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2004 Taurus it cranks but not starts in cold weather


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sungyong2
New User

Feb 9, 2018, 4:24 PM

Post #1 of 4 (374 views)
2004 Taurus it cranks but not starts in cold weather Sign In

My 2004 Ford Taurus (120000 miles) does not start even though it cranks.

The same thing happened several weeks ago when the temperature was below 10F. But at that time, it was automatically fixed as weather getting better and thus it getting thawed.

I am now waiting for it warms up again but I want to know which part is in a problem.

For your information, I recently replaced the starter.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Feb 9, 2018, 5:39 PM

Post #2 of 4 (360 views)
Re: 2004 Taurus it cranks but not starts in cold weather Sign In

 
All "crank, no start" conditions are approached in the same way. Every engine requires certain functions to be able to run. Some of these functions rely on specific components to work and some components are part of more than one function so it is important to see the whole picture to be able to conclude anything about what may have failed. Also, these functions can ONLY be tested during the failure. Any other time and they will simply test good because the problem isn't present at the moment.
If you approach this in any other way, you are merely guessing and that only serves to replace unnecessary parts and wastes money.



Every engine requires spark, fuel and compression to run. That's what we have to look for.

These are the basics that need to be tested and will give us the info required to isolate a cause.

1) Test for spark at the plug end of the wire using a spark tester. If none found, check for power supply on the + terminal of the coil with the key on.


2) Test for injector pulse using a small bulb called a noid light. If none found, check for power supply at one side of the injector with the key on.


3) Use a fuel pressure gauge to test for correct fuel pressure, also noticing if the pressure holds when key is shut off.

4) If all of these things check good, then you would need to do a complete compression test.

Once you have determined which of these functions has dropped out,
you will know which system is having the problem.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



sungyong2
New User

Feb 9, 2018, 8:59 PM

Post #3 of 4 (341 views)
Re: 2004 Taurus it cranks but not starts in cold weather Sign In

Thank you for your advice. I know I cannot simply estimate what happens to my car without proper diagnosis. But based on the fact that it was once automatically fixed when the weather getting better, could you know which part is the most likely involved?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Feb 9, 2018, 9:07 PM

Post #4 of 4 (337 views)
Re: 2004 Taurus it cranks but not starts in cold weather Sign In

Not without using this.....





You really don't know that the weather played a part or it was just a coincidence.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



(This post was edited by Hammer Time on Feb 9, 2018, 9:08 PM)






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