Major hesitation in low rpm
 

I have a 2004 RX8 with about 50k miles. I've noticed recently that she is a bit hesitant until I hit 4K rpm, at which that point the powerband kicks in. I had her at the dealer today to check it out and they ran tests but came up with nothing. I have heard several possiblities from people but wanted to hear it from the gurus. Your thoughts and or suggestions are welcome.

Thanks,

what possibilities where you told

Dont just "oh my car has a problem its hesitating until 4K any ideas what might be the cause ?"

give us the maintenance history of ur car or something.

leading coils ftw

Replace your coils. More than likely, thats your problem. And even if it isn't, they should be replaced anyway.

yawn.

beers :beer:

Well I've had the car since about 10k miles. No mods. I have done all recommended maintanance by Mazda. I drive it about 3-4 times a week in moderate traffic in northeast florida. Typically I hit between 5k and 8k at every shift.

Don't let it get below 4k :D

check coils.

use heavier oil, in ur areas use at least 10w30

Coils yes. Also being the 2nd owner, have you ever had your plugs changed?

coils....but i am also located in FL and notice with even 89 octane gas it does not run right until abot 3k what octane ru running?

10w30 it is!

Yes the plugs were changed at about 30k miles but am not sure about the coils.

I am running 93 octane 100% of the time.

Btw thanks for all of the fast replies.

159 ft lbs torque. Normal.

^^+1

Hey guys. I just wanted to let you know that it was in fact the ignition coils...duh!

Thanks for the advice.

way to search!!!! ^^^^

I say we stick a headline on the top of the forums "FOR ALL LACK OF POWER PROBLEMS, LOOK AT YOUR COILS BEFORE ANYTHING"

^yes and i still think that all noobs should have like a probation period before they can post like register then a few dozen log ins to search and read then have to take a basic test on some normal ?'s asked by about every noob then they can post we would get rid of alot of these repeat ?'s

lol, nah, its kinda fun the flame the noobs every time they ask a 'tard' question :lol:

^yeah that is true then they get all pissed off and are like "what is your problem I just want an answer and you guys dis everyone" etc haha

well guys i had no lack of power untill the dealer did the last recall and whohoo!big bad engine problem that caused the engine to hit the dirt and needed to be replaced now i keep getting the 2004 code for a apv motor problem.anyone knowing anything about this please let me know i can't seem to get anywhere with the dealer.2004 6speed G.T.just ms exhaust and k&n drop in .

8 year/100K warranty? Are you over 100,000 miles?

I just wanted to leave a quick reply here since this thread helped me out. I had a similar problem. The car wouldnt start for at least 5-6 seconds of constant cranking every time and i had lost major power specially in lower rpm(anything under5000). It also started to rev really rough when i started the cold after sitting in cold weather (-10, -15). It would start but the needle would play around until it was warmed up which led to the car flooding once. Too cold of a night(-17 with windchill), started her up, went inside and waited for it to warm up. When i came back, the car had turned off and flooded(she turned off because my plugs and ocild were bad so weak spark and extremely cold engine didnt mix). Anyway, back to the main post. I changed my coils, plugs and wires which i bought as a package on ebay for $340. The car now starts like day one. She has also gained her power back and its very very noticeable so if you have similar symptoms(not the flooding), this could be your solution. on a dise note, the package that i bought from ebay is great except for the wires. The wires were too short for some reason and had to order from dealer for $80 butthe coils and plugs are great (so far- 500km)

Need help on troubleshooting. My car upon taking off it hesitates then it runs fine. On take off the more I push the accelerator the more it hessitates. Upon take it off and keep it light it runs normal.

Have you seen this sticky?

https://www.rx8club.com/new-member-f...causes-249529/