1997 Plymouth Voyager 1997 v6 3.0 rough idle

1997 PLYMOUTH VOYAGER
147,000 MILES • 6 CYL • 2WD • AUTOMATIC
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AMDPAR
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  • 1 POST
The car has P0300,P0301,P0306 only when Idles-after clearing if pressed at highr speed(RPM) the code does not apprear,nor during driving on highway but as soon as you wait at stop/signal in about 30 seconds the light comes ON.Change Pluga,Distrbutor cap and rotor and ignition wires ,had put in new coil,lots of fuel inj cleaners in the tank but will NOT pass the test as CES light is on.Please help
Jan 9, 2010 at 12:59 AM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
If this only happens at an idle, something is telling me to have you check fuel pump pressure to make sure the regulator is working. Here is a how to for checking that:

https://www.2carpros.com/how_to/how_to_check_fuel_pressure.htm

Pay attention to the pressure when you unplug the regulator.

If that checks out okay, then I would say we need to check the crank sensor and the temp sensor.

Let me know what you find with fuel pressure, and thanks for using 2carpros.com.

Joe
Jan 9, 2010 at 9:20 PM
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