Can you blow up a motor by the revolutions being up to high driving down the road?
Yes, every engine has a "red line." If there is an RPM guage, the redline is clearly marked by red numbers. If you redline it too much, you can tear it up. But under normal conditions, that shouldn't be occurring. About the only way to redline one is to be drag racing, or just revving it constatntly in nuetral, and most new cars have a "governor" built into the PCM that will not allow you to redline it.
Yes, you can. Many cars do not have a built in rev limiter and/or are equipped with a transmission allowing the driver to select the gear ratio. This makes it possible to reach very high engine speeds. SSome things that can happen at excessive engine rotational speeds:
-Oil film can break down at high pressure locations such as between cam and lifters/followers, main bearings, and rod bearings. This is equivalent to running the engine without oil. This is bad.
-Valve float - Valve springs can fail to close the valves fast enough and in an interference (non-freewheeling) engine this can cause impact damage between piston and valve.
-As engine speed increases, so do forces on connecting rods. Connecting rods can break, but it is more likely to break a rod bearing bolt. In either case, this can hammer internal engine parts causing additional damage in a fraction of a second. Shrapnel can exit at dangerously high speeds. Block and crank are usually scrap metal at this time. Fires can occur.
-Torsional forces can shear the crankshaft. The crankshaft becomes unbalanced and can weld itself at the main bearings. Pistons closer to the front of the engine lose their load and can briefly accelerate to even higher speeds, possibly breaking rods. Pistons at the rear end lose time with the valves and can impact them. Dangerous shrapnel can be ejected from the engine. Fires can occur.
It is usually best to operate the engine only at speeds specified by the manufacturer. The engineers who designed the engine have determined that this speed is safe.
Why would the fan on a Cadillac DeVille not blow air or heat if you can hear the AC cycling and the AC lines are cold?
No; turning it off stops the fuel supply and spark ignition cycle. It does not cause the engine to immediately absorb the energy that was being produced, so there is not enough energy to stress anything to the point of fracturing. Turning the engine off at full throttle has the same effect as turning the engine off at half throttle except there are more revolutions per minute (RPMs) being generated, so it takes longer to…
first of all i hate to say an obvious answer but does the heater motor even turn. Does it blow air at all. The first thing i would check is if the fan motor is blowing any air at all. If not u need to put in a new heater fan motor. first of all i hate to say an obvious answer but does the heater motor even turn. Does it blow air at all…
Da 1993 was da slower cherokee. or.......you may have a defective wiper arm or a wiper motor that is about shot. Usually the motor either works or it does not though. Check the motor and wiper arm drive train for garbage that might be hanging it up around the hood and under. If it is too restricted the fuse will blow. Who knows, with Jeeps maybe even your windshield will catch on fire eventually. I…
Why is my 97 Monte Carlo losing power while driving and making a tapping clicking ticking noise in the motor?
There's supposed to be oil IN the motor, not ON it. A little black sludgy residue (called "blow-by") is normal after a while. If the oil is wet or dripping on your engine block, it is likely you have a serious seepage problem, probably a valve cover gasket. Driving with the oil fill cap off will also create a mess in short order.
Why does the ac in 1995 Honda accord blow but does not blow air in the car just put new fan motor and had heater core cleaned out why want cold air blow in the car?
Why would a 1985 305 engine blow out a little white smoke while ideling and blow out a lot of smoke while the motor is reveing up?
It gives you all the blower motor speeds except high. all blower motors are 12 volt, so on full speed they turn fast and blow a lot of air, to make the fan turn slower [and blow less air] they route the power through a resister, it drops the voltage to the motor so turns slower, on a 4 speed motor there will be 3 resisters.