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Thread: Cold running problem , truck stalls

  1. #1
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    Default Cold running problem , truck stalls

    My 98 regular cab starts cold and will idle with no
    Problem , when I drive away it stalls usually in a turn
    Find neutral start and pop back to drive. Until it warms up
    Then it’s fine. I changed the tps with a quality unit of NGK assisted development
    Made in Mexico , I was thinking coolant sensor ??
    Any suggestions. The manifold ones I can rob off the red one for testing saving bad guesses
    Look forward to your help and input
    Thanks Bob

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    SPelf's Avatar
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    I had a 3.9l single cab that did something to this very similar. It ended up being that the 2 upstream O2 sensors were shot. Does the truck load up and choke itself or does it just die?
    2003 Dakota R/T CC Flame Red. Bolt ons, Built Trans.
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    It just dies, if I have the room to shift to 2nd it will be fine , the idle control motor will catch it before it
    Before it dies

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    Hi Bob! Is it throwing a code?
    DRTC #1176

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    You may need to reset the stepper motor count . " the IAC is what I'm talking about .
    Unplug the IAC . then plug the vent for the IAC . Then start the engine and adjust the idle set screw to 650 RPM on the tack . Or what ever RPM you want . Turn off motor .restart engine . Let idle for a minute . Repeat .then while the engine is off , plug in the IAC . Then start again this resets the count on the IAC . This will bring up a p0505 code . Erase that and your done .

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    niebs's Avatar
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    Quote Originally Posted by SPelf View Post
    I had a 3.9l single cab that did something to this very similar. It ended up being that the 2 upstream O2 sensors were shot. Does the truck load up and choke itself or does it just die?
    Had the same issue with my 3.9

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    DodgeSqD's Avatar
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    Well my procedure doesn't cost anything .

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    I will try your procedure thanks ,had a mustang gt I had to do it
    Ford racing helped me get a cold idle .

    Is there a vent on idle control valve ? I cleaned them just never seen it
    Replaced

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    Hi Corey , no there is no code . If I try to just drive when it’s cold will go flat
    After 3 times or more will be hard to start , engine loading up with fuel ? But she pulls good up to redline
    Without overdrive !! Been driving it every day . It’s just a cold engine thing , when the thermostat opens it almost always works when hot it’s ok

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