Car stalls when driving and when at a stop

Tiny
BILLRUZ
  • MEMBER
  • 2006 CHRYSLER 300
  • 5.7L
  • V8
  • RWD
  • AUTOMATIC
  • 260,000 MILES
Vehicle stalls at idle, on highway all speeds, stop lights. Will restart most times.
Both fuel pumps replaced, gas tank replaced by Chrysler, new battery, new computer, all grounds checked, all fuses replaced. Check engine light comes on once in a while but not regular. (Lost communication code). I have had it to several mechanics and no fix yet. Motor was replaced at 175,000 miles by Chrysler.
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Wednesday, February 22nd, 2017 AT 3:19 PM

4 Replies

Tiny
CARADIODOC
  • EXPERT
For my clarity, are you saying the engine will stop running while you are driving at highway speed? If it only stalls at low speeds, when it should idling, there is an easy fix for that. If it does indeed stall at higher speeds, there should be a diagnostic fault code related to that. It is important to not disconnect the battery before reading the codes, because doing so will erase them, then that valuable information will be lost.
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Wednesday, February 22nd, 2017 AT 3:35 PM
Tiny
BILLRUZ
  • MEMBER
It will stall/cut out at all speeds. Sometimes it will run twenty to thirty miles and have no issue. Other times it will stall out idle long in the driveway. It does this randomly.
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Wednesday, February 22nd, 2017 AT 3:43 PM
Tiny
BILLRUZ
  • MEMBER
It does not give codes all the time, it cuts out or stalls. Very rarely it gives codes. Two codes were lost communication. Lost communication to transmission.
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Wednesday, February 22nd, 2017 AT 3:58 PM
Tiny
CARADIODOC
  • EXPERT
With no fault codes to point to the circuit that needs to be diagnosed, you need a scanner with "record" capability so you can record a snapshot of what is occurring during a test-drive, when the problem acts up. Because the data passes through the scanner's memory, the recording actually starts a few seconds before the "record" button is pressed. That data can be played back slowly, later, to see what changed.

On older vehicles the crankshaft position sensor and camshaft position sensor were the common causes of this. They are still good suspects, but it is odd there has never been a fault code set related to them.
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Wednesday, February 22nd, 2017 AT 5:49 PM

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