Gas pedal will get stuck after sitting awile but MAINLY car doesnt shift into its final hwy gear. Screams at about 3100 rpm at 60 mph. What do I do???? Do local PartStores sell books? ANY help would be great
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I would consider changing the vehicle speed sensor. When they go bad, they can really throw out a lot of bad data to the computer, resulting in unexpected behavior like you're experiencing. They're only around $20-$25. I hope this helps! :)
A/T The modern A/T has 4shift methods. Foot (passing) called detent TV kick down cable. the shift lever. the Vacuum modulator (load, = hills) and tail shaft RPM (speed) so seems like the MOD on the A/T is bad.
There is a cable that connects the transmission to the throttle boday on the engine. It hooks up to the same place as the gas pedal. Make sure this cable is moving freely. Its is called a detent cable or better known as the passing gear cable. If it is getting stuck or it is to tight it will hold the car in first gear til you reach a high RPM.
Check cable from throttle linkage to transmission that operates throttle valve on transmission. Not uncommon for the linkage at transmission to be pulled all the way when gas pedal pushed for quick acceleration, or passing, and stay stuck there. Engine off, wheels blocked for safety and/or park brake on, have someone depress gas pedal all the way to the floor slowly, while you watch linkage that cable is attached to on transmission. Then as they release pedal, it should move back in opposite direction. Spray it well, with WD-40 or similar lube and get it moving by hand if necessary to make sure it is fully returning. That may be all it is.
I'm a big chevy fan and the reason it wont shift is because of the big tires.What happens when you put big tires on it and still have the same gear ratio the tires slow down the speed alot.There for making the trans seem its still going slower.The only real adjustments you can do here are first adjust the kick down cable if it has one,Next would be change the gear ratio to compinsate for the big tires.But if you have the elctronic trans theres really nothing you can do to adjust the kick down.But if it does this cable controls how the truck shifts on where the gas pedal is.To adjust the kick down cable you need to look at the cables that go up to the throttle likage.the cable thats on the bottom is the one you need.Next behind the bracket that holds the cable is a metal tab its actually in the cable.Push that tab in and the center part of the cable which looks like a con push that all the way in release the tab.Next jump in the truck and press the gas pedal to the floor now its adjusted.Thats all you can do..Hope this helps you and have a great day..
your tranny is going out. VERY common with the 8 cylinders. Have seen it many many times. You should still be able to drive it for a year or so before it goes completely. When it revs up just let off the gas til the rpm's go down, and then slowly give gas again.