05 Hard Start?

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Mar 6, 2019 | 11:10 AM

A70Runner

Thread Starter

Joined: Jun 2018

Posts: 10

From: NC

05 Hard Start?

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

Changed wires and plugs about 10k ago.

thanks!

May 20, 2019 | 11:51 PM

jetmec

Joined: Mar 2019

Posts: 6

From: none

Hi it could be the warm up valve on the fuel injection system

May 21, 2019 | 02:12 PM

Derf00

Gentleman's Relish

Joined: Feb 2005

Posts: 13,189

From: AZ

Quote:

Originally Posted by jetmec

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.

May 21, 2019 | 02:41 PM

jetmec

Joined: Mar 2019

Posts: 6

From: none

Quote:

Originally Posted by Derf00

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

May 21, 2019 | 03:36 PM

artsvettes73

2nd Gear Member

Joined: Oct 2011

Posts: 193

From: NJ

Quote:

Originally Posted by jetmec

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