|
|
|
|
Joined: Nov 2001
Posts: 198
Member
|
OP
Member
Joined: Nov 2001
Posts: 198 |
I have a cel light that only comes on when the car is first started in the mornings. After the car warms up after awhile the light turns off. The car runs perfect..... Any ideas.
An ounce of prevention provides a pound of cure!
|
|
|
|
|
Joined: Mar 2002
Posts: 1,040
Member
|
|
Member
Joined: Mar 2002
Posts: 1,040 |
Time to live up to your sig and get your car plugged into a code reader, which is the only way to find the precise cause.
98 Mystique LS v6 atx 110,000km
97 Contour LX v6 atx 125,000km
stock CD on LS, cass on LX
spoiler, tinted windows on LS only
4 wheel discs on LX only
All other available options on both
|
|
|
|
|
Joined: Jul 2000
Posts: 156
Member
|
|
Member
Joined: Jul 2000
Posts: 156 |
My theory (THEORY) is an O2 sensor. It's not working right until it actually is warmed enough. That is causing the emissions to go out of the acceptable range UNTIL it heats up enough... O2 sensors don't work until hot, did ya know that? Some even have their own internal heater...
Could also be the Cat, as that is heat sensitive too. Cat's don't work until they reach some astronomical temp like 500 or something...
randy
|
|
|
|
|
Joined: May 2000
Posts: 3,934
Member
|
|
Member
Joined: May 2000
Posts: 3,934 |
I didn't think that the car started using the O2 sensors for readings until it was up to operating temps.
Use the code reader though. It would be the only way.
· Jon Miconi
· 96 Contour Zetec ATX
· 80 Ramcharger 360 ATX
· 77 Ramcharger 440 ATX
|
|
|
|
|
Joined: Jun 2000
Posts: 2,481
Member
|
|
Member
Joined: Jun 2000
Posts: 2,481 |
This problem sounds like a starting issue, so you might want to check plugs, wires, alternator, battery, or/and starter.
99 Range Rover 4.6 HSE
Mystery Car??????
|
|
|
|
|
Joined: May 2000
Posts: 702
Administrator
|
|
Administrator
Joined: May 2000
Posts: 702 |
Originally posted by AA737-823:
My theory (THEORY) is an O2 sensor. It's not working right until it actually is warmed enough. That is causing the emissions to go out of the acceptable range UNTIL it heats up enough... O2 sensors don't work until hot, did ya know that? Some even have their own internal heater...
Could also be the Cat, as that is heat sensitive too. Cat's don't work until they reach some astronomical temp like 500 or something...
randy The PCM doesn't look at O2 sensor values until the ECT sensor reports a certain coolant temp. Only way to know is to get the code retrieved. -Lance
Lance Kinley
CEG Webmaster
95SE, "Official CEG Beater"
Quaife, SVT parts, ST200 wheels, SS Y-pipe
I perceive you to be a stand-up, rational individual...
|
|
|
|
|
|
|
