Idle vibration, and engine reving
11-26-2011, 01:23 AM
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Idle vibration, and engine reving
Hey, I bought an 06 RX 8 a few weeks back, I haven't been able to use it because it only has (very good) summer tires. I've been playing music on it, and I start it every 20 minutes or so, wait 5 minutes, and rev it to 3k for a minute or so to charge the battery.
Tonight, I started it, first time in about 3 days. I'm on the last line of gas and I'm thinking this is why, but the engine kept reving from 1.5k to 4k and back down. It does this up and down every 30 seconds or so sometimes it doesn't go as high as 4k but it never goes higher than 4k. Right now its only -1C, I've had it started colder than this before without this problem.
Outside, the exhaust sounds like it completely stops for a split second and then starts again, I'm not sure if it is doing this to the revs though.
The whole car was really shaking too, you could feel it in the seat and the shifter was really wobbling more so than normal. It did eventually go back to normal after a few minutes though.
This is my first time with a manual and my first time with a rotary so I'm not really sure what I should expect from it in cold or low fuel conditions. My old car never had any of these problems but it was a 4 cylinder auto.
Tonight, I started it, first time in about 3 days. I'm on the last line of gas and I'm thinking this is why, but the engine kept reving from 1.5k to 4k and back down. It does this up and down every 30 seconds or so sometimes it doesn't go as high as 4k but it never goes higher than 4k. Right now its only -1C, I've had it started colder than this before without this problem.
Outside, the exhaust sounds like it completely stops for a split second and then starts again, I'm not sure if it is doing this to the revs though.
The whole car was really shaking too, you could feel it in the seat and the shifter was really wobbling more so than normal. It did eventually go back to normal after a few minutes though.
This is my first time with a manual and my first time with a rotary so I'm not really sure what I should expect from it in cold or low fuel conditions. My old car never had any of these problems but it was a 4 cylinder auto.
11-26-2011, 01:34 AM
#2
put down the keys, and step away from the car.
why are you starting it up? Why not just remove the battery and keep it on a tender?
Why let the fuel get low and insist on revving the engine, without load?
What have you done to educate yourself, regarding the RENESIS engine?
why are you starting it up? Why not just remove the battery and keep it on a tender?
Why let the fuel get low and insist on revving the engine, without load?
What have you done to educate yourself, regarding the RENESIS engine?
11-26-2011, 01:38 AM
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I've done quite a bit of research, I've heard of the reving in cold temps, but I haven't heard anything of this shaking or the exhaust cutting out. I used to be a security guard, we do a lot of sitting in our cars and I was told by them to start and rev the engine every 20 minutes or so for 30 seconds at 2 to 3k so the battery won't die when listening to music or charging things like your phone or laptop.
I'm going to be buying winter tires within a week or two for it.
I'm going to be buying winter tires within a week or two for it.
11-26-2011, 01:44 AM
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Just let it idle warm. It charges the battery just fine at idle.
The shaking could be anything from bad motor mounts (or stiff due to cold?) to ignition needs replacing to getting all carboned up from all the no-low reving you are doing to a vacuum leak throwing off the idle.
The rev hunting can happen when it's really cold. If it does it consistently then it's the neutral switch or neutral switch wiring. But if returns to normal then it's ECU triggered, though usually because the ECU is trying to figure it out, not "because it likes doing that."
Once you get winter tires on it and start driving, do an ECU reset to wipe whatever you've been teaching it by all the no-load reving.
The shaking could be anything from bad motor mounts (or stiff due to cold?) to ignition needs replacing to getting all carboned up from all the no-low reving you are doing to a vacuum leak throwing off the idle.
The rev hunting can happen when it's really cold. If it does it consistently then it's the neutral switch or neutral switch wiring. But if returns to normal then it's ECU triggered, though usually because the ECU is trying to figure it out, not "because it likes doing that."
Once you get winter tires on it and start driving, do an ECU reset to wipe whatever you've been teaching it by all the no-load reving.
11-26-2011, 01:48 AM
#5
so, you've been sitting in your parked car, playing music?
In your research, you should have noted that it's not good to let the gas run low. That's very true under harder driving conditions. At idle, there is less chance of harm, but why risk it?
You could be experiencing fuel starvation. Or, it could be a lot of other issues. Hard to say without more info.
clean your eccentric shaft and maf sensor; check for leaks in intake; etc.
In your research, you should have noted that it's not good to let the gas run low. That's very true under harder driving conditions. At idle, there is less chance of harm, but why risk it?
You could be experiencing fuel starvation. Or, it could be a lot of other issues. Hard to say without more info.
clean your eccentric shaft and maf sensor; check for leaks in intake; etc.
11-26-2011, 01:56 AM
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so, you've been sitting in your parked car, playing music?
In your research, you should have noted that it's not good to let the gas run low. That's very true under harder driving conditions. At idle, there is less chance of harm, but why risk it?
You could be experiencing fuel starvation. Or, it could be a lot of other issues. Hard to say without more info.
clean your eccentric shaft and maf sensor; check for leaks in intake; etc.
In your research, you should have noted that it's not good to let the gas run low. That's very true under harder driving conditions. At idle, there is less chance of harm, but why risk it?
You could be experiencing fuel starvation. Or, it could be a lot of other issues. Hard to say without more info.
clean your eccentric shaft and maf sensor; check for leaks in intake; etc.
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