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1998 dodge dakota starts but will not idle all the

Sent to Car Experts October 22 2005 at 7:06 PM
   

1998 dodge dakota starts but will not idle all the time,cuts off when shifted into neutral(auto transmission).....have not checked fuel pressure yet.....bad fuel pump or pressure regulator ?????

Optional Information: 1998 Dodge dakota 3.9 L
Already Tried:
nothing

Customer (name blocked for privacy)
Status:  Closed   Value: $10
Info Request
October 23 2005 at 1:04 AM (5 hours and 57 minutes and 44 seconds later)
         
REPLIED to Info RequestCheck Mark
Is the check engine light coming on?
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Hammer Time -- L1 Master Technician -- 98% Positive Feedback on 2719 Car Accepts
ASE Mastertech with Adv level Engine performance cert.
Reply
October 23 2005 at 3:28 AM (2 hours and 24 minutes and 13 seconds later)
         
Reply to Hammer Time's Post: no check engine light,truck has about 80,000 miles,bought about 6 mos ago,I do have a fuel pressure guage and I am a pretty good "driveway" mechanic
Customer (name blocked for privacy)
Answer
October 23 2005 at 3:38 AM (10 minutes and 21 seconds later)
         
ACCEPTEDCheck Mark

You can go ahead and check the fuel pressure, even if only to eliminate that as a problem. I somewhat doubt that's your problem as it would show up more as cruise speeds.

You may have a bad IAC ( idle air control) but try cleaning the throttle body first. Remove the intake snorkel, have someone hold the throttle wide open for you and scrub the back side of the throttle plate and surrounding bore with an old tooth brush and some carb cleaner. Be sure to spray some into the small holes next to the throttle plate. That should help stabilize the idle.

Also remove the EGR valve and see if the pintle is not closing due to a piece of carbon jamming it. Check the engine real good for any vacuum leaks. Listen for the hissing and you can use a can of carb cleaner to help look for leaks. Spray any suspect area's and listen for a change in engine pitch.

Picture
Hammer Time -- L1 Master Technician -- 98% Positive Feedback on 2719 Car Accepts
ASE Mastertech with Adv level Engine performance cert.
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