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Erractic Idle
Hi 1999 honda civic 1.4i just replaced throttle body with new
sensors,flushed rad topped up again,start motor in morning sits at 1500 rev,s comes down to 1100 then jumps up and down when fan kicks in goes down to 800 stop at junction it goes up and down between 1100 and 1500 help required thanks. |
Re: Erractic Idle
merc9 wrote:
> > Hi 1999 honda civic 1.4i just replaced throttle body with new > sensors,flushed rad topped up again,start motor in morning sits at 1500 > rev,s comes down to 1100 then jumps up and down when fan kicks in goes > down to 800 stop at junction it goes up and down between 1100 and 1500 > help required thanks. ---------------------------------------------- You've got AIR in the system, and it won't leave until you fill the reservoir to MAX, and top it up two or three days in a row. The rad cap allows the system to sip coolant from the reservoir as the engine cools. If there's not enough coolant in the reservoir, it can't displace the air it's trying to expel. This was covered just a couple weeks ago. SEARCH is a handy tool, since you dont' have to wait for an answer. 'Curly' |
Re: Erractic Idle
merc9 wrote:
> > Hi 1999 honda civic 1.4i just replaced throttle body with new > sensors,flushed rad topped up again,start motor in morning sits at 1500 > rev,s comes down to 1100 then jumps up and down when fan kicks in goes > down to 800 stop at junction it goes up and down between 1100 and 1500 > help required thanks. ---------------------------------------------- You've got AIR in the system, and it won't leave until you fill the reservoir to MAX, and top it up two or three days in a row. The rad cap allows the system to sip coolant from the reservoir as the engine cools. If there's not enough coolant in the reservoir, it can't displace the air it's trying to expel. This was covered just a couple weeks ago. SEARCH is a handy tool, since you dont' have to wait for an answer. 'Curly' |
Re: Erractic Idle
merc9 wrote:
> > Hi 1999 honda civic 1.4i just replaced throttle body with new > sensors,flushed rad topped up again,start motor in morning sits at 1500 > rev,s comes down to 1100 then jumps up and down when fan kicks in goes > down to 800 stop at junction it goes up and down between 1100 and 1500 > help required thanks. ---------------------------------------------- You've got AIR in the system, and it won't leave until you fill the reservoir to MAX, and top it up two or three days in a row. The rad cap allows the system to sip coolant from the reservoir as the engine cools. If there's not enough coolant in the reservoir, it can't displace the air it's trying to expel. This was covered just a couple weeks ago. SEARCH is a handy tool, since you dont' have to wait for an answer. 'Curly' |
Re: Erractic Idle
merc9 wrote:
> > Hi 1999 honda civic 1.4i just replaced throttle body with new > sensors,flushed rad topped up again,start motor in morning sits at 1500 > rev,s comes down to 1100 then jumps up and down when fan kicks in goes > down to 800 stop at junction it goes up and down between 1100 and 1500 > help required thanks. The cooling system should have a bleed screw which you can open when the engine's cool in order to get the air out. Here's a description of the bleeding procedure using the '95-'97 Civic as an example. http://media.honda.co.uk/car/owner/m...l/pdf/10-4.pdf Eric |
Re: Erractic Idle
merc9 wrote:
> > Hi 1999 honda civic 1.4i just replaced throttle body with new > sensors,flushed rad topped up again,start motor in morning sits at 1500 > rev,s comes down to 1100 then jumps up and down when fan kicks in goes > down to 800 stop at junction it goes up and down between 1100 and 1500 > help required thanks. The cooling system should have a bleed screw which you can open when the engine's cool in order to get the air out. Here's a description of the bleeding procedure using the '95-'97 Civic as an example. http://media.honda.co.uk/car/owner/m...l/pdf/10-4.pdf Eric |
Re: Erractic Idle
merc9 wrote:
> > Hi 1999 honda civic 1.4i just replaced throttle body with new > sensors,flushed rad topped up again,start motor in morning sits at 1500 > rev,s comes down to 1100 then jumps up and down when fan kicks in goes > down to 800 stop at junction it goes up and down between 1100 and 1500 > help required thanks. The cooling system should have a bleed screw which you can open when the engine's cool in order to get the air out. Here's a description of the bleeding procedure using the '95-'97 Civic as an example. http://media.honda.co.uk/car/owner/m...l/pdf/10-4.pdf Eric |
