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05 Hard Start?

Old 03-06-2019, 11:10 AM
  #1  
A70Runner
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Join Date: Jun 2018
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Default 05 Hard Start?

My daughters 05 4.0 Mustang is slow to start when itís cold. Seems like it takes a long time cranking to start. (Almost like a cold diesel). When itís warm it starts right up. Not throwing any codes. Anyone else ever have this problem?

Changed wires and plugs about 10k ago.

thanks!
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Old 05-20-2019, 11:51 PM
  #2  
jetmec
 
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Hi it could be the warm up valve on the fuel injection system
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Old 05-21-2019, 02:12 PM
  #3  
Derf00
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Originally Posted by jetmec View Post
Hi it could be the warm up valve on the fuel injection system
The what? No such thing on a mustang of any year. That type of part is usually found on older German vehicles.
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Old 05-21-2019, 02:41 PM
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jetmec
 
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Originally Posted by Derf00 View Post
The what? No such thing on a mustang of any year. That type of part is usually found on older German vehicles.
Yes there is! It might have another name but it's the fuel injection equivalent of a choke, basically it provided more fuel at start up when the engine is cold
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Old 05-21-2019, 03:36 PM
  #5  
artsvettes73
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Originally Posted by jetmec View Post
Yes there is! It might have another name but it's the fuel injection equivalent of a choke, basically it provided more fuel at start up when the engine is cold
Sorry, No such animal on the Mustang
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