RPM surging... need some help

I had the same issue. Torque converter lock up schedule was acting up (pcm tune).
 
it sure sounds like a lock-up issue, because it kind of reacts like im pressing the OD button while driving. i will give the reflash a shot, hopefully that would be it...lol thank you!
 
yeah, something tells me that the brake check valve is not the problem. i appreciate the insight, but hey, if all else fails i will give that a shot when i install my newly acquired big brake kit! :)
 
i had that problem with my 73 elcamino and 84 z28 car worked fine when you are on the gas as soon as you let off the gas and give it a little it would slip rpm's would jump then go back to were it was not slipping both cars it was trans related i replaced the trans and tc that took care of it also if you have the oe 93 trans those were not the best ones. did you fill the tc when you installed it if not that will burn it up on start up also on a rare insight i have had motors that were toast no compression causing the motor to fly high in rpm's but not pulling the car down the road as it should
 
the stall converter install was professionally done. and i was watching the whole time, so it was done right! :)
 
JoeyLincolnMK8 said:
yeah, something tells me that the brake check valve is not the problem. i appreciate the insight, but hey, if all else fails i will give that a shot when i install my newly acquired big brake kit! :)
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Hey, it's your bankroll. Me, I was glad it was only a 4 dollar part. Leaves me more money for other things.
 
fossten said:
Hey, it's your bankroll. Me, I was glad it was only a 4 dollar part. Leaves me more money for other things.
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oh, i totally understand where you are coming from. and like i said before, I appreciate everyone's help. plus, I am a firm believer in doing the simple things first. but my issue may or may not be the same as yours. I will post back once I figure out what the problem is. :D
 
I went ahead and checked for any vacuum leaks or any leaks for that matter and none were found. So, my dyno tune is this Thursday HOPEFULLY this will correct this retarded issue i have been dealing w/ for about 8-9 months. I will keep you all posted, please will me luck...lol Thanks guys!
 
UPDATE: Well yesterday I took a trip to sniper for my dyno-tune and they did not have anymore chips in stock. So I have rescheduled the dyno-tune for next week. Cool people there, also I got alil dirt on Geno now. hahahahaa ;)
 
hey man i had this exact same problem in my t-bird. does it ever try to drive itself?

what happened to me was i had a clamp on my intake that wasn't that tight. so air that wasn't metered could get by the maf. try tightening everything you see on the intake tube.
 
I am not too sure what you mean by driving itself. When I am giving the car gas and holding it and the RPM's are at a constant level. After awhile the RPM's will jump to 500 or so and then the car will start to increase speed. Like I said, it really does not matter how fast or slow I am going. I think it might be a lock up issue, because when I smash on the gas, the tranny shifts into every gear perfectly.
 
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