- To remove the key cover, use a flathead screwdriver or a key.
- Battery Cover should be removed.
- Get rid of the dead battery.
- Place the Plus+ Side Up while installing the new battery.
- Put a new battery cover on.
- Switch out the key cover.
- Examine the key fob.
In This Article...
How can I tell whether my kickdown wire is damaged?
Signs of a Failing or Bad Kickdown Cable
- The transmission makes quick changes.
- Car shifts quickly and early.
- Transmission shifts happen late and slowly.
Do you need a kickdown cable?
A functional kickdown wire or switch is actually unnecessary if you don’t mind manually downshifting with the shift lever upon passing. The ultralightweight T-bucket has so little inertia that it may not even require manual downshifting to engage passing gear.
Impact of throttle cable on transmission?
A mechanical cable that connects the transmission to the throttle linkage is found in many vehicles with automatic transmissions. This throttle valve cable is in charge of regulating the throttle lever that moves the vehicle. The line pressure, downshifting, and shifting feel are all managed by the throttle valve cable. The transmission can shift early, late, or not at all when the throttle valve cable is out of specs.
The gearbox needs to be in good operating order before the throttle valve cable may be changed. To start, you must determine whether the transmission is broken or only needs to be adjusted.
This post will explain how to modify the throttle valve cable on a carburetor with tuned port injection. With the exception of part placements, mechanical carburetors and fuel-injected automobiles can both be changed similarly.
Warning: Improper throttle valve cable adjustment might seriously harm the transmission. To complete this task, you should have a basic understanding of and proficiency with mechanics.
Note: You will require assistance from a friend or helper to make these alterations.
What does a transmission kickdown accomplish?
The transmission will automatically engage kickdown and shift down to a lower gear when the accelerator pedal is pressed all the way to the floor (beyond the regular full position).
In the kickdown position, releasing the accelerator pedal will cause the transmission to shift up again.
Safety function
To help prevent the engine from overheating, the downshift protection feature of the transmission control module is included.
In some circumstances, the transmission will inhibit downshifting or kickdown if doing so will result in an engine speed (rpm) that could harm the engine. The original gear will continue to be picked if the driver continues to try to downshift or kickdown while the engine is running at a high rpm.
Depending on the engine speed, the vehicle can downshift one or more steps at a time with kickdown. When the engine revs are at their highest, the car changes into an upshift to protect the engine.
Can a 700r4 be operated without a TV cable?
At the absolute least, the TV cable needs to be connected to the carburetor and set up correctly in order to operate a 700-R4 transaxle behind a carbureted engine without a computer. The TV cable regulates line pressure and shift points, unlike your TH350 analog cable, which is just a simple kickdown wire.
A Turbo 350 transmission is what?
For Chevrolet, Buick, and Pontiac automobiles starting in 1969, General Motors developed the TH350 or Turbo 350 three-speed automatic transmission. The 327 and 350 V-8 small-block Chevy engines were frequently paired with the Turbo 350.
One of the best three-speed automatic transmissions ever made is the Turbo Hydramatic 350, better known as the TH350.
The TH350 is an excellent choice for usage in smaller vehicles because of its balance of strength and size.
Up until 1984, the Turbo 350 was a popular engine choice for rear-wheel-drive GM automobiles and trucks. Although the Turbo 350 was best suited to V6 and V8 small block engines, it was gradually phased out from 1982 to 1984 and replaced by the 700R4, after which the Turbo 350 was discontinued.
How does a cable for a throttle valve operate?
The purpose of the throttle valve cable is to transmit the motions of the carburetor’s throttle to the valve body’s throttle valve plunger. This enables throttle opening to raise line pressure and throttle valve pressure in accordance with gear upshifting. Additionally, it manages the transmission’s downshift timing.
Can a Turbo 400 be kicked down with a cable?
The acceleration rush that happens after applying strong throttle while driving at low speed is well-known to any hobbyist familiar with automatic transmissions. The secondary barrels opening, the transmission downshifting, and the speedometer and tachometer sweeping clockwise often produce a mechanical symphony during this operation. However, if a Turbo 400 were to be installed in an older Pontiac without a kickdown switch, a significant portion of the enjoyment might be lost.
The Turbo 350 and Turbo 400 are two of the most popular three-speed automatic transmissions used in performance applications today. Both are robust, dependable machines that are internally tuned to upshift in a predetermined range depending on both speed and engine load. Additionally, they are built to downshift when we stab the throttle to accelerate quickly or when the situation calls for higher engine speed to maintain vehicle speed.
Despite how closely the two gearboxes operate, downshifts in each transmission happen very differently. A cable that is installed on the intake manifold close to the carburetor is used to mechanically control the Turbo 350 kickdown function. A mechanical detent valve inside the gearbox is triggered by the throttle linkage when it reaches a particular point, allowing the transmission to go into a lower gear. In order to achieve the same result, the Turbo 400 uses an electronic switch to activate a detent solenoid on the valve body. Both systems appear to function equally well and are rarely prone to failure.
