| Author |
Message |
ega
Guest
|
 Posted:
Wed Jan 19, 2005 11:40 pm Post subject:
Cavalier 98 fast idle when cold |
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Hi,
I have a little annoying problem with a Cavalier 98 2.2L. When the
temperature is very cold (let say below -20C) it stays on fast idle + -
1000RPM all the time. Usually the idle gradually goes down to + - 600RPM as
the engine warms up. If I turn off/on engine after it has reached it
temperature it idle normally at 600RPM.
Back to the first years with the car, the idle was reaching 1500RPM for 1-2
seconds when turned on, 1000RPM until warms up and then 600RPM. One thing I
noticed is now it only reach 1000RPM when turned on and then 600RPM at
normal temperature except during very cold days obviously.
Cooling sensor has been changed but no difference. I suspect the problem to
be at the ECM level. Any other idea?
EGA
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Woody
Guest
|
| Posted:
Thu Jan 20, 2005 4:07 am Post subject:
Re: Cavalier 98 fast idle when cold |
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RPM is determined by engine temperature. If the engine temperature stays
cold the rpm will stay high. It is cold outside so it takes longer to warm
up. If the thermostat isn't working correctly it could take longer to warm
up or may never warm up enough. The heater on full will also cause it to
take longer to warm up. Change the thermostat and if that doesn't work try
blocking part of the radiator. You may not be driving far enough or fast
enough to ward the engine.....
"ega" <someone@somewhere.com> wrote in message
news:csm9ik$2kg$1@dns3.cae.ca...
| Quote: | Hi,
I have a little annoying problem with a Cavalier 98 2.2L. When the
temperature is very cold (let say below -20C) it stays on fast idle + -
1000RPM all the time. Usually the idle gradually goes down to + - 600RPM
as the engine warms up. If I turn off/on engine after it has reached it
temperature it idle normally at 600RPM.
Back to the first years with the car, the idle was reaching 1500RPM for
1-2 seconds when turned on, 1000RPM until warms up and then 600RPM. One
thing I noticed is now it only reach 1000RPM when turned on and then
600RPM at normal temperature except during very cold days obviously.
Cooling sensor has been changed but no difference. I suspect the problem
to be at the ECM level. Any other idea?
EGA
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| Back to top |
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ega
Guest
|
| Posted:
Thu Jan 20, 2005 6:59 pm Post subject:
Re: Cavalier 98 fast idle when cold |
|
|
The car reach normal temperature (90C) even during very cold days. The
thermostat has been replaced 1 1/2 year ago and the problem was occuring
before that. I usually drive about 35KM to work every day and sometime the
car is still ideling at ~1000rpm after a 1h30 drive in heavy traffic. When I
said "all the time" I really meant it.
If I turn off/on after reaching (90C) then it goes back to normal ~600rpm.
This combined with the fact it no longer reach ~1500rpm for few sec when
first turn on make me believe something is really not working properly.
"Woody" <TheDuck@pond.net> wrote in message
news:8LBHd.17099$_X7.4865@newssvr33.news.prodigy.com...
| Quote: | RPM is determined by engine temperature. If the engine temperature stays
cold the rpm will stay high. It is cold outside so it takes longer to warm
up. If the thermostat isn't working correctly it could take longer to warm
up or may never warm up enough. The heater on full will also cause it to
take longer to warm up. Change the thermostat and if that doesn't work try
blocking part of the radiator. You may not be driving far enough or fast
enough to ward the engine.....
"ega" <someone@somewhere.com> wrote in message
news:csm9ik$2kg$1@dns3.cae.ca...
Hi,
I have a little annoying problem with a Cavalier 98 2.2L. When the
temperature is very cold (let say below -20C) it stays on fast idle + -
1000RPM all the time. Usually the idle gradually goes down to + - 600RPM
as the engine warms up. If I turn off/on engine after it has reached it
temperature it idle normally at 600RPM.
Back to the first years with the car, the idle was reaching 1500RPM for
1-2 seconds when turned on, 1000RPM until warms up and then 600RPM. One
thing I noticed is now it only reach 1000RPM when turned on and then
600RPM at normal temperature except during very cold days obviously.
Cooling sensor has been changed but no difference. I suspect the problem
to be at the ECM level. Any other idea?
EGA
|
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|
| Back to top |
|
|
Woody
Guest
|
| Posted:
Fri Jan 21, 2005 4:04 am Post subject:
Re: Cavalier 98 fast idle when cold |
|
|
You need an OBD2 tester to analyze the rest of the sensors. Could be vacuum
leak or many other conditions.
"ega" <someone@somewhere.com> wrote in message
news:csodfh$jkb$1@dns3.cae.ca...
| Quote: | The car reach normal temperature (90C) even during very cold days. The
thermostat has been replaced 1 1/2 year ago and the problem was occuring
before that. I usually drive about 35KM to work every day and sometime the
car is still ideling at ~1000rpm after a 1h30 drive in heavy traffic. When
I said "all the time" I really meant it.
If I turn off/on after reaching (90C) then it goes back to normal ~600rpm.
This combined with the fact it no longer reach ~1500rpm for few sec when
first turn on make me believe something is really not working properly.
"Woody" <TheDuck@pond.net> wrote in message
news:8LBHd.17099$_X7.4865@newssvr33.news.prodigy.com...
RPM is determined by engine temperature. If the engine temperature stays
cold the rpm will stay high. It is cold outside so it takes longer to
warm up. If the thermostat isn't working correctly it could take longer
to warm up or may never warm up enough. The heater on full will also
cause it to take longer to warm up. Change the thermostat and if that
doesn't work try blocking part of the radiator. You may not be driving
far enough or fast enough to ward the engine.....
"ega" <someone@somewhere.com> wrote in message
news:csm9ik$2kg$1@dns3.cae.ca...
Hi,
I have a little annoying problem with a Cavalier 98 2.2L. When the
temperature is very cold (let say below -20C) it stays on fast idle + -
1000RPM all the time. Usually the idle gradually goes down to + - 600RPM
as the engine warms up. If I turn off/on engine after it has reached it
temperature it idle normally at 600RPM.
Back to the first years with the car, the idle was reaching 1500RPM for
1-2 seconds when turned on, 1000RPM until warms up and then 600RPM. One
thing I noticed is now it only reach 1000RPM when turned on and then
600RPM at normal temperature except during very cold days obviously.
Cooling sensor has been changed but no difference. I suspect the problem
to be at the ECM level. Any other idea?
EGA
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