What does it mean when your rpm goes up at low speeds?
This is the RPM increase you see on the rev-counter and is what happens in normal operation. If this happens at low speeds, you should allow the repairer you used to check the vehicle, if only to re-assure yourself. Sounds like the transmission is slipping.
What kind of car revs up and down?
Rpm revving up and down while driving around 50-60mph. Hello. I have a 2002 Trailblazer LTZ. When I am driving usually I notice around the speeds of 50-60 mph my car revs up and you can watch the rpm’s go up and down.
Why does my car rev up at low speeds?
This is the RPM increase you see on the rev-counter and is what happens in normal operation. If this happens at low speeds, you should allow the repairer you used to check the vehicle, if only to re-assure yourself. This is probably the most likely answer, because they said no metal shavings were found in the transmission fluid or filter.
Why does my transmission rpm keep climbing up?
It seems that the gears are slipping and causing the rpm’s to climb up. Check the transmission fluid and make sure that it’s full and red in color. Very dark red or black transmission fluid is an indication that the transmission is burning the fluid for getting too hot from either overloading or slipping gears.
Why does the engine RPM drop when shifting?
Sometimes the engine RPM drop when shifting automatic gearbox is caused by incorrect ignition timing. In case of the premature ignition, the air-fuel mixture is ignited when the piston is still moving upwards. Expanded gases impede movement of the piston and the whole crankshaft. In this situation, the fuel consumption is useless.
When to shift engine to 7, 000 or 8, 000 rpm?
For example, if the converter stalls at 6,700 rpm, the engine should be shifted at around 8,000 rpm. Shifting this engine at 7,000 rpm would simply put the engine back on the converter, causing the converter to operate inefficiently and wasting horsepower by heating the transmission fluid.
What should the engine speed be after a gear change?
With an automatic transmission, the engine speed should ideally drop 1,000 to 1,300 rpm after a gear change. For example, if the converter stalls at 6,700 rpm, the engine should be shifted at around 8,000 rpm.
What to do when your engine RPM drops?
Engine have fuel problem . Somewhere the fuel drop then suddenly rpm decrease better check the complete fuel system from tank to injectors also check the rpm sensor . Was this answer helpful? check fuel pressure between fuel pump and injectors. you may have a fuel pump that is about to fail.