Surging at high rpm
08-11-2007, 04:00 PM
#1
Rotary Crawfish
Thread Starter
Surging at high rpm
I don't know if this has been addressed before, did a search and found nothing good.
I have all the latest flashes and the recall 4206F done.
When on the gas in 3rd or 4th gear on a long accel the car stumbles/misses/surges twice at about 5-6 grand and at 7-8 grand then pulls clean to redline.
Is this just the aux ports opening and giving a small "hit" at high RPM's??
There are no other problems, no CEL's, just curious.
I have all the latest flashes and the recall 4206F done.
When on the gas in 3rd or 4th gear on a long accel the car stumbles/misses/surges twice at about 5-6 grand and at 7-8 grand then pulls clean to redline.
Is this just the aux ports opening and giving a small "hit" at high RPM's??
There are no other problems, no CEL's, just curious.
08-11-2007, 04:16 PM
#2
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Please give us more info on your car, year&mod, miles, tranny, gas reg-prem...anything that might help us. There is a small change you can feel but not a Stumble.
08-13-2007, 10:19 PM
#5
Rotary Crawfish
Thread Starter
Ok sorry, 05, 6mt,12000 miles, prem gas, and 2-3 redlines every time I drive.
Took her out yesterday for church and noticed what was happening. It feels like the kick of an oldschool 4bbl carb snapping open.
I called it a stumble, it is hard to discribe, just a little funny blip in the powerband always at the same RPM points.
I didn't think the port switching was noticable.
And for those who don't know, I have owned 4 other rotaries, all RX7's and they never were babied. Whats the point of 9000 rpm on the tach if it is never used.
Took her out yesterday for church and noticed what was happening. It feels like the kick of an oldschool 4bbl carb snapping open.
I called it a stumble, it is hard to discribe, just a little funny blip in the powerband always at the same RPM points.
I didn't think the port switching was noticable.
And for those who don't know, I have owned 4 other rotaries, all RX7's and they never were babied. Whats the point of 9000 rpm on the tach if it is never used.
08-14-2007, 12:00 AM
#7
Ok sorry, 05, 6mt,12000 miles, prem gas, and 2-3 redlines every time I drive.
Took her out yesterday for church and noticed what was happening. It feels like the kick of an oldschool 4bbl carb snapping open.
I called it a stumble, it is hard to discribe, just a little funny blip in the powerband always at the same RPM points.
I didn't think the port switching was noticable.
And for those who don't know, I have owned 4 other rotaries, all RX7's and they never were babied. Whats the point of 9000 rpm on the tach if it is never used.
Took her out yesterday for church and noticed what was happening. It feels like the kick of an oldschool 4bbl carb snapping open.
I called it a stumble, it is hard to discribe, just a little funny blip in the powerband always at the same RPM points.
I didn't think the port switching was noticable.
And for those who don't know, I have owned 4 other rotaries, all RX7's and they never were babied. Whats the point of 9000 rpm on the tach if it is never used.
08-14-2007, 01:43 PM
#8
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Ok sorry, 05, 6mt,12000 miles, prem gas, and 2-3 redlines every time I drive.
Took her out yesterday for church and noticed what was happening. It feels like the kick of an oldschool 4bbl carb snapping open.
I called it a stumble, it is hard to discribe, just a little funny blip in the powerband always at the same RPM points.
I didn't think the port switching was noticable.
And for those who don't know, I have owned 4 other rotaries, all RX7's and they never were babied. Whats the point of 9000 rpm on the tach if it is never used.
Took her out yesterday for church and noticed what was happening. It feels like the kick of an oldschool 4bbl carb snapping open.
I called it a stumble, it is hard to discribe, just a little funny blip in the powerband always at the same RPM points.
I didn't think the port switching was noticable.
And for those who don't know, I have owned 4 other rotaries, all RX7's and they never were babied. Whats the point of 9000 rpm on the tach if it is never used.
I only notice it around 4.5 to 5.5krpm dough...It is like a sudden hesitation in acceleration....
Then, on occation I notice it as I cross the 7krpm mark....
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