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2004 Rx8 shuts off while Driving

Old 01-22-2015, 07:50 AM
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@BigCajun yeah thought about it but figured I'm soon purchasing new body kit. Thanks for the input.
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Old 02-02-2015, 03:50 AM
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Originally Posted by korance View Post
Mine is not covered that is why i am looking for other solutions , in my country our dealer does not have support for RX8 at all and as i found no other countries near me in middle east either
any progress...in my region (East Africa) no support either and i have been having issues with my series I. You still have the car?
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Old 03-18-2015, 09:07 AM
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I'm having the same problem I just got the car last Friday it struggles to turn on and now yesterday it started stalking on me
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Old 04-08-2018, 02:38 PM
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Hi, guys, i just bought a 2007 Mazda RX8 - i changed the battery, Maf, plugs and coils.
Bought it without a catalytic converter.
Start fine, idle perfect. For the first 30 miles high power and runs smooth, but then it start hesitate and gets a power loss, the car will stil go but when i slow down the enjin just cuts out completely. I will turn the ignition off and on again it it starts perfectly. Is there anyone that can help me please.
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Old 04-08-2018, 02:41 PM
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Enjin cuts out on low rpm

Hi, guys, i just bought a 2007 Mazda RX8 - i changed the battery, Maf, plugs and coils.
Bought it without a catalytic converter.
Start fine, idle perfect. For the first 30 miles high power and runs smooth, but then it start hesitate and gets a power loss, the car will stil go but when i slow down the enjin just cuts out completely. I will turn the ignition off and on again it it starts perfectly. Is there anyone that can help me please.
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Old 04-08-2018, 03:17 PM
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Do you have any codes?

Get a Bluetooth OBD2 that can read live data and post a couple of pics of the data.
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Old 04-09-2018, 05:57 PM
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You could try resetting the ECU too
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Old 08-06-2018, 05:47 PM
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CA Palmdale, Idle and stalling issues

whats up everyone im new here. Well I was wondering if anyone can help me with my issue with my 2004 RX-8. It still idles and shuts down when I put it in gear. Ive changed the SAI pump, I cleaned out the SSV, I put in a new fuel pump along with a new Coolant Temp Sensor and after al I've done it still idle and then turns off when in gear. Does anyone have any thoughts on what I should check out next? Please help me out someone lol
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Old 08-06-2018, 05:58 PM
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Stop throwing parts. SAI pump has nothing to do with your issue. It's merely an emission device.

Automatic or manual? Sounds like an automatic, or you will have to learn how to drive a stick properly.

If it's an automatic then I'd think it's related to the transmission.
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Old 08-06-2018, 06:41 PM
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No its a manual. Ive only had the car since January.
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Old 08-06-2018, 06:55 PM
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Assuming it's not driver error, when does it stall? Does it stall when you are letting out the clutch in gear?
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Old 08-06-2018, 06:59 PM
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Yes exactly and one time I drove the car down the street to put gas and it started over heating as well.
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Old 08-06-2018, 07:07 PM
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So let me get this right, you are stopped with the clutch pressed own all the way, and you put the car in first, you release the clutch to the bite point and at the same time, you rev to about 1200~1500 RPM, and when you let out the clutch completely, the car dies. Is this correct?

Overheating is related to cooling system faults, obviously. Could be a lot of things, like a stuck closed thermostat, a busted fan, a leak somewhere, etc. Start by seeing if there is any leak/cracks in the cooling system.
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Old 08-06-2018, 07:20 PM
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yes when I rev to 5000 RPM and when I release the gas peddle thats when it shuts down on me. But when the car is on it has a low idle lower then 1000 RPM. I sounds like it struggles for air.

Last edited by Angel86; 08-06-2018 at 07:22 PM.
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Old 08-06-2018, 07:28 PM
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Normal idle, when warmed up, is about 810~840 RPM. Actually, I haven't driven a stock car with an idle higher than 900 RPM.

