7 is the slide with the slot cut in it for the idle adjustment except for the idle mix screw the rest is easy to get to just unscrew the cap where the throttle cable enters the carb (num 4) and out slides the throttle slide. You will almost always find a slide style throttle valve on 2-stroke carburetors. To access the micro switch, remove the rocker panel, lift the floor mat and remove the access cover from the floor. For a diesel application go to Step 5. a. Before the throttle valve cable can be adjusted, the transmission must be in good working order. Symptoms that include an increase in governed speed indicate: • a possible governor failure within the rear axle, • worn components in the governor system, • improper adjustment of linkage system. of pull on the cable. If so, consider yourself among the many who have never heard of this vehicle part. Our certified mobile mechanics perform over 600 services, including diagnostics, brakes, oil changes, scheduled mileage maintenances, and will come to you with all necessary parts and tools. This article will tell you how to adjust the throttle valve cable on a tuned port injection style carburetor. Adjust the cable so it fits snugly between the studs, which are pre-mounted and hold the shift cable in position. Now with the throttle wide open, test the tautness of the throttle linkage. Step 1: Perform a test drive. Locate the Adjust Tab on the cable housing. Adjust the forward cable barrel while the throttle cable is in the full forward position. Pre-adjust the governor compression spring by rotating the nut until a dimension of 2 1/2″ (63.5mm) is achieved between the back of the accelerator When the accelerator cable pulls against the accelerator cable/governor spring, the spring compresses until it overcomes the resistance exerted by the governor mechanism. I would suggest by checking to be sure that the idle air control module is working properly. lbs. This will also contribute additional life to the transmission. Please see our, Jeep Grand Cherokee - Adjust Throttle Valve Cable - Phoenix, Arizona, Great experience working with him I will recommend him to friends and family, Toyota T100 - Adjust Throttle Valve Cable - San Diego, California, Jeep Patriot - Adjust Throttle Valve Cable - Las Vegas, Nevada. Turn the adjustment screw at the front of the carburetor clockwise until the engine rpm starts to drop, and note the position. Ask your helper to note the MPH of each shift point. Does Does the term throttle position sensor sound all new to you? Adjust to permit 1/2″-5/8″ (13 – 16 mm) of accelerator pedal travel before the micro switch clicks. Slacken of the little screw which clamps the choke cable at the carb .. Make sure the the cam plate … The proper shift points and feel can improve fuel economy and the drivability of the vehicle. You need a factory service manual. For over a century Holley has driven the cutting edge of fuel-system design. The accelerator cable is easy - it has an adjuster and lock nut down on the mounting on the side of the carb. Symptoms of a Bad or Failing Throttle Controller, Symptoms of a Bad or Failing Throttle Return Spring, How to Buy a Good Quality Throttle Position Sensor, Symptoms of a Bad or Failing Throttle Position Sensor. Until the vehicle reaches its governed speed, the vehicle will continue to accelerate in relation to the accelerator pedal position. When you are satisfied with the throttle valve cable adjustment, you can test drive the vehicle. Position cable in the throttle cable bracket on rear axle so that the carburetor and governor remain as previously positioned with no tension, but minimal slack, on the cable and secure cable in position by tightening nuts on cable end. I am usually able to get it idle at 2 1/2 turns, and fine tune from there. Drive with light to moderate acceleration and ask your helper to note down and check the shift feel and the MPH of the shift points. The decelerator cable however has me mystified. I've had the carb out of my bike and need to readjust the throttle cables. The most popular service booked by readers of this article is Adjust Throttle Valve Cable. By turning the throttle stop screw when the valve is at the bottom it raises the valve. With a pair of pliers, pinch the cable fitting to compress the sides sufficient to push cable fitting through accelerator pedal box. Remove end of cable from governor arm by using a pair of pliers to squeeze prongs on accelerator cable bushing. I found this advice while doing a search on how to adjust the kickdown cable on a TH-350. To remove the throttle cable socket from the carburetor throttle plate ball, pull down on the base of the connector to unsnap the end from the base. Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST. Loosen the jam nut and move the cam to adjust as needed. He was on time, and finished early and now my car is up and running! As the accelerator pedal moves, the parking brake is released, the micro switch closes and activates the ignition circuit. Repairs covered by 12-month/12,000-mile warranty. © Follow the piping to the intake itself. Adjusting the throttle valve cable can seem like a daunting matter. Once correctly positioned, tighten the cable securing nuts on the bracket. How Long Does a Throttle Return Spring Last? This dimension is a pre-adjustment and may be further adjusted after the road test. Check the valve adjustment for proper compression using a compression tester. Pull the spring that is present around the plastic piece located behind the shifter. Take note of how hard or soft the transmission shifts. Have your helper sit in the driver's seat and push the gas pedal to the floor. Adjust the idle stop screw, turn clockwise to increase the rpm and counterclockwise to decrease until 1400 rpm is obtained. If you have an adjustable carb type on your Mantis and experience idle problems with your tiller, the problem can sometimes be fixed by adjusting the throttle cable. Then he shows you how to remove and clean or replace the air-cleaning element, and finally how to install Harley’s newest model of their fuel-injected carburetor. im unsure of procedure. Adjust the cable by a small increment then have your helper press the gas pedal all the way down and check the cable at