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Stalling when cold

Tiny
GUMBY61
  • MEMBER
  • 2004 FORD ESCAPE
  • 3.0L
  • V6
  • 4WD
  • AUTOMATIC
  • 150,000 MILES
When I start it in the morning it idles fine, but if I don't let it warm up in the driveway, it will stall out within a half a mile. Once it reaches 1/4 or higher on the temperature gauge it will never die for the entire day. Also, this only happens in the mornings when the vehicle has been sitting for over eight to ten hours. I have replaced all plugs, all coils, all intake gaskets, fuel filter, PCV valve, and power steering pressure switch. There are no error codes. Any thoughts? Would a dirty throttle body and IAC cause this issue?
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Monday, December 17th, 2018 AT 10:05 AM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon,

The first thing I would do is change the thermostat. the engine needs to be at 195 or the fuel mapping will be off causing all kinds of issues.

https://www.2carpros.com/articles/how-an-engine-thermostat-works

Yes, the throttle body should be cleaned of all carbon as well.

https://www.2carpros.com/articles/throttle-actuator-service

Check it IAC. remove the wires from it while the engine is running and the idle should drop to 500 rpm. there is no cleaning this. it needs to be replaced if it is not working correctly.

Roy
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Monday, December 17th, 2018 AT 10:15 AM

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