pearlrx8mod

Just a couple of says ago, I realized when I'm going into the higher rpm ranges, it's hesitating and when I'm in 2nd going into 3rd at about 6k, it doesn't want to go that high and the same thing for 3rd going into 4th. It wont let me go passed 6k in 3rd, it hesitates.

What does this usually mean? Fml.

RIWWP

iTrader: (2)

E-shaft sensor, ignition, or MAF most likely. Could also be the SSV.

wcs

iTrader: (2)

+1
I would also add the Catalytic

pearlrx8mod

I don't have an exhaust coming out the back of the car. I have s straight pipe coming from the cat but I'm taking that off soon, could that be it?

I was also told the O2 censor should be changed since I don't have an exhaust...

RIWWP

iTrader: (2)

less restriction will never mean less power. But from your description, this isn't "power loss" but an interruption in fuel or spark. Either it's the e-shaft sensor fouled and the ECU can't tell where the engine is at that point and so doesn't deliver the fuel and/or spark, or it's skewed slightly and delivers them at the wrong point. Or the ignition is failing and can't keep up with the demanded 200 sparks per second (@ 6,000rpm). Or the MAF sensor is loosing it's accuracy and the ECU is adding the wrong amount of fuel.


If this is just simple power loss then the diagnosis changes, but that's not what you described.

pearlrx8mod

So, what do you think I should check out first?

RIWWP

iTrader: (2)

^

Pick one. If that doesn't solve the issue, pick another. Repeat. Nearly every issue we have with our cars shares symptoms with multiple issues. Highly detailed and specific descriptions of exactly what happens when, and (also important) when it doesn't happen, we can usually pinpoint the issue. You have not provided this level of detail, so we can only give you the range of issues that it could be.

tangoshark

Hi, I just had a problem came up so I hope someone can give me a pointer..

Just today I realized my 04 rx8 hesitates at around 7500rpm in 3rd gear only. I redlined in 2nd and it went to redline fine like usual but when I redline it in 3rd it jerks a couple time from 7000 to 8000 then I stopped and shifted up. Today is near freezing temp out for the first time this year so I don't know if that is a factor. Also, my car has 40K miles on it now and I think the spark plugs are still original so I may get that changed first. Any advice is appreciated.

Thanks!!

paimon.soror

iTrader: (15)

I had a long documented issue with high RPM fluttering (bogging, rumbling noise) that would rob me of power when i would really hammer the gas. Surprisingly wouldn't do it if I gradually went up the rpm band.

Turns out that i installed spark plugs like a sissy and didn't even start compressing the crush washer. Not sure if it will turn out to be your issue, but surely take a look. Lots of people who end up having an issue related to how tight they put in their plugs.


P.S. Just saw you say that you are on original plugs .... sounds like you just found the problem

jaymzs66

Had this happen to me 3 times, each for a different reason....

1st time, I had the BHR ignition, never had the chance to send it in and check why, but going back to stock fixed it. The symptoms where it would literally get stuck at about the range you're talking about, when I say stuck, I mean, not budge at all past a certain point. Also my idle was rough as hell.

2nd time, fuel injectors had an issue, this is probably not your issue since this was more like getting stuck at 20mph regardless of gear.

3rd time, this i got a cel for, p0661, which i need to fix, apparently is the ssv solenoid. What happens here is it still works, just at around the "3rd" phase of the engine, it seems noticably slower though still works.

GreggorZ

i had 2 codes that popped up when i lost power too, so get your codes checked

I had p2259 which is the air solenoid. the other one i forgot what it was.
took car to advance for free codes, then went to Mazda for a check up for 100$ smfh.
ended up i had a bad fuel pump. changed that and HI 9k rpm all day, but still need to change the air solenoid.

Hope this kinda helped.

Rrotaryredliner10k

I see this is becoming a constant issue with the 8. I recently had this problem and after replacing the coils, spark plugs, wires, and fuel pump I was still having the same issue. Like a dumb dumb. I didnt do a scan check for the CEL. I came up with the code P-0661 bank 1. which means that the solenoid that controls the SSV (Secondary Shutter Valve) is putting out no signal and the ssv remains shut. It is supposed to open up at low rpm and then closes at high rpm when the VDI (VARIABLE DYNAMIC EFFECT INTAKE-AIR) opens up. You need to replace the solenoid. $134 a peice at the dealership. One way you can trouble shoot this is by taking the vacuum hose from the air pump valve and place it on the SSV. Have a buddy rev up the 8 and check both the VDI and SSV valve location right under the extended intake (the black coated part) and see if the valves move. If it does, then it further confirms that your ssv or vdi solenoid is bad and needs to be replaced. To replace the solenoid or solenoids, you will need to remove the plastic intake which its attatched to. If youre a noob at this, please have a person that has knowledge about the fix help you if you intend to DIY. Took me about 2 hours to replace the solenoid for the ssv and she is back runnin the streets like a boss.

04Green

iTrader: (1)

FYI,

There is a clean the SSV video out there that will walk you through getting it out without pulling the upper intake manifold. You can easily see the solenoid before you get to the pull the SSV part. I would pull and clean the SSV anyway while I was in there... Mine was NASTY...

Williard

iTrader: (18)

https://www.rx8club.com/series-i-do-...-video-184663/

This should help.

wcs

iTrader: (2)

Ahem....
SSV stays opens and closes when the VDI Opens?
Extend intake?
If you take a hose from the Air Pump? The Secondary Air Pump?

nycgps

iTrader: (1)

Ssv closes at high rpm

...

*facepalm*

Ibrahim_se3p

So recently i’ve been seeing that my car (03’ Mazda Rx8) Has been hesitating to redline, First i thought it was a fuel pump and it actually was, the car used to go up to 7500rpm just fine but after that it starts sputtering like it doesn’t wanna go higher, Its really annoying now its my 7th fuel pump in 2 weeks, when i get a new fuel pump my car is fine for about a day and then this problem comes back, Need help guys

Loki

iTrader: (1)

If 7 fuel pumps didn't fix it, it's probably not the fuel pump.
What is the condition/age of ignition coils? Have you inspected the cat for clogging? Those can both cause what you're describing.