The rpm tag has no wiki summary.
7
votes
3answers
503 views
Is it harmful to drive at high rpms
Does driving at high RPMs (3000-3500) in a manual transmission car cause any extra wear and tear to any mechanical parts? It obviously hurts gas mileage, but does it hurt anything else?
4
votes
3answers
203 views
Does accelerating faster worsen fuel efficiency?
I've often heard that accelerating harder makes for bad fuel efficiency, but have yet to be given a sound explanation of why. Naturally this makes me question this advice. Now obviously when you ...
4
votes
1answer
220 views
Engine revs up when braking
Background: 2012 Honda Civic EX, 5-speed automatic, with no mods except a non-stock tire (ran over a large bolt). I keep it maintained per the manufacturer's manual and always see the Honda dealership ...
3
votes
1answer
53 views
1980 Suzuki GS 850 trouble at high rpms
I have a 1980 Suzuki GS 850 and I am having a problem where the rpms spike when I really get on the throttle. If I slowly accelerate there is no problem, everything runs smoothly. When I'm on the ...
3
votes
2answers
94 views
Do all engines typically support the installation of a crankshaft position sensor
I have recently purchased an 800cc dune buggy but unfortunately it doesn't come with a RPM sensor so I have been looking at my options in terms of installing one. In the process I have found that the ...
2
votes
3answers
82 views
What modifications need to be made to an engine to enable higher safe RPMs?
I first had this question while playing a racing game - it was a touring race with BMW 320i's, and I noticed that I could rev up to 8,500 RPM before shifting gears. Now my car (an older 320i), ...
2
votes
2answers
154 views
Is alternator rating at pulley rpm or engine rpm?
I just got a new alternator for my jeep that says 160amps at 2k rpm. Is this rating for the pulley rpm on the alternator - or is it the rpm of the engine?
Also, if the pulley is spinning slower than ...
1
vote
1answer
95 views
Tachometer doesnt show correct RPM sometimes
On my Honda CBF 150cc , the Tachometer shows RPM correctly when i'm at a constant speed. But some times when i slow down and accelerate the RPM Needle moves unexpectedly. (say to 0 even i'm at a ...
1
vote
1answer
38 views
Subaru Outback 1998 high idle rpms and CEL P0507
My wife's 1998 Subaru Outback threw a check engine light the other day, and when I read the code, P0507, it corresponded to a problem I'd noticed for a while: high idle rpms. The problem is most ...
0
votes
1answer
71 views
Typically in what RPM range should one manually downshift an automanual transmission?
Related to this question and TMN's answer: What's a good RPM range to safely downshift an automanual transmission manually? My car does it for me when the RPMs get really low, but that throws me off ...
