1997 Manual 4x4 2.7L Troubleshooting

Hey guys, I don't know if these problems have anything to do with each other or not, but any advise would help.

1. My truck idles high. Instead of staying around 700 RPMs, it has been getting up to 1500 when I press the clutch, or put it into neutral.

2. It "stutters" when I let off the gas. When I am on the interstate and going at a high rate of speed (60-70 mph), and let off of the gas, the truck acts like I'm in too low of a gear and slows down.

3. Grinds when I put it into certain gears. When I put it to 1st, 2nd, or 3rd, there was a grinding noise when I moved the shifter into place. Sometimes it happens, and sometimes it doesn't.

Like I said, anything would help!
Thanks!

 

Any recent modifications?

Also, do you have the same stuttering problem when you take off as well or only at a high constant speed?

 

No, I haven't done any mods to it.

Also, it seems that it is only when I am at a high speed.

What do you think?

 

Check your throttle position sensor for smooth operation/resistance. Clean your MAF.