The kickdown switch for the Turbo 400 was positioned on or close to the carburetor when production vehicles first started to appear in the late 1960s. In later years, it was put on the throttle pedal and moved to the passenger compartment. Any enthusiast who swaps a Turbo 400 into an older Pontiac with a different transmission must also install a kickdown switch; otherwise, downshifts won’t work as they should. Bill Schwanz, the owner of a 1964 Catalina, faced a similar predicament earlier.
Early in the 1990s, Schwanz bought his Catalina convertible and immediately started rebuilding the car’s original engine and transmission. However, he discovered the original 389 block was shattered during disassembly. The 400 engine and Turbo 400 from a ’74 Pontiac were located and fitted by Schwanz, who had more cruising than concours restoration goals. Despite the fact that the transplant was successful, the absence of a kickdown switch created a significant gap in how it felt on the road.
Follow along as we modify this Pontiac’s attitude by installing an aftermarket kickdown switch kit.
Why does my automatic transmission automobile jerk when changing gears?
Transmissions that are in good working order maintain your ride comfortable when shifting gears. Automatic transmissions that jerk, tremble, or shift harshly could indicate that the fluid in the transmission needs to be changed or is low. Abnormal gear shifts in a manual transmission car could point to worn clutches, damaged gear synchros, or other, more serious problems.
All automatic vehicles have kickdown, right?
When kickdown is activated in an automatic vehicle, a lower gear is engaged, increasing the engine speed (RPM, or Revolutions Per Minute). Power increases as engine speed does. Kickdown would be used for:
- dragging a large weight
- ascending a hill
- passing a different car
Overtaking Another Vehicle
Kickdown has the advantage of being convenient and easy to use. The driver only needs to depress the accelerator pedal all the way to the floor to shift gears instead of using the manual gears at the gear shift lever. Thereafter, a gear downshift will take place to enable faster acceleration. When the driver puts the accelerator pedal back in its regular position after passing another car, the gearbox will change into a higher gear.
Driving Uphill
Modern automatic cars have advanced significantly over the years thanks to sensors and computers. The gearbox control program frequently selects the appropriate gear for every given condition using the numerous sensors on the vehicle.
The technology, meanwhile, doesn’t always get it right, and you can find yourself going up a hill while the car is having trouble moving forward. Here kickdown can be useful. Simply “floor” the accelerator to initiate a downshift, and the additional engine power will assist the vehicle in ascending the slope. Return the accelerator pedal to its regular position once you’ve reached the top so that the transmission may change into a higher gear.
Towing a Heavy Load
The transmission of an automatic car is made to function within the limits of the vehicle’s particular weight. The gearbox may not function as it typically does if you are towing a high load.
There may be a tow button on some cars or trucks that, when depressed, holds the transmission in a lower gear and maybe shifts it earlier as well. You might have to utilize the manual gears or kickdown if your automatic automobile doesn’t have this feature, especially when going uphill.
Do all Automatic Cars have Kickdown?
The kickdown feature is present in almost all automatic vehicles. The driver must depress the accelerator pedal all the way to the floor in order to activate the switch in earlier automatics or rudimentary modern automatics. When the switch is pressed, kickdown takes place, which causes a one-gear downshift.
The majority of contemporary automatic vehicles have electronic accelerator pedals, and in combination with a number of sensors, a kickdown may take place without the driver having to depress the pedal all the way.
A modern automatic car may downshift two gears for even more power if the driver pulls the accelerator pedal all the way down, but only if the gearbox first assesses that the engine won’t overrev.
What does a 700R4’s TV cable do?
Line pressure, shift points, shift feel, half throttle downshifts, and detent (full throttle) downshifts are all controlled by the TV cable on the 700R4 and 200-4R gearboxes. Therefore, if the TV cable is not properly adjusted, it can result in a number of transmission issues.
700R4 or 4L60E: Which transmission is superior?
The Good and the Bad of 700R4. Turning to the 4L60E transmission, its fundamental benefit is that electronics replace the TV cable and the spinning dervish of weights and springs that were previously required to establish shift control.
What RPM is the proper shift for a 700R4?
Concerning 700R4 shift points (Ingar, Norway) The automobile shifts automatically, running at roughly 3800-4000 rpm wide open in first, 4500 in second, and around 4000 in third.
Which transmissiona 350 or 400is better?
1. How different are Turbo 350 and Turbo 400, and which one should I choose? They are broadcasts that are entirely different. The Turbo 400 was created to follow higher-torque applications like huge blocks because it is bigger, longer, and heavier than the Turbo 350.
Can a Turbo 350 transmission handle a certain amount of horsepower?
The Stage 1 TH350 is capable of 450 horsepower. The Stage 2 version (PN PA35102), which has 550 horsepower and retails for $1,500 with a real-world street pricing of $1,175 from most retailers, is an option for those looking for something a little more potent. A typical one-year warranty is included with both transmissions.
Can a Turbo 400 handle a lot of horsepower?
The TH400’s stock performance is limited to about 400450 HP/TQ. If the TH400 is installed properly (excellent endplay, etc.), 800 HP on an otherwise stock engine is not a problem, and the 34 element sprag is a sensible addition above 450 HP or any drag usage. However, only ONE nearly free alteration and some minor valve body calibration tweaks are required.