My truck has a miss to it at around 1500 rpms. It will go down to 1200 rpms and back up to 1500 rpms. And than it will go up 1800 rpms and than back down to 1500 rpms.
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I would suggest a specific order, first, check for vacuum leaks especially at the PCV and the hoses connecting. Then clean the Mass Air Flow sensor, after these easy things it gets more difficult with the plug connectors, plugs and coils.
If you mean the sending unit, clean the area around it first. Then run the engine at between 1500 to 1800 rpms for about 5 minutes. That should tell you whether or not you do have seepage from the sending unit.
it sounds like a vacuum leak to me, my car had the same problem but when i changed the hose that connected the valve cover to the fuel injectors the rpms dropped back down to about 800 rpms
It sounds like your low on fluid, or your transmission filter is dirty and the front pump is not getting enough oil supply. Worst is your front pump is going bad.
Check the fluid level and see if it's burnt. Good luck
is the check engine light on?
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