luminator94 Posted March 30, 2003 Report Posted March 30, 2003 Well, I finally got my new engine in the Cutty and its running great. Flushed the cooling system out today, and put in some fresh Dex-Cool. Also changed the fuel filter today to. And just like clock work, there's something going on with the transmission now, and it is something that I noticed before replacing the engine. The problem only occurs in overdrive. What happens is when it goes into overdrive, and I very slowly acclerate, the car jerks and there is a slight flutter on the tach until I kick it down into a different gear. This is getting very annoying and is starting to worry me. The fluid level is right and the fluid itself looks normal and I just changed the fluid/filter/gasket about 2 months ago, and the magnet looked great. I'm really starting to HATE this f'in car! :cuss: Anybody think they can give it a shot? Thanks in advance. Aaron Quote
Robby1870 Posted March 31, 2003 Report Posted March 31, 2003 does it only do the shuddering at low rpms in overdrive? Like when it first shifts to overdirve at like 50 or 55mph? Robby Quote
luminator94 Posted March 31, 2003 Author Report Posted March 31, 2003 does it only do the shuddering at low rpms in overdrive? Like when it first shifts to overdirve at like 50 or 55mph? Robby Yes, after it shifts into overdrive around 50. Say I'm doing 50, and the tranny is in OD, and I slowly accelerate, the tranny will jerk and the tach will flutter until I kick it down into a different gear. Aaron Quote
Robby1870 Posted March 31, 2003 Report Posted March 31, 2003 man that is strange. You know the 4th gear on these trannies is very weak. So, you havent driven it hard have you or done a lot of top speed runs? Another question, do the rpms go down, up or both when it jerks? Cuz, I thought my tranny was going south on me cuz the rmps would go down and it would stutter and jerk. But, the problem was the crank position sensor wire was shortin out. It really felt like the tranny to me. It would jerk around and around 50mph, the normal rpms is like 1500 and it would bounce down to like 1000 or 1100. It felt like the tranny. But, it eventually got worse and would do it in all gears. But, at first, I only noticed the problem in OD. The only other thing I can think of the torque converter......but its locked up in OD.....so it shouldnt make the rpms jump down, if it was slippin, the rpms would shoot up and you would lose power. Well, let me know on those like 18 questions, cuz this is sort of weird. Robby Quote
brian89gp Posted April 1, 2003 Report Posted April 1, 2003 Do the rpm's go up and down at a regular pattern and the car kinda feels like its slipping in and then slipping back out again? If thats the case i'm betting its the PWM solonoid. My mom's 99 Buick was doing the same thing and I took the PWM wire out of the connector and it fixed the problem. Quote
SmokesGTP Posted April 4, 2003 Report Posted April 4, 2003 Mine does that just to a lesser extent than yours. I think its just the TC lockin up cause on mine at about 49 mph it locks up and the rpm's flutter up just for a split second then it jerks and it locks up. At least thats what I always thought. Quote
brian89gp Posted April 4, 2003 Report Posted April 4, 2003 The PWM solonoid regulates fluid pressure to the TCC solonoid. GM came up with it to soften the TCC engagement, and that short 'flutter' you feel before engagement is the PWM solonoid doing its work, but for some reason the PWM solonoid will start malfunctioning so you get a continous 'fluttering' whenever the TCC is engaged. Quote
Robby1870 Posted April 4, 2003 Report Posted April 4, 2003 :withstupid: So, I figure, time for a new solenoid Robby Quote
brian89gp Posted April 4, 2003 Report Posted April 4, 2003 Since you got to take the side cover off just to get to it, I would suggest just unplugging it. No harm done. Quote
luminator94 Posted April 5, 2003 Author Report Posted April 5, 2003 Since you got to take the side cover off just to get to it, I would suggest just unplugging it. No harm done. What side cover? I'm not to familiar with the trannies on these cars other then the pan and gasket, never had a problem with them until now. Aaron Quote
Robby1870 Posted April 5, 2003 Report Posted April 5, 2003 The side pan, is the outer convering of the tranny. Follow the tranny from the motor, and on its far outside, it should be close the drivers side axle and what not, is the side pan. I dont know how to take it off though. Robby Quote
brian89gp Posted April 5, 2003 Report Posted April 5, 2003 Its the verticle pan on the drivers most side. You pretty much have to remove the transmission to get that pan off, that is why I suggest at least unplugging the PWM wire on the trans plug first to test to see if that is indeed the problem. If you want to try this then i'll get you the wiring diagrams so you know which of the 7 wires to pull out of the plug. Quote
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