra air in while the coolant is cold. His was leaking air all the time. If you do need to adjust anything, first get a shop manual as the process is not completely straight forward. The best manual is the one from http://www.helminc.com, but if this is the only work you are going to do on the car the Haynes manual would probably suffice. There is a stop screw on the throttle body (close to where the gas wire is) that looks like the idle speed adjustment on carburetors. Do not touch this screw, as it is factory set and is not used to regulate the idle. Face wrote: > > Does anyone know if the idle speed is adjustable or if it's controlled > by the computer? > > I'm getting some fluctuation that I need to get fixed. > > Thanks |
Re: 92 Accord Idle Speed Question
Thanks for the info. I'll try what you suggest below.
To be more specific, here is a little more detail on what is happening. When the choke is on everything is fine. When the car has warmed up the idle drops to 700 rpm and the car is idling rough. After a minute or so something happens and the idle increases to 750 or 800 and the engine runs very smooth. I'll start driving again and have to stop at another light and the same thing happens again. In fact i was getting off the freeway yesterday and the same thing happened when I got to the bottom of the off ramp. The idle did correct itself a little more quickly this time though. The car vibrates more than usual when in reverse which I believe is because the front engine mount needs replaced. Other than this the car runs great for 139k miles. Thanks In article <3FF463E4.C68F871E@junkmail.com>, Randolph <trash@junkmail.com> wrote: > It is adjustable AND controlled by the computer. There is an idle > control screw somewhere on the throttle body. > > If you have fluctuating idle, you most likely have a vacuum leak > somewhere, so try to find this before you adjust anything. Fill up a > squirt bottle with water (others recommend using carb cleaner) and spray > a fine mist around the various parts of the intake system. When you get > a drop in idle speed, you have found the leak. > > If this does not work, start pinching the various vacuum hoses until you > see a drop in RPM. If you do find a hose that allows you to drop the > RPM, follow it to look for leaks or faulty valves etc. > > Another thread dealt with the same issue on a CRX. The original poster > in that thread found that his fast idle valve was leaking. It is a > thermo-wax valve that allows extra air in while the coolant is cold. His > was leaking air all the time. > > If you do need to adjust anything, first get a shop manual as the > process is not completely straight forward. The best manual is the one > from http://www.helminc.com, but if this is the only work you are going > to do on the car the Haynes manual would probably suffice. > > There is a stop screw on the throttle body (close to where the gas wire > is) that looks like the idle speed adjustment on carburetors. Do not > touch this screw, as it is factory set and is not used to regulate the > idle. > > Face wrote: > > > > Does anyone know if the idle speed is adjustable or if it's controlled > > by the computer? > > > > I'm getting some fluctuation that I need to get fixed. > > > > Thanks |
Re: 92 Accord Idle Speed Question
Thanks for the info. I'll try what you suggest below.
To be more specific, here is a little more detail on what is happening. When the choke is on everything is fine. When the car has warmed up the idle drops to 700 rpm and the car is idling rough. After a minute or so something happens and the idle increases to 750 or 800 and the engine runs very smooth. I'll start driving again and have to stop at another light and the same thing happens again. In fact i was getting off the freeway yesterday and the same thing happened when I got to the bottom of the off ramp. The idle did correct itself a little more quickly this time though. The car vibrates more than usual when in reverse which I believe is because the front engine mount needs replaced. Other than this the car runs great for 139k miles. Thanks In article <3FF463E4.C68F871E@junkmail.com>, Randolph <trash@junkmail.com> wrote: > It is adjustable AND controlled by the computer. There is an idle > control screw somewhere on the throttle body. > > If you have fluctuating idle, you most likely have a vacuum leak > somewhere, so try to find this before you adjust anything. Fill up a > squirt bottle with water (others recommend using carb cleaner) and spray > a fine mist around the various parts of the intake system. When you get > a drop in idle speed, you have found the leak. > > If this does not work, start pinching the various vacuum hoses until you > see a drop in RPM. If you do find a hose that allows you to drop the > RPM, follow it to look for leaks or faulty valves etc. > > Another thread dealt with the same issue on a CRX. The original poster > in that thread found that his fast idle valve was leaking. It is a > thermo-wax valve that allows extra air in while the coolant is cold. His > was leaking air all the time. > > If you do need to adjust anything, first get a shop manual as the > process is not completely straight forward. The best manual is the one > from http://www.helminc.com, but if this is the only work you are going > to do on the car the Haynes manual would probably suffice. > > There is a stop screw on the throttle body (close to where the gas wire > is) that looks like the idle speed adjustment on carburetors. Do not > touch this screw, as it is factory set and is not used to regulate the > idle. > > Face wrote: > > > > Does anyone know if the idle speed is adjustable or if it's controlled > > by the computer? > > > > I'm getting some fluctuation that I need to get fixed. > > > > Thanks |
Re: 92 Accord Idle Speed Question
Thanks for the info. I'll try what you suggest below.
