The RPMs drop low then return When decelerating driving without pedal

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rrb6699

Senior Member
Joined
May 31, 2018
Posts
157
Reaction score
12
Location
Orlando FL
Ram Year
1996
Engine
5.2 / 318
This is not a problem at this time but I feel it could be a problem. Truck idles fine sitting still or in park and when I give it gas it seems to accelerate fine, however, when I let off the gas doing any speed at all even 20 miles per hour, RPMs and idle drop very low while I'm coasting then waiver back and forth 200 RPMs sometimes more..

any idea if this could be a sensor? If so, which sensor should I take a look at.? It seems the computer is having a hard time determining or maintaining a steady idle when I coast with no gas.

when I was going through the truck after I first bought it I clean the O2 sensors with wire brush Etc.. bought newplug wires, plugs, rotor cap, rotor, Etc. also had to get a new crank sensor.

I did not change any of this stuff for this issue, just upgrading parts.

although it's not an issue now I don't want it dropping more and potentially stalling.

Any input appreciated.
 
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