Prius (2004-09) :: Ticking Noise At High Speed
Aug 1, 2010
I've got an '04 Pkg IX with about 68k miles on it.
I've noticed that at speeds of greater than 60mph there is a distinct ticking noise (like the sound a bicycle makes when you turn the wheel "tick tick tick"). The noise is coming from the front end, sounds like near the passenger area.
The minute you drop down to speeds of around 50 or less it goes away.
I'm probably going to have to take it in to the dealer since I've already had an indy look at it.
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EVCT transmission noise ....
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However, the car is making a ticking noise every minutes or so. The sound is originating in the Hybrid Synergy Drive converter inverter box and about every minute for about 5 or 7 seconds or so there will be a ticking or clicking noise. This happens when the car is idling, driving, and even a minute or two after car was shut off. The mechanic next door to the dealer didn't know what it is and the dealer is giving me a 30 day. What could this clicking be?
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This started just today. I have a strange ticking noise coming from right behind my gauge cluster. The frequency of the ticking is tied directly to my speed. It begins when I drive off and slows to a stop when I stop (almost like a "baseball card in a bicycle spoke" sound, but just not as loud). What this might be? Could it have something to do with the speedometer? Odometer?
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I have a tick in my 2001 V10, 190,000 (mostly easy) miles. I've changed oil/filter regularly at 3,000 mile intervals using Valvoline 5W20.
The tick seems to be on the passenger side of the engine, and is loudest when the engine is cold. It follows engine speed. The tick seems to be loudest as the engine transitions from acceleration to deceleration when I lift the throttle--I've NOT seen that posted before.
So, an exhaust manifold leak seems to be the most obvious? I installed a Banks Power Pack with Torque Tube headers in 2009 (about 90,000 miles ago) using thread lock compound on the supplied bolts and torqued to the instructions--I don't' remember the torque setting, but will look it up. I've listened to each exhaust port with a mechanic's stethoscope, all I hear is a smoothly running rotating assembly! Same result with the stethoscope on either side of the front cover (for timing chain slap.) NO tick through the stethoscope! I plan to check all the header bolts' torque this weekend, but don't really expect to find a problem. I will also scoot under the truck and recheck all the exhaust pipe clamps.
I've also listened to all the injectors--two of them (#3 and #4) were noticeably quieter than the other eight. But, none of them stood out as being particularly noisy. I've seen a couple of threads here that asked what a normal injector should sound like, but never an answer. How they should sound?
I've listened to each coil. I can hear a slight arc on #3. I believe the spring in the boot is not seated on the coil tab correctly (happened before.) I will correct that this weekend also. Nothing sounded like a loose plug, though I don't really know what that would sound like with the stethoscope.
What else could/should I check to avoid removing the valve/cam covers? (For cam follower or rocker trouble). I don't mind doing that, but don't want to go to the trouble and then find it wasn't necessary. I may spin on a Motorcraft filter (I'm just 800 miles into the last oil change now, I usually use Fram) but the tick stays with me until the engine is normal operating temperature, so I don't think it is from bleed back.
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The front driver's side wheel of my 2007 Ext. Cab makes a speed-related "ticking" sound. It's usually audible but not always there. I look for rocks in the tread of my BFG All-Terrains and sometimes I find some, sometimes not. The noise seems to be independent although some of the rocks really get up in there. Sometimes its really loud and it sounds like a rock. Bearing? 4WD CV or U-Joints or whatever?
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Is this something I need to get looked at by the dealership? I had a local mechanic that worked on my old Honda beater take a look and he said that the rotors and brake pads looked new and wasn't sure why they'd make noise.
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