To be more specific, here is a little more detail on what is happening. When the choke is on everything is fine. When the car has warmed up the idle drops to 700 rpm and the car is idling rough. After a minute or so something happens and the idle increases to 750 or 800 and the engine runs very smooth. I'll start driving again and have to stop at another light and the same thing happens again. In fact i was getting off the freeway yesterday and the same thing happened when I got to the bottom of the off ramp. The idle did correct itself a little more quickly this time though. The car vibrates more than usual when in reverse which I believe is because the front engine mount needs replaced. Other than this the car runs great for 139k miles. Thanks In article <3FF463E4.C68F871E@junkmail.com>, Randolph <trash@junkmail.com> wrote: > It is adjustable AND controlled by the computer. There is an idle > control screw somewhere on the throttle body. > > If you have fluctuating idle, you most likely have a vacuum leak > somewhere, so try to find this before you adjust anything. Fill up a > squirt bottle with water (others recommend using carb cleaner) and spray > a fine mist around the various parts of the intake system. When you get > a drop in idle speed, you have found the leak. > > If this does not work, start pinching the various vacuum hoses until you > see a drop in RPM. If you do find a hose that allows you to drop the > RPM, follow it to look for leaks or faulty valves etc. > > Another thread dealt with the same issue on a CRX. The original poster > in that thread found that his fast idle valve was leaking. It is a > thermo-wax valve that allows extra air in while the coolant is cold. His > was leaking air all the time. > > If you do need to adjust anything, first get a shop manual as the > process is not completely straight forward. The best manual is the one > from http://www.helminc.com, but if this is the only work you are going > to do on the car the Haynes manual would probably suffice. > > There is a stop screw on the throttle body (close to where the gas wire > is) that looks like the idle speed adjustment on carburetors. Do not > touch this screw, as it is factory set and is not used to regulate the > idle. > > Face wrote: > > > > Does anyone know if the idle speed is adjustable or if it's controlled > > by the computer? > > > > I'm getting some fluctuation that I need to get fixed. > > > > Thanks |
Re: 92 Accord Idle Speed Question
Thanks for the info. I'll try what you suggest below.
To be more specific, here is a little more detail on what is happening. When the choke is on everything is fine. When the car has warmed up the idle drops to 700 rpm and the car is idling rough. After a minute or so something happens and the idle increases to 750 or 800 and the engine runs very smooth. I'll start driving again and have to stop at another light and the same thing happens again. In fact i was getting off the freeway yesterday and the same thing happened when I got to the bottom of the off ramp. The idle did correct itself a little more quickly this time though. The car vibrates more than usual when in reverse which I believe is because the front engine mount needs replaced. Other than this the car runs great for 139k miles. Thanks In article <3FF463E4.C68F871E@junkmail.com>, Randolph <trash@junkmail.com> wrote: > It is adjustable AND controlled by the computer. There is an idle > control screw somewhere on the throttle body. > > If you have fluctuating idle, you most likely have a vacuum leak > somewhere, so try to find this before you adjust anything. Fill up a > squirt bottle with water (others recommend using carb cleaner) and spray > a fine mist around the various parts of the intake system. When you get > a drop in idle speed, you have found the leak. > > If this does not work, start pinching the various vacuum hoses until you > see a drop in RPM. If you do find a hose that allows you to drop the > RPM, follow it to look for leaks or faulty valves etc. > > Another thread dealt with the same issue on a CRX. The original poster > in that thread found that his fast idle valve was leaking. It is a > thermo-wax valve that allows extra air in while the coolant is cold. His > was leaking air all the time. > > If you do need to adjust anything, first get a shop manual as the > process is not completely straight forward. The best manual is the one > from http://www.helminc.com, but if this is the only work you are going > to do on the car the Haynes manual would probably suffice. > > There is a stop screw on the throttle body (close to where the gas wire > is) that looks like the idle speed adjustment on carburetors. Do not > touch this screw, as it is factory set and is not used to regulate the > idle. > > Face wrote: > > > > Does anyone know if the idle speed is adjustable or if it's controlled > > by the computer? > > > > I'm getting some fluctuation that I need to get fixed. > > > > Thanks |
Re: 92 Accord Idle Speed Question
Thanks for the scan. I'll download it and take a look at it.
