Intermittent starting issues

DODGETREE

MEMBER
2006 DODGE MAGNUM
89,000 MILES

After driving to a few stores, I would get in the and go to start it and everything seems like it’s normal and nothing will not start. After letting it sit for 15- 20 minutes it starts just fine.

Sunday, September 15th, 2019 AT 5:08 AM

7 Replies

JACOBANDNICKOLAS

MECHANIC
108,254 POSTS

Welcome to 2CarPros.

The most common cause of a vehicle not starting when it is hot or has been driven is a bad crankshaft position sensor. When they begin to fail, heat causes the internal winding to separate which results in spark loss to the ignition system.

Take a look through these links. The first explains what the component is, the second explains symptoms, and the last shows in general how one is replaced.

https://www.2carpros.com/articles/how-a-crank-shaft-angle-sensor-works

https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor

https://www.2carpros.com/articles/crankshaft-angle-sensor-replacement

If that seems to mirror what you have experienced, let me know the engine size and I will provide the directions for replacement specific to your vehicle. If it doesn't seem the same, let me know and we will move to plan B. LOL

Take care,
Joe

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Sunday, September 15th, 2019 AT 7:04 PM

DODGETREE

MEMBER
4 POSTS

Thank you Joe.
I will work with plan A and up date you when have a solid out come or let you know if plan B is needed.

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Wednesday, September 18th, 2019 AT 2:34 PM

JACOBANDNICKOLAS

MECHANIC
108,254 POSTS

Welcome back:

You're welcome. Let me know and we'll go from there.

Take care,
Joe

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Thursday, September 19th, 2019 AT 7:40 PM

DODGETREE

MEMBER
4 POSTS

Here we go again same issue as last year hot day; many stops and get in turn the key and nothing, the dash lights came on as normal and I knew it wouldn’t start as before due to I did not hear the fuel pump pre load. After reading a lot off post at magnumfourmz, I found someone describing the same symptoms and 1- reply he got was vague but they mentioned something in the ignition didn’t make a good connect not sure if good info or not. As usual 5 minutes later car started with no problem, this is getting fun! Any thoughts?
Thank you!

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Saturday, August 29th, 2020 AT 4:42 PM

JACOBANDNICKOLAS

MECHANIC
108,254 POSTS

Hi,

Is the starter engaging? Let me know the engine size as well.

As far as what you described, it could the auto shut down relay or again the crankshaft position sensor. I'm not sure what helped the last time.

I attached a couple pics below. If the starter engages and you don't hear the pump, switch the ASD relay with a different one in the relay box and see if it makes a difference. Also, make sure there isn't any corrosion or a loose connection.

Let me know.
Joe

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