resonating noise at 40km/h in 1st
June-23rd-2002, 09:14 AM
#1
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resonating noise at 40km/h in 1st
my mom owns a 99 pro 1.6 and it makes a strange resonating sound at 40km/h when you csuise in 1st gear. it doesn't have a tach so i dunno what rpm its at. it sounds like something internal in the engine, like a valve or a piston vibrating. strange thing is, it goes away when you floor the gas. you can only hear it when you hold it at that rpm. has anyone had the same problem? should i even be worried? oh, and one more question. the car is under warranty, but i do all the maintanance, like oil changes and brakes and such. will mazda not fix my car, because i do not have the maintanance book stamped by a mechanic?
June-23rd-2002, 01:27 PM
#2
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Location: Centennial, Colorado
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Re: resonating noise at 40km/h in 1st
Originally posted by oregano
my mom owns a 99 pro 1.6 and it makes a strange resonating sound at 40km/h when you csuise in 1st gear. it doesn't have a tach so i dunno what rpm its at. it sounds like something internal in the engine, like a valve or a piston vibrating. strange thing is, it goes away when you floor the gas. you can only hear it when you hold it at that rpm. has anyone had the same problem? should i even be worried? oh, and one more question. the car is under warranty, but i do all the maintanance, like oil changes and brakes and such. will mazda not fix my car, because i do not have the maintanance book stamped by a mechanic?
my mom owns a 99 pro 1.6 and it makes a strange resonating sound at 40km/h when you csuise in 1st gear. it doesn't have a tach so i dunno what rpm its at. it sounds like something internal in the engine, like a valve or a piston vibrating. strange thing is, it goes away when you floor the gas. you can only hear it when you hold it at that rpm. has anyone had the same problem? should i even be worried? oh, and one more question. the car is under warranty, but i do all the maintanance, like oil changes and brakes and such. will mazda not fix my car, because i do not have the maintanance book stamped by a mechanic?
June-23rd-2002, 10:34 PM
#5
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i didnt really mean "cruising" in first. i've simply noticed the sound before and found out it only happens when you keep it at 40 km/h in first, or 80 in second. it wont happen when you accelerate through that point quickly. im definately gonna have mazda look at it.
June-24th-2002, 02:01 AM
#7
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Location: Centennial, Colorado
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Originally posted by Ambient
WTF, 80 in second?
Like everyone else said, SHIFT. Your car is straining at that speed in such a low gear. Take it to Mazda so they can laugh and tell you the same thing.
WTF, 80 in second?
Like everyone else said, SHIFT. Your car is straining at that speed in such a low gear. Take it to Mazda so they can laugh and tell you the same thing.
June-24th-2002, 03:19 AM
#8
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Join Date: Oct 2001
Location: Canada (formerly Yugoslavia)
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80 km/h is like 50 mph.......
dude, that's way too high......
here's the question, do you have a tachometer in your car? The one that tells you how many rpms you're driving at? If you do, then you shouldn't really be maintaining anything close to the redline for a long time.
SHIFT UP!!!!
dude, that's way too high......
here's the question, do you have a tachometer in your car? The one that tells you how many rpms you're driving at? If you do, then you shouldn't really be maintaining anything close to the redline for a long time.
SHIFT UP!!!!
June-24th-2002, 05:03 PM
#9
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GODDAMNIT!I dont have a tach and yes i do know im straining the engine. im not goin past redline so why is my engine falling apart? doesn't it get strained when im ripping it full gas up to 100 km/h in second? oh sorry, i forgot, you only understand miles. i meant 62 miles per hour(redline for second gear). Point is, why duz it only happen when i go past that point slowly at partial throttle?
June-24th-2002, 05:38 PM
#10
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Location: Hampton, VA
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Originally posted by oregano
Point is, why duz it only happen when i go past that point slowly at partial throttle?
Point is, why duz it only happen when i go past that point slowly at partial throttle?
farguifn tufkjgker cansjfithl chaka khan furher*
*translation: SHIFT UP
June-24th-2002, 06:51 PM
#12
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I dont have a tach and yes i do know im straining the engine. im not goin past redline so why is my engine falling apart?
June-24th-2002, 06:52 PM
#13
Cripple Fight!!!!
Join Date: Nov 2001
Location: Northern VA
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apparently our good friend oregano here likes to rev his engine to get that TOP-END POWER from every gear. Let him keep revving it up going 80kph(50mph) in SECOND gear, waste fuel, and have a nice and unnecessarily noisy ride 
I mean, doesn't loud = fast??? so he must be mad fast y0 cruising in 2nd gear at 50mph
my $.02 cdn
man people are getting testy in here
(huh huh, i said testy, huh huh)
I mean, doesn't loud = fast??? so he must be mad fast y0 cruising in 2nd gear at 50mph
my $.02 cdn
man people are getting testy in here
(huh huh, i said testy, huh huh)
June-24th-2002, 06:56 PM
#14
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Join Date: May 2002
Location: San Diego, CA
Posts: 372
Hmmm... wierd noises coming from an engine spinning right around 6,000rpm? Do you realize your pistons are being slammed up and down at the rate of 60 feet per second? Multiply that by 4 pistons and add a crankshaft, flywheel, alternator, AC compressor, power steering pump, water pump, and oil pump that are spinning so fast you can grind metal with them, and I have no idea why there's any strange noises.
Is it hurting the engine to drive like this. No, probably not. Will you hear strange sounds? Yes, you probably will. I'm sure Mazda engineers didn't spend very much time fine-tuning the resonance sound of the engine held at part-throttle at 6,000rpm. I'm sure they figured the 1.6L would not be driven like this or even close to this. They designed that engine for fuel economy.
Please shift sooner unless your under full throttle... the sounds of the 1.6L at those RPMs is rather unbearable.
-Jerry
Is it hurting the engine to drive like this. No, probably not. Will you hear strange sounds? Yes, you probably will. I'm sure Mazda engineers didn't spend very much time fine-tuning the resonance sound of the engine held at part-throttle at 6,000rpm. I'm sure they figured the 1.6L would not be driven like this or even close to this. They designed that engine for fuel economy.
Please shift sooner unless your under full throttle... the sounds of the 1.6L at those RPMs is rather unbearable.
-Jerry
June-24th-2002, 07:02 PM
#15
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SPACE ACE
most cars are designed to top out at 100km/h(62mph), in second gear. this is done so that the car can reach that speed without having to shift to third gear. this gives it a quicker 0-60 time, which is what manufactureres use to tell the performance of their vehicles.