Will not start

Tiny
RODNEY HALL2
  • MEMBER
  • 2007 FORD FREESTYLE
  • 3.0L
  • V6
  • 2WD
  • AUTOMATIC
  • 271,000 MILES
My vehicle was running great then while driving it started to sputter and shut off but would start back up. Got it home will not start up. Replaced crankshaft position sensor and camshaft position sensor still no start. I tried to check for spark could tell I did the starting fluid into throttle body. I thought maybe gas, so I replaced fuel filter. With both new filter and starting fluid no fire. I must also note I didn't relearn the new crankshaft position sensor as I don't have the machine to do it.
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Saturday, January 30th, 2021 AT 1:36 PM

7 Replies

Tiny
KENNY K
  • EXPERT
The sputtering out points to a fuel issue so we need to pursue this a little more.

Let's start with checking the fuel pressure and make sure you have proper pressure. Here is a guide that will help with this:

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

If the pressure is ok then we need to go after the spark that may not be there. When you pulled the plug did you hold it against the block and crank the engine? If so, you need to see a strong blue spark. If you did not see that then we have an ignition issue. So let's make sure we double check this because if we are not sure it will send us down the wrong path.

https://youtu.be/dCjmRL3p4Cs

As for not relearning the crank, that is ok for now. It should not prevent the start. It may cause some running issues but not a no start.

Lastly if we prove out that we have fuel and spark or weak spark, we need to change the plugs as they may fouled which will cause a no start as well. So if there was a crankshaft position sensor issue and you fixed it, then we may have fouled plugs now. When the engine cranks with no spark but has fuel, it fouls the plugs and causes them to have a weak or no spark.

Thanks
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Sunday, January 31st, 2021 AT 3:17 PM
Tiny
RODNEY HALL2
  • MEMBER
I tried the spark plug to engine block with new plug on coil and new spark plug no spark at all.
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Sunday, January 31st, 2021 AT 6:34 PM
Tiny
RODNEY HALL2
  • MEMBER
I also replace ignition switch thinking it was it but forgot to unhook battery.
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Sunday, January 31st, 2021 AT 6:36 PM
Tiny
KENNY K
  • EXPERT
Okay. If we have no spark and the CKP and CMP sensor have been replaced then we need to make sure the theft light is not on (doubtful but just making sure).

If this is not a theft issue then I suspect we have an issue with the PCM but we should have some codes to confirm this. So I would not recommend replacing it until we get codes and go from there.
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Monday, February 1st, 2021 AT 7:40 PM
Tiny
RODNEY HALL2
  • MEMBER
No codes and theft light not on.
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Tuesday, February 2nd, 2021 AT 5:21 AM
Tiny
RODNEY HALL2
  • MEMBER
I had it towed to Car X and it ended up being the pigtail going to the crankshaft sensor. So its up and running. Thank you for your help.
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Tuesday, February 2nd, 2021 AT 10:53 AM
Tiny
KENNY K
  • EXPERT
That is great info. Thanks for the update and I am sure that will help others. Thanks for using 2CarPros.
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Tuesday, February 2nd, 2021 AT 7:16 PM

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