Jeff In article <7PYIb.11369$Vl6.2540843@news20.bellglobal.com>, "Grahame Joyce" <grahame.joyce@sympatico.ca> wrote: > There's an adjustment screw on the throttle body > I have attached a scan of the Haynes manual for this adjustment. > "Face" <face@yahoo.com> wrote in message > news:face-ABCEE8.11394801012004@news-server-fe-02.columbus.rr.com... > > Does anyone know if the idle speed is adjustable or if it's controlled > > by the computer? > > > > I'm getting some fluctuation that I need to get fixed. > > > > Thanks > > > begin 666 idle.tif > [Image] > > end > |
Re: 92 Accord Idle Speed Question
Thanks for the scan. I'll download it and take a look at it.
Jeff In article <7PYIb.11369$Vl6.2540843@news20.bellglobal.com>, "Grahame Joyce" <grahame.joyce@sympatico.ca> wrote: > There's an adjustment screw on the throttle body > I have attached a scan of the Haynes manual for this adjustment. > "Face" <face@yahoo.com> wrote in message > news:face-ABCEE8.11394801012004@news-server-fe-02.columbus.rr.com... > > Does anyone know if the idle speed is adjustable or if it's controlled > > by the computer? > > > > I'm getting some fluctuation that I need to get fixed. > > > > Thanks > > > begin 666 idle.tif > [Image] > > end > |
Re: 92 Accord Idle Speed Question
Thanks for the scan. I'll download it and take a look at it.
Jeff In article <7PYIb.11369$Vl6.2540843@news20.bellglobal.com>, "Grahame Joyce" <grahame.joyce@sympatico.ca> wrote: > There's an adjustment screw on the throttle body > I have attached a scan of the Haynes manual for this adjustment. > "Face" <face@yahoo.com> wrote in message > news:face-ABCEE8.11394801012004@news-server-fe-02.columbus.rr.com... > > Does anyone know if the idle speed is adjustable or if it's controlled > > by the computer? > > > > I'm getting some fluctuation that I need to get fixed. > > > > Thanks > > > begin 666 idle.tif > [Image] > > end > |
Re: 92 Accord Idle Speed Question
Thanks for the scan. I'll download it and take a look at it.
Jeff In article <7PYIb.11369$Vl6.2540843@news20.bellglobal.com>, "Grahame Joyce" <grahame.joyce@sympatico.ca> wrote: > There's an adjustment screw on the throttle body > I have attached a scan of the Haynes manual for this adjustment. > "Face" <face@yahoo.com> wrote in message > news:face-ABCEE8.11394801012004@news-server-fe-02.columbus.rr.com... > > Does anyone know if the idle speed is adjustable or if it's controlled > > by the computer? > > > > I'm getting some fluctuation that I need to get fixed. > > > > Thanks > > > begin 666 idle.tif > [Image] > > end > |
Re: 92 Accord Idle Speed Question
Was ther dist. housing replaced per Honda's extended warrenty? Is
there evidence of rusty junk under the dist cap? (dist bearing going bad) Do the spark plugs have over 50,000 miles on them? bob |
Re: 92 Accord Idle Speed Question
Was ther dist. housing replaced per Honda's extended warrenty? Is
there evidence of rusty junk under the dist cap? (dist bearing going bad) Do the spark plugs have over 50,000 miles on them? bob |
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