Jeremymyers1988
Junior Member
New to the forum here and jumping right into a problem I cannot solve. The RPM's in my 04 5.7L 5spd has recently started to hang indefinitely between shifts. If I shift into neutral at any RPM it will stay at that RPM until I go to a complete stop then it goes back down to idle. This happens in every gear and every rpm. I initially thought my throttle body was sticking so I replaced it, then a vacuum leak but I couldn't find one by spraying carb cleaner around all vacuum fittings. Also it has zero hesitation at any RPM or when driving.
When I bought the truck I would shift and go into neutral the RPM's would raise 300-500 or so then drop. I didn't think much of it but it no longer does that now since this new issue.
In the last year I've replaced the cats, o2 sensors, muffler, map sensor, spark plugs, coil packs, and various other sensors.
Is there any reason my RPM's would be hanging in neutral only when moving? I did do a quick test today going down the road about 15 miles an hour by putting the truck in neutral when it was hanging at 2k RPM's, turned the engine off and restarted. The truck went to about 1K then jumped back to to 2K while still in neutral. I may try this again tomorrow on a back road to confirm that I'm not crazy.
I hope I'm missing something simple and someone can make me feel stupid here.
When I bought the truck I would shift and go into neutral the RPM's would raise 300-500 or so then drop. I didn't think much of it but it no longer does that now since this new issue.
In the last year I've replaced the cats, o2 sensors, muffler, map sensor, spark plugs, coil packs, and various other sensors.
Is there any reason my RPM's would be hanging in neutral only when moving? I did do a quick test today going down the road about 15 miles an hour by putting the truck in neutral when it was hanging at 2k RPM's, turned the engine off and restarted. The truck went to about 1K then jumped back to to 2K while still in neutral. I may try this again tomorrow on a back road to confirm that I'm not crazy.
I hope I'm missing something simple and someone can make me feel stupid here.