- #4235 of 4532
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Re: Another Noise Question [gcoluni]
by mazdalemon
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Feb 29, 2008 (11:49 am)
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Replying to: gcoluni (Feb 28, 2008 3:36 pm)
If you see my other posts, I've had ongoing problems so the dealership ended up covering the cost of the replacement intake manifold. At first they thought my replacement engine was acting up but after two painful weeks of working on the engine and importing a Mazda tech from another dealership, they found the noise to be the butterfly valves in intake manifold. I'm coming up on my first 3K oil change and the car is very quiet. I guess, I would trust them. I've seen other postings referencing this issue. Good Luck! Let me know how you make out.
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- #4236 of 4532
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Speed3 Fuel Injector noise
by networkguy
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Mar 01, 2008 (12:16 pm)
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I can hear a ticking noise when idling that sounds similar to a baseball card in the spokes of a bicycle wheel. It increases in speed with revs. It's not what one would ordinarily consider a 'healthy' sound. The tech at the dealership says it's coming from the high pressure fuel injectors and that all the DISI engines make the same noise. After owning it for a year, I can't say I've noticed any real problem with the engine, but the noise seems louder than when I bought it. Anybody else with a Mazdaspeed 3, MS6 or CX7 hearing this same kind of noise?
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- #4237 of 4532
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Re: Speed3 Fuel Injector noise [networkguy]
by roadburner
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Mar 01, 2008 (8:32 pm)
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Replying to: networkguy (Mar 01, 2008 12:16 pm)
Anybody else with a Mazdaspeed 3, MS6 or CX7 hearing this same kind of noise?
Only when I'm outside the car; my MS3 has 12.5K on it.
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- #4238 of 4532
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Re: Speed3 Fuel Injector noise [roadburner]
by networkguy
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Mar 02, 2008 (8:47 am)
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Replying to: roadburner (Mar 01, 2008 8:32 pm)
Thanx for the response. They didn't have another MS3 on the lot for me to listen to the day I had mine checked. I can only hear it outside the car or with the windows down too.
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- #4239 of 4532
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Re: Speed3 Fuel Injector noise [networkguy]
by roadburner
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Mar 02, 2008 (3:28 pm)
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Replying to: networkguy (Mar 02, 2008 8:47 am)
I can only hear it outside the car or with the windows down too.
Noises can drive you nuts. Several years ago at a HPDE I missed a shift in my 3 Series and saw the tach needle go 1000 rpm past the redline. I pulled into the pits and listened to the motor- I could swear it was making a loud ticking noise I hadn't heard before. Fortunately a friend was there with an identical car; she pulled it up next to mine and guess what? They sounded identical. And 105,000 miles later the car is still running strong...
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- #4240 of 4532
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Re: Speed3 Fuel Injector noise [roadburner]
by networkguy
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Mar 02, 2008 (5:20 pm)
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Replying to: roadburner (Mar 02, 2008 3:28 pm)
With the exception of a warranty covered CEL, the car has been flawless. I'm just shy of 15,000 miles. The explanation given by the tech sounded plausible, considering the pressure at the injectors. It's just when I hear the phrase 'They all do that', it triggers the 'blowing me off' alarm. Since I'm the only one I know with this model, it's really nice to hear some confirmation from a fellow enthusiast who is not on Mazdas payroll . Thanx again.
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- #4241 of 4532
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Re: Speed3 Fuel Injector noise [networkguy]
by roadburner
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Mar 02, 2008 (5:36 pm)
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Replying to: networkguy (Mar 02, 2008 5:20 pm)
With the exception of a warranty covered CEL, the car has been flawless. I'm just shy of 15,000 miles.
That's been my experience as well. I've had one CEL, and it went off on its own. I later had the shutter valve recall, so that probably fixed the problem for good. My biggest problem is deciding whether to get the Mazdaspeed CAI or the Cobb SRI...
In any event, I'm glad I was able to help.
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- #4242 of 4532
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Re: Speed3 Fuel Injector noise [roadburner]
by networkguy
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Mar 02, 2008 (8:21 pm)
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Replying to: roadburner (Mar 02, 2008 5:36 pm)
I later had the shutter valve recall, so that probably fixed the problem for good.
That's what they replaced on mine prior to issuing the recall. I'm thinking about the Mazda CAI. I'm too busy/lazy to pull out a 3rd party aftermarket part before a dealership service appointment. I was thinking about the cat back exhaust too, but I've heard the stock exhaust is actually pretty good.
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- #4243 of 4532
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Re: Speed3 Fuel Injector noise [networkguy]
by roadburner
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Mar 02, 2008 (8:28 pm)
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Replying to: networkguy (Mar 02, 2008 8:21 pm)
I'm too busy/lazy to pull out a 3rd party aftermarket part before a dealership service appointment.
I'm going to check with my dealer and see if the Cobb will cause any warranty hassles. I like the Mazda CAI but for the fact that you have to pull the undertray and the wheelwell liner in order to access the filter for cleaning...
I was thinking about the cat back exhaust too, but I've heard the stock exhaust is actually pretty good.
Me too; based on what I've read on some of the Mazdaspeed forums the stock MS3 cat-back exhaust is more than adequate until you start cranking up the boost- which is something I don't plan to mess with.
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- #4244 of 4532
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Re: P0715 Input/Turbine Speed Sensor Circuit Malfunction, any ideas? [mazda
by mazdazoom
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Mar 04, 2008 (8:30 pm)
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Replying to: mazdazoom (Feb 19, 2008 6:52 am)
I realize I am responding to my own post, but I thought someone might find this useful. In regards to the 0715 error message Mazda agreed with me that it was the "speed sensor" located near the bottom of the tranny near the firewall, or the pulse generator located at the top of the tranny right under the battery box. Well I replaced the speed sensor myself and I still had the problem. So I went out and picked up a pulse generator (another sensor similar to the speed sensor) and replaced it myself. BINGO, that was the culprit, and the tranny is shifting better than it ever has. So just an update, if you get the P0715 error, it is either the speed sensor or the pulse generator sensor, I just replaced both sensors for good measure, $160 total. Save yourself the $200 in labor and swap it out, took me about an hour with test driving.
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