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Why does 2005 Chevy Cobalt Torque converter stays locked in at all speeds?
Wiki User
∙ 15y ago
a bad lock-up switch in the tranny.
Wiki User
∙ 15y ago
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What causes a car to jerk sometimes at different speeds?
Slippage in the transmission or a bad torque converter
What is lockup solenoid?
Lockup Solenoids refer to electronic gadgets in automatic transmissions that lock the torque converter in certain circumstances, such as at highway speeds.
What is A torque converter?
a major part of an automatic transmission... A torque converter is what couples the engine to the transmission. It acts a little bit like a clutch and allow the engine to drive the transmission. At slow engine speeds, like at idle, it slips so the engine will not stall while the transmission is in gear. As engine speed (RPM) increases it allows the engine to drive the transmission. This is just the basic idea of what a torque converter does.
RPMs in a cadillac go up and down at high speed?
Your car most likely has an automatic transmission. If you're noticing the rpms going up and down it is because your automatic transmission is using its torque converter. it uses the torque converter to get the transmission up to speed with the engine and then it locks but when the torque gets to be too much for the engine it unlocks and speeds back up again.
On a 1999 gmc sierra with a 4.3 vortec what would make it stumble at highway speeds after you level off from excelerating?
The solenoid that operates the lock-up torque converter (TCC) may be failing.
What does p0742 mean on a Chevy Impala?
P0742 means that your torque converter clutch circuit (TCC) is or was stuck on. In other words, the lock-up torque converter was engaged when it wasn't supposed to be. The torque converter uses transmission fluid at lower speeds to transfer motion from the part of the transmission connected to the engine to the parts of the transmission connected to the drive shafts. This is what allows you to stop your car at a stop light without having the car die. When the torque converter engages ("locks-up"), a clutch engages, creating a mechanical connection that makes both parts move together more efficiently at higher speeds (above ~49 mph). This allows you to get better gas mileage on the highway, since the fluid coupling is not very efficient at those speeds. If your TCC fails to disengage or engages when it is not supposed to, it will set this code. You may notice the car chuggling at lower speeds or dying at stops. This problem may be caused by a failing TCC solenoid in the transmission. The 4T65E transmission in Impalas is completely electronically controlled. However, it may also be caused by other transmission problems.
1997 Dodge Grand Caravan began a bumping motion at highway speeds maybe the automatic transmission was slipping I serviced the transmission replacing the fluid and the filter but did not work?
try a bottle or rear end friction modifer if the problem is torque converter shudder it sould quit in a matter of miles most people mistake torque converter shudder for a eng miss feels the same
Does bad catalytic converter inhibit you from going higher speeds?
Yes, a clogged converter will rob you of power and speed.
Would an 88 Chevy Celebrity run fine for around town use with no damage to the car if you unplug the torque converter so it will not lunge violently and die on hot days?
If the "lock-up" clutch on the torque converter is getting engaged at inconvenient time you would get the conditions that you describe. The lock-up torque converter is there to provide direct-drive when you are running at highway speeds. That can give you a little better economy. If you un-plug the torque converter you will mask the problem, but the fact is that you probably still have a bad relay or other condition that should be repaired. No, it probably won't hurt anything. But lock-up is there for a reason. I have but 300,000 miles on a 1986 with the lock-up clutch disconnected. My 1985 has 200,000 with the lock-up disconnected. Gms oem prosessor chip brings in the lock-up at speeds to slow for the 2.5 DUKE to handle. Take it from me a 500,000 mile guy disconnect the D--- thing! GETERDONE!
What are the torque spec on a 1989 Yamaha 350cc ATV?
The torque spec on a 1989 Yamaha 350cc ATV is 75 foot pounds at 2000 rpm. Torque is used to get the vehicle moving at low speeds until the horsepower takes over at higher speeds.
What causes howl in an automatic transmission between 60kph and 80kph?
A howl in an automatic transmission between speeds of 60 kph and 80 kph could signal a problem with the fan belt. Another cause could be an issue with the torque converter.
Why does my 1995 grand am auto trans lock up?
It could be the TCC valve, It's a Valve in the transmission that sets the torque converter. when going at highway speeds. but what happens is with the late 90s GM cars the heat from them transmission. when it hits like 200* the Torque converter wont unlock, hense why your transmission locks up. the valve cost about 40-50 bucks at any auto parts store. but the really sinker is the cost to install it.
