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Vehicles have compensation systems to increase the rpm when the AC is loading the engine, and slowing it down. Newer cars idle speed often isn't adjustable, so the problem's in the ECM (computer) or a sensor.
With an older vehicle, simply bump up the idle speed a little. Usually a 1/8 or so, turn on the adjusting screw will do it.
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∙ 13y ago
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My civic rpm drops to500 rpm and turns off?
When the RPM of a car drops down and stall there is an issues with the air fuel ratio. The engine should be checked for vacuum leaks,
Why your vortec 5.3 shakes in low rpm?
If a Vortec engine shakes or rumbles at low RPMs it likely needs a timing adjustment. It would also simply need a tuneup.
Hyundai Elantra 2000 check engine light on. Engine shakes in low RPM. Started right after refueling.?
Water in fuel? Have vehicle scanned to determine the problem
You have ford escape xlt When you accelerate and the tachometer goes over 3 RPM while the car is in P the engine shakes Can somebody tell you why?
Because they stop to run RPM in the motor, that has a sensor in the motor.
Your 1987 Honda accord lx rpm meter drops 1-2 lines below the 1 after starting and turns off and hard to start up Please help?
maybe there is not enough gas getting to the engine so...a clocth
What happens when wankle engine shaft turns at three times its rotor RPM?
the turtle wins the race
My 2001 Mustang V6 shakes whenever I stop while the ac is on RPM needle goes down and up while it shakes.?
If the check engine light is or has illuminated, check for codes first otherwise start with a basic tune up.
What does peak torque means in truck?
"Peak Torque" is RPM of engine that produces the most torque. For example the 'peak torque' on a Ford 6.0L Powerstroke Diesel is 570 ft-lbs@ 2000 rpm. In an engine, especially a diesel, higher rpm does not necessarily mean more torque. Fact is, it drops at a higher rpm than 2000.
Why does oil pressure drop when engine is hot and idling?
The oil thins when hot and the oil pump is driven off the engine so, the lower the engine rpm's, the slower the pump turns.
What is the RPM of C240 engine?
the rpm of a c240 engine is 2000rpm
Whole Car shakes over 2.5 rpm on every gear. NOT tires. What's Wrong?
Try engine mounts. That could be the cause. If in gear and auto may be the torque converter.
Why does car stall when RPM drops?
The rpms need to be high enough to keep the engine running. Most engines need at least 850 rpms to keep from stalling.
