Need help asap

Asked by Mar 14, 2017 at 12:19 AM about the 2003 Dodge Ram 1500 Laramie Quad Cab LB

Question type: Maintenance & Repair

Just replaced oil and flushed coolant and replaced
serpentine belt in my 2003 dodge ram 1500 4.7l
laramine. Now it idles incredibly high at startup
and stays that way. On crank it starts at almost
1800 rpm. ..I have tried everything I can think I
please help.

3 Answers

Should probably mention that when Iput it in drive it gets down to 1100 rpm and while coasting it will pull itsself to 45mph. Please help


You may have a vacuum leak in the PVC fitting, if you can't see or hear it feel around by it (as you have a 4.7, the PVC is near the back of the intake). A lot of times when you do a lot of work like changing a serpentine belt you can bump hoses and fittings and if they are old, brittle, or just heat damaged they can leak. (PS the only reason RPMs drop when in gear is from loading the engine)


Make sure you put the oil filler cap back on. Any air getting into the engine that is not being metered by the MAF sensor can do this.

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