If you rev your car up and it dies, you should start by checking vacuum leaks.
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Old 08-06-2018, 07:49 PM
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No I could rev it high and it wouldn't die on me. Its when I release the gas peddle then it idles then turns off.
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Old 08-09-2018, 03:28 AM
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My car, after disconnecting the battery for whatever reason, forgets how to idle. Strange that it does this, but it does. At first it was frustrating and very worrisome, as the car would stall on me when coming to a stop at red lights. I read somewhere, maybe this forum, that I had to "reteach" the car to idle. So I disconnect the battery once again for a maybe 10 minutes so it'll forget all the stalling I've done; then I reconnect it. I start the car, using my foot on the throttle to keep it from stalling if needed. I slowly decrease my pressure on the throttle until the car stays idling on its own. I let it idle for another 5 minutes or so. Its slightly time consuming, but works for me...
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Old 08-10-2018, 11:12 AM
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Originally Posted by Angel86 View Post
yes when I rev to 5000 RPM and when I release the gas peddle thats when it shuts down on me. But when the car is on it has a low idle lower then 1000 RPM. I sounds like it struggles for air.
I'm still not sure I understand your problem. Forgive me if I explain stuff you already know, but without more information, I figure it's best to start with the basics.

To get very specific, try this:
  • Start car; idle should start out high, and gradually creep down as the engine warms up until it's around 800.
  • To move the car, put the clutch in, and rev up to about 3000.
  • Let the clutch out until it starts grabbing a little and begins moving the car. RPM will drop somewhat, say to 2000.
  • Let the clutch out more while giving it more gas to keep the RPMs up around 1800-2500.
  • Let the clutch fully out and start driving down the road.
Since the RX-8's engine is really light, it's really easy to stall. You will have to spin it up more than most cars to get it going, and it will take a bit more gas to keep it going as you let out the clutch. If you follow these steps and have trouble, specify exactly where things are going wrong. Is it when you spin up to 3K with the clutch in? That could be a vacuum leak. Is it idling? You might need plugs and coils. Is it when the clutch starts grabbing and you put a load on the engine? You may not be giving it enough gas, or your plugs and coils might be bad. If you put the gas pedal down to the floor and it still won't keep running, then you do have some serious problem. Otherwise, putting the pedal down a bit more is probably normal.

Give us more details or even a video, and we should be able to help diagnose the problem.
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Old 08-10-2018, 02:21 PM
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I think he knows how to drive the car.

Besides, I never got to 3000RPM when starting on flat ground. 1500RPM is sufficient, while 2000RPM is good enough if you want to take off quickly in daily driving. 3000RPM is used mostly on fairly steep hills where I would want to pull my handbrake.

Another thing is that it's easier if you hold the clutch at the engagement point for a little bit while giving gas until the car reaches a certain speed, rather than continuing to let it out. This comes from a lot of seasoned manual trans drivers teaching newbies.
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Old 01-07-2019, 09:11 AM
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NY

Originally Posted by yoda999 View Post
Hello,

I have an automatic 2004 with 45000 miles. I take good care of the car. It is garaged and I change the oil regularly. I was driving for 10 minutes and I just lost power and the car stalled. I was unable to re-start it. The local shop where I get oil changes is having trouble finding the problem. They say its not the ignition or fuel pump. 2 months ago I had a CEL on. It turned out that I needed a new CAT. The same shop replaced the CAT with 2 new oxygen sensors; all OEM parts. Since then the car has run well; until this stall. Any thoughts? In case this shop cant ID the problem, does anybody know a mechanic that has experience with this car in the northern New Jersey Bergen county area? I will bring it to the dealer if I have to.... But would rather not. Many thanks!
Speak to Ed at Olsen Engine he is in Nyack NY. 20 min from Paramus NJ. Tell him Joe sent you. He has a lot of experience with Rotary 1st 2nd and Rx8s. And that's anybody in this thread if they need help.
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