Engine Rattle When Revving over 5k
04-13-2006, 08:51 PM
#51
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Good info Photo, I wish I wasn't so mechanically-challenged, or else I would at least give you some input about your reasoning. This is why I'd like guys like rotarygod and other rotary experts here to shed some light on this problem, instead of just saying my engine is going to blow up.
I don't get the CEL btw, I've done all my flashes...no power loss, nothing, just the rattle. The paper crackling is consistent....if I hold it at 7500 rpm, the noise won't stop.
I don't get the CEL btw, I've done all my flashes...no power loss, nothing, just the rattle. The paper crackling is consistent....if I hold it at 7500 rpm, the noise won't stop.
04-14-2006, 09:05 AM
#52
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04-23-2006, 06:29 PM
#58
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my reply from that octane thread
its not engine knock then. if you cruised at 7500 rpm and got constant engine knock you would foul the plugs so you would start getting misfire CELs. Plus you'd get emissions CELs as the fuel wouldnt be getting burned so the O2 sensors would catch that over rich situation. All of this would cool the chambers and stop the knock.
05-13-2006, 01:23 PM
#59
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Just a heads up for anyone experiencing this problem. After almost 4 weeks at the dealership they FINALLY found the problem. The 2006 RX-8 has a new pressure relief valve for the heater core. Apparently the old valve was causing some kind of air bubbles in the heater core. Mazda found out that these air bubbles caused a rattling sound at high rpm's.
After they replaced my valve with the new one off the 2006 model the rattling sound was gone. I can no longer make my car do that rattle sound even if I try. I also noticed that the new 2006 RX-8's on the lot are now rated at 232 HP instead of 238. I wonder if the new valve is part of this loss of HP?
Hope this helps, I heard that Mazda will be issuing a Service Bulletin for this problem.
Good Luck!
After they replaced my valve with the new one off the 2006 model the rattling sound was gone. I can no longer make my car do that rattle sound even if I try. I also noticed that the new 2006 RX-8's on the lot are now rated at 232 HP instead of 238. I wonder if the new valve is part of this loss of HP?
Hope this helps, I heard that Mazda will be issuing a Service Bulletin for this problem.
Good Luck!
05-13-2006, 01:56 PM
#60
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Originally Posted by Rudboy
I also noticed that the new 2006 RX-8's on the lot are now rated at 232 HP instead of 238. I wonder if the new valve is part of this loss of HP?
The "loss of HP" is due to a new horsepower rating procedure instituted this year for all manufacturers. There was no "real" horsepower change in the high-power MT engine over last year. The AT car did get a boost in HP, however, which as I understand it was achieved by using a detuned, or rev limited perhaps, version of the high-power engine.
05-13-2006, 08:37 PM
#61
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My 2004 has been in the shop for the last four days. I live in Las Vegas and as soon as the heat hit 90, I started to hear the noise. My car also began to stall. I took it into the dealership and they said they had a factory tech working on the problem. A compression test to detect premature wear on the seals is scheduled Monday.
Unfortunately, in some cases, this issue has resulted in damage to the engine requiring replacement. For me, it is all under warranty (47K miles) and the tech assured me that it would only take a week to get a new engine.
I have heard some guys who were out of warranty having to pay the install but the dealership covered the new engine.
I am still waiting to hear the results of all the tests the dealership is performing.
On another note, this dealership has only received one '06 RX-8 at this time with no more on the horizon. Has anyone heard about this shrinkage in new RX-8s?
Unfortunately, in some cases, this issue has resulted in damage to the engine requiring replacement. For me, it is all under warranty (47K miles) and the tech assured me that it would only take a week to get a new engine.
I have heard some guys who were out of warranty having to pay the install but the dealership covered the new engine.
I am still waiting to hear the results of all the tests the dealership is performing.
On another note, this dealership has only received one '06 RX-8 at this time with no more on the horizon. Has anyone heard about this shrinkage in new RX-8s?
