Guest donkeykongrape Posted March 28, 2006 Report Posted March 28, 2006 Well, for lack of a better description, the housing around the throttle cable that goes into the tranny (i have a 4t60 on a 3.1) has snapped off. I'm blaming it on the assholes who rebuilt it for me. Anyways, Is this anything I should be concerned about? I have noticed if i am going slowly, under 40, and I floor it, it refuses to downshift from 2nd back into 1st. As far as I can remember, it will downshift back into first up to 40-something mph. It USED to downshift even after this thing broke, but lately it hasn't. To clear things up, here are some pics (I don't think putfile allows direct linking): http://putfile.com/pic.php?pic=3/8520160580.jpg&s=x11 http://putfile.com/pic.php?pic=3/8520150842.jpg&s=x11 Quote
19Cutlass94 Posted March 28, 2006 Report Posted March 28, 2006 If it was a broken throttle cable, when you press the pedal nothing would happen, your car would idle. I cant tell anything from the pics, Still looking though... Quote
Guest donkeykongrape Posted March 28, 2006 Report Posted March 28, 2006 Here's a better representation... http://steve.neoturbine.net/pics/cut_supreme/100_2098.jpg A and B used to be one piece, as you can see from the broken plastic at point B....the throttle cable runs through it and it's still attached however i have reason to believe it is periodically getting snagged on the broken housing or something Quote
john99gtp Posted March 28, 2006 Report Posted March 28, 2006 isnt that the gear selector cable? i never heard of a throttle cable going into the tranny. does your car seem to have a hard time finding gears? (like, does N line up with the tranny in neutral?) hrm, that is odd Quote
Guest donkeykongrape Posted March 28, 2006 Report Posted March 28, 2006 It's not a gear selector cable, hence i loosely named it a throttle cable since it goes back up to the throttle. All I know is that when i open/close the throttle, that cable moves along with it. Quote
Supreme Cutlass Posted March 28, 2006 Report Posted March 28, 2006 What exactly is the engine doing wrong with it out? is your cruise control working ok? Quote
19Cutlass94 Posted March 28, 2006 Report Posted March 28, 2006 When your driving the car, does anything "funny/weird" happen? or just the issue when you stomp on it like mentioned above? Quote
Guest donkeykongrape Posted March 28, 2006 Report Posted March 28, 2006 cruise control is fine...i already stated, the tranny is late to shift....like i'd floor it, and it would downshift a second or two later. Also, if i'm going slower than 40mph...and i go to WOT, it refuses to go back into 1st like it used to a couple days ago. I just noticed this symptom earlier today. That housing thing has been broken since forever, i just now decided to bring it up in case it could be replated to my problem.[br]Posted on: March 27, 2006, 09:50:21 PM_________________________________________________funny/weird is a vague description, i don't exactly know what you mean but it seems to drive A-OK aside from that Quote
19902drlumina Posted March 28, 2006 Report Posted March 28, 2006 thats the kick down cable. also i think called (vt cable) not sure. mine was cracked also had alittle hard shifting from 1st to second replaced it and shifts better. Not hard to do but wont hurt u either. Quote
Calvin Posted March 28, 2006 Report Posted March 28, 2006 this is of course not to mention that you could damage your trans not replacing it, since it raises line pressure to prevent trans slipping under high load conditions as well as affecting shift timing. Fix it, or become yet another statistic (post) on W-body bitching about your dead OD tranny. Quote
Guest donkeykongrape Posted March 28, 2006 Report Posted March 28, 2006 i see. where can i buy this thing? Quote
19902drlumina Posted March 28, 2006 Report Posted March 28, 2006 i got mine at a jy other than that i dunno Quote
dbtk2 Posted March 28, 2006 Report Posted March 28, 2006 you can buy a new tv (throttle valve) cable at the dealer. You can get a used one which should work just fine at any salvage yard. This cable controls transmission pressure slightly and it controls upshifts and downshifts. The more you open up the throttle the more it pulls on the cable which pulls on the valve in the valve body in the trans which makes it shift later. It also controls downshifts, when you stab on the gas that valve moves and tells it to downshift. Without that cable on there it won't upshift or downshift at the right times. But you are still able to manually shift it up or down if you want. Shawn Quote
SleeperRed90TGp Posted March 28, 2006 Report Posted March 28, 2006 You should know Shawn. Jud[br]Posted on: March 28, 2006, 01:00:49 AM_________________________________________________You should know Shawn. Jud Quote
