Low RPM (revolutions per minute) in an engine can be caused by several factors, including insufficient fuel supply, clogged air filters, or malfunctioning sensors that affect the air-fuel mixture. Additionally, issues with the ignition system, such as faulty spark plugs or ignition coils, can prevent the engine from reaching optimal RPM. Mechanical problems, such as worn-out components or excessive load on the engine, can also contribute to low RPM. Regular maintenance and diagnostics are essential to identify and resolve these issues.
it only studders at low rpm it runs great at high rpm or accelerating only at idle and take off rpm
The battery light tells you the system is not charging, if it comes on at idle or low rpm it is likely a weak or failing alternator. The idle being too low can also cause it to come on.
Many things can cause lag while driving at a low RPM but not at a high RPM even if it is not the vacuum hose disconnected from the EGR valve as it could be the fuel filter. It can also be the park plugs.
Low RPM. Gear is too high for travel speed
It will idle as low as 600 rpm.It will idle as low as 600 rpm.
cause the coolant temp is low , automobiles tend to do that when there cold
No, but a bad alternator will.
I would check the radiator cooling fan first. Make sure it is coming on when you turn on the AC. If it is, then you may have a weak compressor. The reason is that a weak compressor may not provide enough prssure at low engine RPM's, but may be sufficient at high RPM's. Another possibility is low refrigerant. This will also cause too low of operating pressure at low RPM's, but could be sufficient pressure at higher RPM's.
You May Have a misfire if Check Engine Light is on Have it Scanned or possibly a dirty Mass Air Sensor
It could cause a low rpm misfire/stumble/die off.
any answer .......
ck cat