Last post on Oct 18, 2006 at 9:17 AM
You are in the Mazda RX-8
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Mazda RX-8, Coupe
#942 of 1414 Re: Performance probs continue [redrpm]
Jul 17, 2005 (3:49 pm)
My 2004 RX8 experienced the same problems. I live in the hot southwest-Albuquerque. At first they thought it was the computer so they reprogrammed it. When it continued to do it, I was told that Mazda has been replacing engines as a result of it. However, they haven't said they have fixed the problem. My dealersihp has already replaced 2 engines. My engine is on back order. I've been without my car for 2 1/2 weeks this time. We've written Mazda as this is a safety problem. I would have to have it die on my in a busy spot. I've had it happen at minor intersections so far. They say it is carbon build up. I've had mine for 15 months and it has less than 7000 miles on it. What good is a new engine if I'm going to experience the same problem next year. Maybe they are hoping it will be out of warranty and not their problem.
#943 of 1414 A recall is coming for all RX-8s, any year
Jul 17, 2005 (5:37 pm)
Last week MazdaUSA told dealers to stop selling RX-8s until they got service updates for them. Now the first part of the update is out. Cars built after the plant fire (from March xx,2005 and newer) already have extra heat shielding around the gas tank and O2 sensor, but have to be recalled and checked. If all is well, they flash you to the latest computer software and send you on your way. If all is not well, they may have to replace the gas tank, sensor, fuel level sensor, and more parts.
If you have an older car, you will be getting new shielding and any other parts it takes to fix it, then the same computer flash.
Don't both to call your dealer, since they do not have the parts (yet) to fix any of the cars that need more than just a flash. We should all get recall notices in the mail next month and at that time the dealers should have what it takes to fix the cars.
The key to avoiding the under car heat problem is not to sit still and fast idle the car. So if you are stuck in traffic and want the A/C to run colder, if you race the motor up to 2k, 3k, or more you could cause over heat damage to your car. For sure if you live in a hotter area you have to be more careful. Sitting at NORMAL idle is supposed to be OK.
#944 of 1414 Hibernation Part 2
Jul 19, 2005 (4:54 am)
Okay, the official word from my dealership is this: everything pathstar1 described sounds fine to them, though they highly recommend the jack stands (or bricks) as they believe the WHEELS will deform if the car sits in the same position for that long. Nothing about flatspotting tires or sagging springs (though I didn't ask). Perhaps the alloy used in the 8's wheels is a little weaker than the RX-7 pathstar? I dunno.
They of course recommended having someone drive the car at least once a week (which I can do) for about 20kms or so. I think I will likely go with this option, as I think there is less risk to the car overall. Pathstar, anyone else, do you guys disagree?
Thank you so much for all your help so far!
#945 of 1414 Re: Hibernation Part 2 [slayer]
Jul 19, 2005 (6:29 am)
I think there was a miscommunication there. The wheels wouldn't deform, the tires do. They are part of the wheels, so overall, the wheels deform, but not the rims. The aluminum rims can take huge forces, and the force of holding up the car is minor.
I think there would be a much greater chance of problems if someone drove the car once a week than if it just sat. Much greater wear, chance of accidents. If it sits you only have time deterioration, which you would have even if driven. If you don't have a garage, invest in a car cover to keep the sun out of the car. Those looking after it can keep an eye on the cover, rinse it off if necessary from time to time, and if it starts to come off, reattach it. Oh, and once a month they should look under the cover to make sure someone/thing hasn't gotten into the car. You wouldn't want to come home to find a dead body or anything in your car.
As I said, I store my RX-7 6 months every year, and it is just as "new" when I start it up in the spring as it was in the fall when I hibernated it. I just have to install the battery,brush off the dust, check the tire pressure, and clean the windows inside and out.
If you do want to put it up on jackstands, you will need four of them. You will also need a concrete pad or concrete patches to put the jackstands on. You will also need a jack to raise the car so you can put the jackstands under it. If you are set up for this, by all means do it. If you are not set up for it I wouldn't do it. If it's not going to be in a garage I wouldn't put it up on jackstands. Too much temptation for wheel thieves, and too dangerous, as it can be knocked off the stands if someone bumps it hard - even children could knock it off the stands if they "tried" hard enough.
So, outside, car cover, no jack stands, remove battery, use "battery tender" to keep it charged.
Inside, car cover optional, jack stands, remove battery, use "battery tender" to keep it charged.
#946 of 1414 to pathstar :)
Jul 19, 2005 (1:12 pm)
my friend(allow me to call you this way ),i have 2 questions:
1. Because i'm too scared of what i hear everyday(replacement of engines etc).....i will tell you the way i drive my 8 and tell me if it's good: i drive it everyday with an average 30 km per day.I rev it 3-4 times a day to 9000rpm(usually the 1st and 2nd gear).If it has traffic in the road i prefer using 2nd gear at 40km/h than 3rd.i rarely use the 4rth gear in the city.I change my oil every 3000 km(texaco havoline 5-30 semi synth).I use 100 octane fuel and sometimes 98(i think it's RON you call it there).