05-22-2006, 09:28 AM
#63
Originally Posted by ten2001
My 2004 has been in the shop for the last four days. I live in Las Vegas and as soon as the heat hit 90, I started to hear the noise. My car also began to stall. I took it into the dealership and they said they had a factory tech working on the problem. A compression test to detect premature wear on the seals is scheduled Monday.
Unfortunately, in some cases, this issue has resulted in damage to the engine requiring replacement. For me, it is all under warranty (47K miles) and the tech assured me that it would only take a week to get a new engine.
I have heard some guys who were out of warranty having to pay the install but the dealership covered the new engine.
Unfortunately, in some cases, this issue has resulted in damage to the engine requiring replacement. For me, it is all under warranty (47K miles) and the tech assured me that it would only take a week to get a new engine.
I have heard some guys who were out of warranty having to pay the install but the dealership covered the new engine.
05-24-2006, 03:24 PM
#64
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Originally Posted by MadOLaL
Ok I got an A/T so lets get over that fact. But I've been noticing when I'm in manual mode and punch it I hear a weird rattle coming from the engine when I'm over 5k RPM. Sometimes its there and sometimes its not. But it's usually always in 2nd gear. It almost sounds like something is shaking loose. I only have 7k miles on the car. Has anybody experienced this before? Thanks for your input.
05-24-2006, 09:13 PM
#65
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I have a MT with 40K miles and I've been telling the dealership for at least 9 months now about a "plastic bag hung under my car" sound. The kept telling me that they couldn't hear it. Well, yesterday the temp here hit the upper 90's and once again I hear the noise aaannnnddd a VERY bad idle comes out of nowhere and she dies. I figure it has something to do with the A/C compressor since the A/C was on during all this and it all stopped once I turned the A/C off. I take her back in to the dealership today, after noon when it's gotten hot outside. They FINALLY hear the noise and hook up some sort of gauges, put in a call to Irvin. Turns out it's supposedly the CPU.... I'm to drop her off next Tuesday for 4-5 days so the CPU can be pulled, shipped to Irvin, updated, shipped back to the dealership & then reinstalled in my car.
HOPEFULLY, this will fix my plastic bag noise and everything will be just peachy. *crosses fingers and says a prayer*
HOPEFULLY, this will fix my plastic bag noise and everything will be just peachy. *crosses fingers and says a prayer*
05-24-2006, 09:32 PM
#66
stop flooding ur engines
whats up with u guys havin pcms sent to cali for reflashes? my delaer does it over a labtop in the shop. ps for the first 4k miles mine would click like crazy above 7300 rpm, first thought it was the vdi but after reading all the pages of this crap im thinking its knock. time to find a gallon or two of race fuel. maybe itll clear it away and i didnt loose too much compression from all the knocking......time for a compressiomn test
05-24-2006, 11:25 PM
#67
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I have the same issue as the rest of you guys... rattling under load at 5000 rpms and higher.... power loss... and ive constantly taken it in to several dealers... they finally were able to reproduce the noise after about a dozen times to the dealership... They are sending my PCM to Cali too (i dont get that either) but im at 47k miles... if this doesnt fix it im going to keep taking it in until they replace the engine....lol
Raptor... have they offered this solution to you? If I didnt love this car so much I would have traded it in a long time ago. One thing for sure...its my last Mazda.
05-25-2006, 01:10 PM
#68
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everyone should step back from the computer- it seems pretty obvious that many of you are not experiencing the same noise. this is the problem with tryng to diagnose an issu eover the internet. one guy hears a noise which he calls rattling and then 10 otehr peole say they have a rattle too. but the first guy just had some air bubbles in his heater core or something where as the guy in vegas has a much more serious issue. a coupel people are probably only hearing the VDI or APV open while some are probly hearing a little ping from bad gas.
just because one person says "i heard a rattle in my car and now they are replacing my engine" it doesnt mean that everyone who hears a noise that could be described as a rattle needs a new engine.
just because one person says "i heard a rattle in my car and now they are replacing my engine" it doesnt mean that everyone who hears a noise that could be described as a rattle needs a new engine.
