Still Bucking Around 1500 RPM.
11-09-2005, 08:12 PM
#21
Originally Posted by Silverhawk_02TA
I definitely found that IAC operations were a big part of my cam surge. Through tuning spark and VE and all that good stuff, I was able to keep the surge to under 1200 rpm. Once I nailed the IAC vs Effective Area and RAF tables, it now only starts to surge at 900 rpm, and then only in 1st or 2nd gear. I can cruise all day in 6th at 800 rpm with no surging. I have the same cam you do, so you should be able to get similar results.
Definitely make sure your idle stuff is dead on, and also the idle proportional fueling like WS6FirebirdTA00 mentioned.
Definitely make sure your idle stuff is dead on, and also the idle proportional fueling like WS6FirebirdTA00 mentioned.
11-09-2005, 08:54 PM
#23
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Originally Posted by WS6FirebirdTA00
also, my iac motor stays constant when bucking occurs. it doesnt move around.
i just think my car doesnt like me sometimes haha
11-11-2005, 06:44 AM
#31
Originally Posted by SmokingWS6
Does anybody have wideband readings while the bucking is occuring?
Experiment with timing. I have been able to subdue it by adding a lot of timing in the affected region, along with carefull ve work.
Experiment with timing. I have been able to subdue it by adding a lot of timing in the affected region, along with carefull ve work.
Bill
11-11-2005, 10:41 AM
#36
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I eliminated almost all of my bucking in my 98 w/ a hotcam. If I'd had an auto you would have never felt anything. I am pretty sure the main problem was related to reversion and too much overlap. But with a good combination of ignition timine, VE table changes, MAF table changes, and base running airflow changes, it idled and ran almost completely like stock, with only an occasional bit of bucking, and no "cruise" action.
11-11-2005, 02:22 PM
#37
When u guys say bucking,My car under cold start in revrse feels like a slight miis,bucking,chugging but as soon as I pull away it goes away until I come to a stop again under say 1500 rpm...If I pull to a light slowly Ifeel it once warmed up..If I come to a stop and hold my foot on the brake its non exsistant but if I take my foot off the brake and slowly pull away from the light I feel the bucking until about 1400 and thenit s gone again...
Is this what your describing cause its driving me crazy....
No codes of anykind,just this weird amonolie...
Is this what your describing cause its driving me crazy....
No codes of anykind,just this weird amonolie...
11-11-2005, 03:32 PM
#38
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Originally Posted by JS
When u guys say bucking,My car under cold start in revrse feels like a slight miis,bucking,chugging but as soon as I pull away it goes away until I come to a stop again under say 1500 rpm...If I pull to a light slowly Ifeel it once warmed up..If I come to a stop and hold my foot on the brake its non exsistant but if I take my foot off the brake and slowly pull away from the light I feel the bucking until about 1400 and thenit s gone again...
Is this what your describing cause its driving me crazy....
No codes of anykind,just this weird amonolie...
Is this what your describing cause its driving me crazy....
No codes of anykind,just this weird amonolie...
11-11-2005, 03:33 PM
#39
Originally Posted by Another_User
Yes. That is the amonolie we were referring to.
Mine dosnt happen while im accelerating from a stop, no matter how slowly. But if I decelerate into it, or try and keep it at a constant speed, it gets pretty violent. FWIW.
11-11-2005, 05:34 PM
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Originally Posted by GuitsBoy
Mine dosnt happen while im accelerating from a stop, no matter how slowly. But if I decelerate into it, or try and keep it at a constant speed, it gets pretty violent. FWIW.