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2004 Concorde LXI starting issue

  #1  
Old 05-27-2014, 06:03 PM
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Default 2004 Concorde LXI starting issue

When the car is cold it starts right up. After it is warmed up and you shut it off, it is a bear to start. It will turn over but will not start. Sometimes if you turn it all the way to off and try again it will start, sometimes it takes 6 or 7 times before it will start. I had it checked out today at a local shop. Everything tested out ok fuel pressure ect. Also, no check engine light is coming on and it is throwing no codes. Timing belt was changed 4K ago. Please help.
 
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Old 05-27-2014, 07:11 PM
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define hard starting not spin over or take long time to start or what details.
 
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Old 05-27-2014, 07:42 PM
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Sorry I didn't explain it very well. When the car is cold, been sitting 3 hrs or longer it starts just fine. After it is warmed up and shut off, it will turn over just fine but will not start. If you turn the key to off and try again it may start or it may take up to 7 trys to get it to start. There is no loss of power when running, or stalling out. In fact it runs real smooth. I had it to the local shop and there were no codes stored. I have not got a check engine light. The fuel pressure was tested and was fine.
 
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Old 05-28-2014, 11:21 AM
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Fuel Pressure stated as OK. Must be 58 +- 5 at all times. Leave gauge on, run engine to temp and shut off for a few hours. It must hold. Have seen some leak down when hot (fuel regulator in tank fail to properly seat when hot)
Next Throttle body/ IAC (Idle Air Control) may need to be removed and cleaned. Crusty IAC may stick when hot causing hard/ no start.
Both above cost next to nothing to do.
Hate to say throw parts at it but we have seen cases where Crank and or Cam sensors fail when hot and not setting codes. If you change them use OEM only as aftermarket ones do not last.
 
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Old 05-28-2014, 08:26 PM
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Ok, I have apt on the 6th with it. I will post results. If all else fails I will replace both sensors.
 
  #6  
Old 06-25-2014, 07:12 PM
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Well I had the Crankshaft Sensor replaced with A OEM replacement. No change. I ordered a new OEM Camshaft sensor today. Will keep updated with the results of that replacement
 
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Old 07-02-2014, 05:29 PM
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Update: I replaced both the Camshaft Sensor and the Crankshaft Sensor with OEM parts. The problem continues. Specifically, when the car is cold ( sitting 2 hrs or longer) it starts right up. After it is warm and shut off for longer than a couple of minutes it will turn over but will not start. You need to do a key dance shut off wait 30 seconds then try again. After 3 or so tries it will start. Fuel pressure has been tested and is good. The car runs great, to stalling, bucking , loss of power ect. PLEASE HELP
 
  #8  
Old 07-02-2014, 05:37 PM
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NO stalling ect
 
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