Re: Erractic Idle
"merc9" <rickyhamill@aol.com> wrote in
news:7bcea274c034331823e4d13c18c86e3c@localhost.ta lkaboutautos.com: > Hi 1999 honda civic 1.4i just replaced throttle body with new > sensors,flushed rad topped up again,start motor in morning sits at 1500 > rev,s comes down to 1100 then jumps up and down when fan kicks in goes > down to 800 stop at junction it goes up and down between 1100 and 1500 > help required thanks. > Fast idle valve coolant passages are blocked. Or you've got an air leak somewhere else. -- TeGGeR® The Unofficial Honda/Acura FAQ www.tegger.com/hondafaq/ |
Re: Erractic Idle
"merc9" <rickyhamill@aol.com> wrote in
news:7bcea274c034331823e4d13c18c86e3c@localhost.ta lkaboutautos.com: > Hi 1999 honda civic 1.4i just replaced throttle body with new > sensors,flushed rad topped up again,start motor in morning sits at 1500 > rev,s comes down to 1100 then jumps up and down when fan kicks in goes > down to 800 stop at junction it goes up and down between 1100 and 1500 > help required thanks. > Fast idle valve coolant passages are blocked. Or you've got an air leak somewhere else. -- TeGGeR® The Unofficial Honda/Acura FAQ www.tegger.com/hondafaq/ |
Re: Erractic Idle
"merc9" <rickyhamill@aol.com> wrote in
news:7bcea274c034331823e4d13c18c86e3c@localhost.ta lkaboutautos.com: > Hi 1999 honda civic 1.4i just replaced throttle body with new > sensors,flushed rad topped up again,start motor in morning sits at 1500 > rev,s comes down to 1100 then jumps up and down when fan kicks in goes > down to 800 stop at junction it goes up and down between 1100 and 1500 > help required thanks. > Fast idle valve coolant passages are blocked. Or you've got an air leak somewhere else. -- TeGGeR® The Unofficial Honda/Acura FAQ www.tegger.com/hondafaq/ |
Re: Erractic Idle
On Fri, 26 May 2006 21:53:58 +0000 (UTC), "TeGGeR®"
<tegger@tegger.c0m> wrote: >"merc9" <rickyhamill@aol.com> wrote in >news:7bcea274c034331823e4d13c18c86e3c@localhost.t alkaboutautos.com: > >> Hi 1999 honda civic 1.4i just replaced throttle body with new >> sensors,flushed rad topped up again,start motor in morning sits at 1500 >> rev,s comes down to 1100 then jumps up and down when fan kicks in goes >> down to 800 stop at junction it goes up and down between 1100 and 1500 >> help required thanks. >> > > >Fast idle valve coolant passages are blocked. Or you've got an air leak >somewhere else. I had surging idle....warm or cold.....turned out the intake gasket had slipped out of place and allowed massive vacume leak. |
Re: Erractic Idle
On Fri, 26 May 2006 21:53:58 +0000 (UTC), "TeGGeR®"
<tegger@tegger.c0m> wrote: >"merc9" <rickyhamill@aol.com> wrote in >news:7bcea274c034331823e4d13c18c86e3c@localhost.t alkaboutautos.com: > >> Hi 1999 honda civic 1.4i just replaced throttle body with new >> sensors,flushed rad topped up again,start motor in morning sits at 1500 >> rev,s comes down to 1100 then jumps up and down when fan kicks in goes >> down to 800 stop at junction it goes up and down between 1100 and 1500 >> help required thanks. >> > > >Fast idle valve coolant passages are blocked. Or you've got an air leak >somewhere else. I had surging idle....warm or cold.....turned out the intake gasket had slipped out of place and allowed massive vacume leak. |
Re: Erractic Idle
On Fri, 26 May 2006 21:53:58 +0000 (UTC), "TeGGeR®"
<tegger@tegger.c0m> wrote: >"merc9" <rickyhamill@aol.com> wrote in >news:7bcea274c034331823e4d13c18c86e3c@localhost.t alkaboutautos.com: > >> Hi 1999 honda civic 1.4i just replaced throttle body with new >> sensors,flushed rad topped up again,start motor in morning sits at 1500 >> rev,s comes down to 1100 then jumps up and down when fan kicks in goes >> down to 800 stop at junction it goes up and down between 1100 and 1500 >> help required thanks. >> > > >Fast idle valve coolant passages are blocked. Or you've got an air leak >somewhere else. I had surging idle....warm or cold.....turned out the intake gasket had slipped out of place and allowed massive vacume leak. |
Re: Erractic Idle
Thanks everybody problem solved,new thermostat.
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Re: Erractic Idle
Thanks everybody problem solved,new thermostat.
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