It's lean.
Referred to as lack of fuel. Either intake leaks, clogged injectors, old fuel filter, worn out 02 sensors, fuel pump/wiring or inadequate fuel system.
Lots of things can cause this condition.
We need to know the year, make and engine to help you.
Sounds like you have a faulty thermostat. Its nothing expensive on hard to replace.
The year, make, model and engine size would help us answer that one for you.
Check your vacuum lines this usually the cause for a surge in engine speed when idling or running.
It is normal for a carburetor to "suck air" when you are starting the engine or while the engine is running. You should stop the engine before repairing the carburetor for safety reasons.
You would need to bring a lawsuit in court and obtain a judgment lien in your favor. Then, you could record the lien against the property of the defendant.
I will fix it
Is the engine tapping when running? If not, check the oil level. If the oil level is at the full mark on the dip stick, then check the oil sending switch. My just need to replace it. Easy fix if that is your problem.
You need a engine scaner so you can scan the transmission. so you can see whats going on with it. CHECK THE FLUID If engine is running bad it can cause the trans. to act up badly. Need to fix engine running problem first if that's the case.
Could just be throttle plate sticking--without engine running try to free with a screwdriver Could just be throttle plate sticking--without engine running try to free with a screwdriver
the carb is not getting enough fuel
with engine not running,turn key to on then put transmission in neutral then start engine this will usually fix the problem also check fuses there is one fuse that will cause the lockout if fuse is blown