DaveFromColorado Posted March 28, 2006 Report Posted March 28, 2006 you can buy a new tv (throttle valve) cable at the dealer. You can get a used one which should work just fine at any salvage yard. This cable controls transmission pressure slightly and it controls upshifts and downshifts. The more you open up the throttle the more it pulls on the cable which pulls on the valve in the valve body in the trans which makes it shift later. It also controls downshifts, when you stab on the gas that valve moves and tells it to downshift. Without that cable on there it won't upshift or downshift at the right times. But you are still able to manually shift it up or down if you want. Shawn That's not all it does... it will also increase line pressure (same way the modulator does) They're real cheap at the dealership - it's known as a "kickdown cable" "detent cable" or "t.v. cable" - that's a real common spot for them to break - that's where it broke on my old '88 Buick, and on my old '90 Lumina, and several other cars. --Dave. Quote
mihela816 Posted March 28, 2006 Report Posted March 28, 2006 GM part #10163880. It's called a throttle cable assembly, throttle valve cable, or kickdown cable. $24.18 from GMPartsDirect. Quote
Guest donkeykongrape Posted March 30, 2006 Report Posted March 30, 2006 I called the local dealiership and he gave me a price of $52....wtf??? I didn't give him the exact part number as I did not know it at the time, but i told him it was the 3.1 and it was a throttle valve cable....maybe he still gave me the wrong price i dunno. I'll order it from GMpartsdirect =) Quote
dbtk2 Posted March 31, 2006 Report Posted March 31, 2006 you can buy a new tv (throttle valve) cable at the dealer. You can get a used one which should work just fine at any salvage yard. This cable controls transmission pressure slightly and it controls upshifts and downshifts. The more you open up the throttle the more it pulls on the cable which pulls on the valve in the valve body in the trans which makes it shift later. It also controls downshifts, when you stab on the gas that valve moves and tells it to downshift. Without that cable on there it won't upshift or downshift at the right times. But you are still able to manually shift it up or down if you want. Shawn That's not all it does... it will also increase line pressure (same way the modulator does) They're real cheap at the dealership - it's known as a "kickdown cable" "detent cable" or "t.v. cable" - that's a real common spot for them to break - that's where it broke on my old '88 Buick, and on my old '90 Lumina, and several other cars. --Dave. I said it controls pressure. Quote
DaveFromColorado Posted March 31, 2006 Report Posted March 31, 2006 you can buy a new tv (throttle valve) cable at the dealer. You can get a used one which should work just fine at any salvage yard. This cable controls transmission pressure slightly and it controls upshifts and downshifts. The more you open up the throttle the more it pulls on the cable which pulls on the valve in the valve body in the trans which makes it shift later. It also controls downshifts, when you stab on the gas that valve moves and tells it to downshift. Without that cable on there it won't upshift or downshift at the right times. But you are still able to manually shift it up or down if you want. Shawn That's not all it does... it will also increase line pressure (same way the modulator does) They're real cheap at the dealership - it's known as a "kickdown cable" "detent cable" or "t.v. cable" - that's a real common spot for them to break - that's where it broke on my old '88 Buick, and on my old '90 Lumina, and several other cars. --Dave. I said it controls pressure. missed that part ... no need to roll yer eyes and get nasty about it. Anyhow, it does more then "controlls transmission pressure slightly" - it controls it quite a bit. With your car in park, ideling, pull your TV cable tight, and listen - it max's out your trans pressure, and you can hear it trying to kill the engine. So before you roll yer eyes at me, and get nasty, realize I was ADDING on to what you were saying, in a friendly way, but if you wanna be an ass, that's fine, I can play that game too. so here's how the process works. the shift valves have springs in them, and are hydraulically heald closed, as the speed increases, the govener in the transmission will increase the pressure to the valves to overcome the spring and hydraulic pressures, as that pressure overcomes it, it will shift into the next gear, as you move the Throtle Valve in the transmission, it will increase the backforce to the valve, causing it do downshift, AND increasing the full line pressure to the clutches to hold them tighter to decrease slippage. so as you can clearly see, it does more then increase the pressure "slightly" - in fact all it does is control the pressure (increase and decrease depending on the location of the throtle valve) but it's how that pressure relates to the other parts inside the trans. that effects the timing of the gear changes. That being said, it's good to have this part working properly, to PREVENT slippage in the clutches, to help the transmission last longer. --Dave. Quote
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