Cascade Crew

steven23

Hi everybody! Yesterday before work I reset that detent cable thingy cause it was shifting a little soon (but smooth). Well now it seems the transmission doesnt wanna shift like it should. I'll have to speed up and let off and then I'll get a *pause* and it'll shift hard in to the next gear. Before when just cruising at say,35-45mph it would down shift to a hair over 1k but now its around 2.5k at 25mph or so and I'll have to speed up and let off to get it to down shift (jerks my noggin back Laughing

). Also,I get clunks... When in park if I go to reverse or to drive again comes the *pause* then a clunk that will sometimes shake the car lightly....

Considering how low of rpm's it would run after shifting through the gears at pretty much all speeds is it possible that I was somehow hitting OD while in drive? Cause now it seems like I have less gears and harder shifting.... I dont get it Laughing

.

Is my tranny on its way out or what?.... Fluid is a nice clean red if that helps (I know nothing about transmissions). 2.8 w/ 700HR I think its called @136k now.

Thanks Smile

.

BigDaddyVu · Posted: Sat Jun 09, 2007 12:20 am Post subject:

mine does that when its warm. but its fine when its cold.

Xophertony · Posted: Sat Jun 09, 2007 1:45 am Post subject:

i can't help with your issue, but i can help you on your termonology.
the transmission is called a TH700r4. it satands for Turbo Hydromatic 700 Reverse 4 forward speeds. i don't know what the 700 means.

EDIT*
actualy i do have an idea about how to fix it. five speed swap Cool

Sellmanb · Member Joined: 30 Nov 2004 Posts: 727 Location: Tigard, OR

It sounds like you dont have enough tension on the TV cable (it's not a detent Wink

). If you tighten it up some it'll raise the transmission line pressures, so it can shift into the next gears, as opposed to it just slipping around everywhere.

The TV cable shouldnt be used to adjust shift points

Quasi-Traction · Posted: Sat Jun 09, 2007 12:35 pm Post subject:

chevymad · Posted: Sat Jun 09, 2007 12:58 pm Post subject:

As I understood the th350/400 designations, the th350 was for 350 and smaller engines. The th400 was 400cid and up.

Twilightoptics · Posted: Sat Jun 09, 2007 2:21 pm Post subject:

The proper way to adjust the cable is to press the lever in and pull the piece all the way back as far as it will go. Then turn the throttle to WOT and it will ratchet to proper position.

steven23 · Posted: Sat Jun 09, 2007 3:17 pm Post subject:

Wow... I didnt expect this many replies so soon. It's funny you mention that Tony,Rod and I were talking about a 5 speed swap (but my schedule is sooo hectic right now Sad

). And Twilight,thats exactly how I did it (and have done it before which is why it suprized me this time). It shifts nothing like any automatic I've driven which is why I was wondering. I was told these transmissions are pretty durable (especially behind a 2. Cool

so I wont worry about it.

So technically I only have 3 gears while in drive but only 4 in overdrive? Either way its not as good as five huh? Thank you for explaining it to me. I always ponder what the letters and numbers mean when describing transmissions.

I'm gunna try tinkering with it today or tomorrow and see what happens after that. Or beat the hell out of it and see what happens lol.

Thanks everybody! Smile

Quasi-Traction · Posted: Sun Jun 10, 2007 12:36 pm Post subject:

blue89 · Posted: Mon Jun 11, 2007 7:48 am Post subject:

WC T5 700r4
2.95 3.06
1.94 1.63
1.34 1
1 0.78
0.74 0.7

On my V6 I actually run the TV cable disconnected. It shifts hard especially with the billet 1-2 gear servo thing. Why I do it is so it doesn't downshift on me if I'm powering through a corner.

You may have to reset the cable a couple of times before you get it just right. All my encounters with it seem to suggest that.

If you pull the ratcheting extender piece out more, it will take more pedal for it to downshift, but it will do it softer.

redlava · Posted: Tue Jun 12, 2007 3:46 pm Post subject:

I dunno if you are adjusting it correctly but you are supposed to push the tv cable into it smallest possition and then go full throttle it will require good amount of force to get the cable to adjust. This should set it correctly.

steven23 · Posted: Tue Jul 03, 2007 1:45 pm Post subject:

Well I think I found the problem....

Can I just pull the wire out a little and secure it somehow or can this piece be replaced?

Thanks.

blue89 · Posted: Tue Jul 03, 2007 1:59 pm Post subject:

Wow man, you broke it good! You're going to need to buy a new cable. You might try to glue it? Its a tricky connector end because it slides to let some slack out.

steven23 · Posted: Tue Jul 03, 2007 2:19 pm Post subject:

Ok,doesnt seem like it'd be that hard to replace but just to be sure this is the "transmission shift cable" and not the "detent cable" correct?

Thanks.

Edit: I think I'm wrong here,finally found my Haynes manual and its showing the throttle valve (tv) cable and all that... But a parts site I'm at is only showing either the tranny shift cable or the detent cable.... Confused

83Z28BlackBetty · Posted: Tue Jul 03, 2007 2:21 pm Post subject:

i may have one if you need a new one.

~JAKE

blue89 · Posted: Tue Jul 03, 2007 2:33 pm Post subject:

All it means is you have to shift for it. I like it like that, but I guess I'm a little different.

That is the detent cable. Its not bad to replace. There's a 10mm bolt on the tranny that holds the cable down, and then the snap fitting on the top. I would advise against using a parts store brand as sometimes they don't fit right at all. Go GM, new or used.

steven23 · Posted: Tue Jul 03, 2007 2:43 pm Post subject:

Called GM and it'll be $31.30 and they'd have to order it.... So Jake,how much for yours?

Thanks.