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1992 Mercury Sable

Tiny
DNNYFARQUHARSON
  • MEMBER
  • 1992 MERCURY SABLE
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 50,000 MILES
My sable starts fine on warm days but on cold mornings I have to crank it over for a long time it putts and putts then I hold the peddle to the floor and eventually it starts and then after I start it I can turn it off and the car will start all day long no problem
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Friday, December 5th, 2008 AT 9:03 PM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the fuel pressure and also test the engine coolant temperature sensor/throttle position sensor-
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Friday, December 5th, 2008 AT 9:07 PM
Tiny
DNNYFARQUHARSON
  • MEMBER
  • 5 POSTS
Does the coolent temp sensor tell the computer to give more gas or air or is that not what it does
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Friday, December 5th, 2008 AT 10:22 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
The CTS is just like a choke on the carburetor-it tells the computer to increase fuel -a cold engine needs more fuel during cold starts. After the CTS switches to closed loop the oxygen takes over on controlling fuel demand.
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Friday, December 5th, 2008 AT 11:40 PM

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