98 Dodge ram, 5.9 surging
Engine surges at idle speed.
We believe all vacuum lines are sound.
Sensors seem to be sound. No sure on voltages.
That is the same problem I'm having. I had my up and down stream O2 sensors and gas cap replaced and it stops for a few weeks then starts again only in the morning when warming it up. Very annoying to hear and think it's going to cut off but it always evens out after 10-15 seconds. I am thinking it a vaccum leak because my gas mpg has gotten worse. If you do find the fix please posts. I am thinking of going by the dealer and paying the 125.00 diagnostics test fee but they are so slow to get anything done.
Sorry I have a 03 Dodge Ram 4.7 SLT
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