2001 ford ranger xlt 4.0 V6 manual

Start the truck in park and it runs fine. Put truck in gear and start to accelerate and when truck gets over 2000rpm it will not drop back down. Go to shift and engage clutch still no drop in rpm (sometimes jump 500-1000rpm) move gear into neutral and truck will keep at 2000rpm or more(even if below 2000rpm I shift to neutral and truck will automatically increase rpm till reaches 2000 then pins. (No check engine light or codes)

1.checked acceleration cable and it’s snag free no impingement s

2. Checked cruise control cable and it’s snag free no impingement (disconnect cruise cable and drove around to see if possible leak in vac to cruise allowing plate to hold open )

3. Cleaned throttle body and plate with wire brush and throttle body cleaner(looks brand new now)

4.checked throttle plate spring and still tight (plate opens and closes without impingement

5. Replaced air filter

6. Checked all hoses for vacuum leak. No visible leaks.(unplugged IAC when idle truck stalled out leading me to think also no big leaks in vac system

7. Cleaned mass airflow sensor with mass airflow cleaner

8. Replaced Idle Air Control Valve

9. Replaced Throttle Position sensor

10. Replaced PCV valve and checked elbows for cracks

11.added sea foam to engine

12. Computer dusted cleaned wire plugins to all intake sensors

13. Reset ecu ( disconnected neg battery connection, left positive connection still on battery. Ran jumper cable from disconnected neg connection to the positive connection still on battery. Let sit for 30 mins to drain power to grounds, put key in car waited 30 seconds. Started let sit 10 mins to relearn idle then drove for 15 mins cycling through all gears


Still pinning at 2000rpm in neutral and during shifting of gears( rpm will stay at whatever it’s at during gear shift leading to rough shift and rpm to drop when in gear and take foot off clutch.

 

Just to confirm, its a manual transmission so there is no "Park"
Does your speedometer work?

Emissions require that a manual trans engine, while in motion, remains above 1,500rpms, when speedometer drops under 5MPH then RPMs can drop down to idle levels, 750-800

RPMs should stay the same when shifting, another emissions thing, but if you leave the clutch pedal down 7 or 8 seconds RPMs should drop a little, but not down to idle levels until speedometer is under 5MPH

2,000rpms sounds high, I would call a Ford Dealer and have them look up your VIN to see if there is a software update for the computer, there were issues in the early 2000's with Ford computers holding RPMs too high in manual trans vehicles, a software glitch, you have to pay for the update if there is one, its well out of warranty

I assume the CEL(check engine light) works, comes on with key on and then goes off after engine starts?
Just checking, I know you said no CEL, but didn't say that it worked, lol