2.About the new recall....if we don't change the fuel tank(extra heat shielding)...would that be a great problem?
Thank's a lot.
#947 of 1414 Re: to pathstar :) [rx8world]
Jul 19, 2005 (2:06 pm)
Sounds like you're doing fine. Don't be scared! It's a very reliable engine, unless "lugged". Doesn't sound like you're lugging it! The second gen. RX-7 (the last "normally aspirated" rotary cars made) are now turning well over 200,000 mi. in the US.
I don't think you need to use such high octane rated fuel, just go with what the owners manual calls for. If you have "mid grade" it works fine. Many even use "regular" (87 rating). You may get better mileage with lower octane fuel. I wouldn't worry about knock - this car has a fantastically effective protection system so go ahead and try lower octane and see what you think. If it "pings" you will notice it suddenly looses power for a few seconds, then recovers - usually this happens at full throttle in the lower RPM range. If you notice pinging you can always change back to higher rated fuel. I haven't heard of anyone damaging the engine this way. If you're putting in a supercharger or turbocharger, well, that's a different matter!
As far as the recall, I'd go with Mazda's recommendation. I think the problems occurred in hot climates, but you could get caught in heat, so go with the recall would be my choice.
#948 of 1414 recall and high rpm's
Jul 19, 2005 (4:24 pm)
I have a question and a story I would really appreciate some feedback on:
Does hitting the rev limiter trigger the CEL?
Here's what happened, on two occasions my CEL came on and the only common demoninator I can think of is that I took the engine upto 8000+ rpm at which point in bogged down slightly then recovered. Upon next start-up the CEL came on.
The first trip to dealer ended up with a new "flash" ( not sure which version).
This second time I told the dealer about possibly hitting the rev limiter and he said that was why the CEL came on.
He also advised against continually "over revving" the engine.
When I asked about resetting the CEL without a tip to him he said it will auto reset after 20 or so cycles (start, reach temp and cool down =1 cycle).
Next he tells me that there is a recall on my car (2004 6pd, 10K miles) and that if I take it off the lot I will be responsible for any physical harm to persons or property. Needless to say I left it ( I got a decent loaner from the dealer, a Hertz, free, unlimited milage for as long as he has my car). He doesnt know how long it will take to get the parts per previous messages on this board. I could go on but you get the idea, does any of this make sense?
#949 of 1414 Re: to pathstar :) [pathstar1]
Jul 20, 2005 (2:35 am)
About pinging noise,i've noticed that 1-2 times when i was in 4rth gear and about 40km/h but i'm not sure if that was what we call pinging noise from the low octane fuel....it was more likely like the engine said"go to lower gear please"
I forgot to mention something.When my mechanic wanted to check something in the exhaust system and he unplugged it,the pipe inside,all the way to the exhaust pipes ,it was as clean as a white paper .I asked him"is that my exhaust?" "yes,it's very clean because the combustion is excellent and it burns all the fuel" he responded .
And,a good information to check(to all rx8 owners) :GReddy RX8 Turbo Kit.......gives 30% more hp 40% torque ,all these without opening the engine
#950 of 1414 Re: recall and high rpm's [ukjim]
Jul 20, 2005 (8:29 am)
It's possible to trip the CEL by reving it high. At high revs. the engine exceeds emissions and trips the light. Is your car a manual "high power" unit? If so, 8000 RPM is not "over reving" it. If it's the low power engine, with the 7500 RPM "redline", then you did exceed the "recommended" revs. You will not damage it until about 11,000 RPM! As I recall the CEL will reset after 6 cycles, or you can speed it along by disconnecting the battery -ve terminal. If you do this you will have to reset the electric power steering as per the owners manual - with engine running turn wheel all the way right, then left, then centre.
The recall is related to "melting" the plastic fuel tank by letting it sit and idle for long periods on hot days. The wording your dealer used was created by the USA "sue" society! It would have been just as safe to drive as it was a week before, when they didn't warn you, but now they know there is a slight possibility of a fire!
#951 of 1414 Re: recall and high rpm's [pathstar1]
Jul 20, 2005 (5:05 pm)
I do have the manual tranny and from all I've read here, keeping the revs up is recommended. I really hadn't wanted to leave the car, I had only dropped in to the dealer on the way home to see if they could reset the CEL, but now the question is what is tripping it if not the revs? I know I hadn't exceeded 9K rpm. As for the recall, my main concern is how long its gong to take to get the fix. The free rental Taurus SE is OK ( it has great A/C for these hot and humid days) but I want my red beast back!
The other piece of info from the dealer is I have to leave the A/C on recirc at all times to get best cooling. I know this is BS but are you aware of any recalls on the AC, it does seem very weak and I'm heading back to CA where I will see hotter temps throughout the year vs only for a few months here in RI.