What causes prop slippage?
There are many factors that affect prop slip including the actual pitch of the propeller, the condition of the propeller, the design of the hull, the condition of the bottom of the craft, additional weight on the craft, distribution of weight, height the engine is mounted at, engine trim angle and setback, jack plate …
Should my prop spin freely in neutral?
No it shouldn’t be able to spin freely when it’s in gear. When u put it in forward and u turn it u should have to really pull on it to get it to go around.
What should I do about the RPM fluctuation?
Even though the RPM fluctuation drives me a bit mad, it only occurs at low speeds in automatic. Manually shifting and chanting “serenity now” (Seinfeld) helps. Mechanically, the transmission is operating fine and I can’t justify spending $5k – $6k to have a new transmission installed.
What are the RPMs of a car at 45 mph?
RPM’s rapidly fluctuate up and down even when on a flat road under constant throttle, speed and load. For example, RPM’s quickly move from 1,250 to 1,500 at 45 MPH. This problem has been ongoing for two years (and driving me a bit mad). The condition is most pronounced when traveling between 15 and 45 MPH.
Why do the RPMs go up and down at constant speed?
It’s like the rpms are surging up and down but only between 30mph and 50mph. Then it levels off as I gain speed The RPMs surging under a constant speed in that 30-50mph band certainly sound like a torque converter lockup problem. It sounds like the torque converter is locking and unlocking again and again.
What are the RPM’s of a car under constant throttle?
RPM’s rapidly fluctuate up and down even when on a flat road under constant throttle, speed and load. For example, RPM’s quickly move from 1,250 to 1,500 at 45 MPH. This problem has been ongoing for two years (and driving me a bit mad).
What happens if your rpm fluctuates while driving?
Apart from the RPM fluctuates while driving, a bad TPS would cause issues like an unstable engine when idle, acceleration issues, high fuel consumption, etc. A TPS could be diagnosed by a mechanic only as it requires disassembling of various components. So, if you observe any of these signs in your car, take your car to a mechanic.
When do I stop at red light RPM drops?
But when i stop at light rpm drop to 500. And feels like its going to shit off. My car has 80455 miles. My car has an automatic transmission. This may be a sign of a failing idle air control valve.
What happens when engine RPM drops below 800?
However, when the engine RPM drops below the normal range of 800 RPM (for most cars), it is more than likely that you are dealing with an IAC valve problem. In cases where this valve is clogged or is failing, your vehicle will stall instead of slowing to an idle after the release of the throttle.
What does it mean when your rpm jumps on deceleration?
At slow speeds, less than 25 mph, I can actually feel the car accelerate, which is a weird feeling when the car speeds up without the gas being pressed down. The increase in RPM used to be really bad, the jump would be very noticeable. I took it to a mechanic, they put their finger over the pcv valve, and told me to go buy one from the dealer.