05-25-2006, 06:35 PM
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Originally Posted by zoom44
everyone should step back from the computer- it seems pretty obvious that many of you are not experiencing the same noise. this is the problem with tryng to diagnose an issu eover the internet. one guy hears a noise which he calls rattling and then 10 otehr peole say they have a rattle too. but the first guy just had some air bubbles in his heater core or something where as the guy in vegas has a much more serious issue. a coupel people are probably only hearing the VDI or APV open while some are probly hearing a little ping from bad gas.
just because one person says "i heard a rattle in my car and now they are replacing my engine" it doesnt mean that everyone who hears a noise that could be described as a rattle needs a new engine.
just because one person says "i heard a rattle in my car and now they are replacing my engine" it doesnt mean that everyone who hears a noise that could be described as a rattle needs a new engine.
Yes... You are right, as a Mazda customer, I SHOULDNT have to try to diagnose these problems. Its not my freakin job...BUT, I would think that if there is a problem my service department would try to do research and find the cause of the problem, rather than just let it sit at the dealership for days and print on the work sheet "Could not duplicate". This has happened on 4 different occaisons over the past 2 years.
I dont want a new engine... I want my car fixed... and I dont want to have to take it back EVERY week. Its NOT a little ping.. its a loud rattle with alot of power loss. I come to this forum to get information on what the problem could be.
Instead from you I get a "Step back"! This noise is not normal and as a matter of fact my DEALER told me that Mazda Technical Support said this was the procedure for this problem. And guess what, if its not the solution, it will go back to the dealership the next day.... again and again and again...
So if you are going to post something in this thread... How about posting some useful information, rather than just bashing us with this "little problem"... or take your own advice and just "Step back"
05-25-2006, 08:43 PM
#70
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Calm Down- thats all i meant by my step back post as well - Calm Down. Its not even directed at you. If you've have spent anytime on this forum you know that i strive to be one of the most helpful people here. I think most everyone in a couple or 3 threads with "rattle " issues just needs to calm down a little.
I feel like im seeing a sort of "Feeding Frenzy". There clearly are seperate issues being discussed here but everyone keeps posting "i have the same issue". but its just not the case. The feeding frenzy will just cause more confusion and make it harder for anyone to make sense of the various issues.
I didnt mean to imply that anyones concern was their fault. But a couple people are new owners and clearly could be hearing the intake operating the way it should- this has been coming up since the beginning and isnt a problem. your issue is obviously different since it involves more symptoms.
why has your car been to the dealer 12 times for an issue that has happened 4 times? Did you ever ride with a service person show to them the issue? Have they ever performed a compression test?
As for why the PCMs get sent to Cali- i have posted this info in other threads
I feel like im seeing a sort of "Feeding Frenzy". There clearly are seperate issues being discussed here but everyone keeps posting "i have the same issue". but its just not the case. The feeding frenzy will just cause more confusion and make it harder for anyone to make sense of the various issues.
I didnt mean to imply that anyones concern was their fault. But a couple people are new owners and clearly could be hearing the intake operating the way it should- this has been coming up since the beginning and isnt a problem. your issue is obviously different since it involves more symptoms.
why has your car been to the dealer 12 times for an issue that has happened 4 times? Did you ever ride with a service person show to them the issue? Have they ever performed a compression test?
As for why the PCMs get sent to Cali- i have posted this info in other threads
05-26-2006, 12:49 AM
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Zoomless in Vegas
Originally Posted by Raptor75
Sounds like the start of the engine failure season in the hot climates. Was your car a Auto or a MT?
My car is a manual with over 47K. I am still waiting on an engine. I've been driving a MPV for the last two weeks. A gal that used to work in my office just had her AT engine replaced at 17K.
The explanation that I got from my service tech was this is happening in three cities in the US. The first 46K miles on my car were in Seattle where I had no problems.
The service manager informed me that this was an ECU issue in which the computer did not allow for enough oil to be injected due to load, altitude and temp conditions. He said that the computer has be flashed with the update to fix the cause but the damage has been done. So they are replacing my engine with a reman. The good news is I get 12 months and 12K miles more in warrenty.
