Yep I load the TC to 1800-2000 on launch!

I will try from just above idle next time. 1100-1200 rpm's.

Another thought. Does everyone who has this problem run DR's or slicks? Or do some run regular street tires and get the same 1-2 miss

Ken

------------------
95 Z28, BBK 52 mm throttle body, ported MAF ends, K&N CAI, ASP Pulleys, 160 thermostat, PCM by WWW.PCMFORLESS, LT4 KM, Heads by WWW.flow-technics.com, 2.055 int/1.57 exh. valves, 1.6 RR's, CC XE 230/236 544/556 112 LSA, Comp "R" lifters, Comp Magnum pushrods, FMS 24# SVO injectors, Meziere WP, Jet Hot coated Hooker LT's, Flowmaster cat back exh., PI Vig 2800-3000 TC, Strange 3.73 gears. Dyno numbers to come soon.

60' 1.690
1/8 7.674
MPH trap broke
1/4 12.059
MPH 113.00

My car www.teamnwfbody.org/members/mcdonald.htm

VID: CCXE230/236 thru Hooker LT's

 

Yes most of the people who have REALY had this problem and looked into it agree it is a TC Slip table Vs VSS and not a VSS issue

Ken I will mod you file and next time you are up we will load it

------------------
Ellis
Team Captain
Team North West F-Body
www.teamnwfbody.org

 

that all makes sense, but what is the difference in the programming in obd2 pcms that cure this? is it in the tranny tables that control the pressure regulator
?

 

Very good question and hopefully someone will figure out the answer. If you do, please don't keep it a secret.
I'm going to visit my buddy Ed Wright October 2nd and 3rd and I'll be absorbing some tid bits of wisdom. I'll see what he has been up to on this deal.

Karl Ellwein, 95 impala SS

 

Who here that didnt have the problem ran some kind of shift kit, and if so what kit?

 

Transgo makes an add on to there kit that makes 4l60e's full manual valve body with the flip of a switch and then back to fully automatic when flipping it back. I put it in my trans and love it. I was having the skip shift problem and now when I want ot change shift points I don't have to get the laptop out just do it manually. On nitrous I like to short shift it a little too so I don't have to worry about anything just my shifting abilties which are pretty good I must say.

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1995 T/A RamAir,17x9 WS6 polished rims,A4 Transgo 3:42's,LT4 Hotcam kit, mildly ported heads and intake, built 355 with forged pistons, LT4KM,NX N20 kit 125-175hp, Custom programming, AS&M headers, Vigilante 2800,
flowmaster catback, Fernco intake bellow,CSI w/p,MSD 6al, cutout. Everyday driver. New Et 12.50@107 N/A
11.61@117mph on N20. 1st decent N20 pass more to come!

 

This subject seems to be coming up quite frequently lately, hopefully this tread will be of some help.

 

We have some people on it now. We will see how it comes out

 

I posted here too since I believe that this is realted to several other posts.
I thought I had my tranny fixed but nogo!!!!!!
The tranny works fine as long as I dont load up the Torque convertor. Just leave the light and hammer it I get good shifts. I went to the track today to try my new trans. I loaded up the torque convertor nailled it on the bottom yellow, shift light came on at 6100 made shift bam no 1-2 shift let off and tranny goes into 3rd gear limp mode. tried lowering mph some more and shift rpm to 5500 and still no 1-2 shift. Bummer!!!!!!!!!!!!!!!!

Has anyone found a fix or isolated the problem. Is it related to the VSS and convertor slippage? Has anyone been able to compare the tables between to obd1 and 2 files.
and what is entailed in swapping a 95 to obd2 since this seems to be the only fix

 

2 choices. Either switch over to obd2 or do as I did, convert over to a 700R4. My converter doesn't lock up when it should so I've lost a mph or 2 but I no longer have the shifting problem. Once I get a manual lockup switch, everything should be fine.

 

Ed Write now has the fix. he found the table. It is set from the factory at 2,400 stall. Any stall over that with less then XXMPH showing sets it in limp mode.

I am switching back to OBD-I to verify and get my WOT Lock-up back!!

www.fastchip.com

Tell Ed, Ellis Sent you!

 

Please post the results of this. I would love to run a 3600 stalled converter on my 94 obd1 z-28.

 

I will let you know how it works with my 3,800+ Yank.

Looks like My next race is a month away. I will see if I can sneek off to a test and tune.

NO I can not share the file. You will have to call Ed.

 

Id figure you would say that but I understand. Let us know

 

I run a yank 3500 And have yet to have this problem with my 1/2 shift, mabye it has something to do with the type-f Tranny fluid yank told me to use?? I havent tried slicks yet...