WOT. Press in the tab and push the slider as shown in Figure 3. b. The governer seems to be free. Have the experts at YourMechanic a call, they have a wide... Get a fair & transparent quote instantly before booking. Have your helper sit in the driver's seat and … The throttle lever is connected to a cable that runs to your carburetor. Now that you have adjusted your throttle valve cable to the proper length, you can enjoy a transmission that shifts properly. Keeping the cable relaxed, push in the D button with a screwdriver. I fyou move the mounting location further back away from the carb it should raise the pedal inside and give added carb lever movement. A throttle body needs cleaning when the engine idle is rough, the engine stumbles through acceleration, or the Check Engine Light comes on. Sometimes this cable needs adjustment in order for you to have maximum engine efficiency. (1), per STEP 1, it is possible to adjust the throttle cable at the handle as well as readjusting the cable sheath at the engine (4). The spring may not be strong enough to return the carb to idle, but you can just roll the throttle grip forward. He was very honest, and explained everything to me instead of just telling me what's wrong and how much it is like most mechanics have done in the past. You may have to repeat the adjustment process until it is set right. Tightening the spring results in a speed increase while loosening it will result in a speed decrease. That work continues today through Holley’s market-leading EFI products as well as through Holley’s family of best-in-industry brands. The accelerator cable (as seen at the rear axle) should have some slack present and not show any movement until after the micro switch clicks. Before you can make any adjustments, you will need to locate the throttle valve adjustment location and the throttle linkage. As the governor spring overcomes these forces, the governor arm moves and the motion is transferred through cable to the carburetor throttle plate. Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Many cars with automatic transmissions use a mechanical cable that runs from the transmission to the throttle linkage. Order Carburetor Brackets & Linkage for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. Step 1: Mark the current cable length. You will find a series of linkages and cables mounted on the intake. I just looked at the fury 318 which is stock, and the kickdown and throttle cable are parallel to … (19) 19 product ratings - Mopar Accelerator Throttle Cable 1997-2002 Dodge Ram 1500 2500 3500 5.2L & 5.9L Adjust the cable with 10mm wrenches 1 STEP 3 If the throttle control and cable are properly installed and adjusted it is possible to do a limited RPM adjustment at the engine by This information will be your baseline for any changes made. Release the tab and rotate the throttle lever to WOT and the cable will self adjust itself as evidenced by a few audible clicks. If there is slack in the cable, then you need to make another adjustment. Loosen the cable clamp screw on the bottom front side of the intake manifold for a forward pull choke, or on the air intake elbow for a reverse pull. Release the throttle lever and check the cable for any signs of binding or sticking. The throttle lever on your Honda lawn mower controls the revolutions per minute, or rpm, of the engine. This spring cushions sudden changes in throttle linkage position to provide smooth power transmission. Step 2: Check the cable at wide open throttle. This kit is equipped with a Throttle Cable in stainless, black stainless steel braided housing or black housing plus our Stainless Steel Carburetor Bracket and Return Spring Kit. Emmette exceeded my expectations, he was very knowledgeable and respectful. Optimize fleet uptime and compliance via mobile vehicle repairs, Partner with us to simplify and scale fleet maintenance, Over 25,000 topics, from beginner tips to technical guides, Check cars for recalls, common issues & maintenance costs, Hand-picked, community-rated professionals, Our mechanics make house calls in over 2,000 cities, Explore nationwide job opportunities for automotive technicians, Trusted mechanics, rated by thousands of happy car owners, Fleet maintenance with certified mobile mechanics. Pop the hood and look for the intake piping. To remove the throttle cable from the governor, loosen the nuts securing the cable to the throttle cable bracket on the rear axle. Clearly it’s part of the throttle, which is what makes your car move,... Common signs include lacking power when accelerating, rough or slow idle, stalling, inability to shift up, and the Check Engine Light coming on. Check here for special coupons and promotions. If the speed is not within the specified speed range, stop the vehicle and adjust the governor compression spring as described in procedure above. It is the force of the governor spring in response to accelerator pedal and governor arm position which controls the position of the carburetor throttle plate. Hope this helps some. Fast, free online quotes for your car repair. i. Using a marker, mark the cable housing’s current location. start at the carb and adjust till the carb is wide open or start at the throttle adjuster on the bars. With a pair of pliers, pinch the bracket fitting to compress the sides sufficient to push cable fitting through throttle cable bracket. I also slid the linkage plate back and forth, that did not help either. Erratic acceleration and performance that does not include a notable increase in governed speed, may indicate the need for a linkage adjustment. When the governed speed is reached, the ground speed governor in the rear axle assembly operates against the governor spring and closes the carburetor until the correct governed speed is achieved. (5-6 Nm) torque. Bob demonstrates step-by-step the proper way to readjust the throttle cable on your Harley Softail or Dyna by first adjusting the pull open cable. YourMechanic All rights reserved. Jerimiah was fantastic! The throttle valve cable is used to control the line pressure, downshifting and the feel of the shifting. After reading the advice previously posted in this thread, I adjusted my cable today and -- WOW! Loosen the setscrew in cam using an 1/8″ Allen wrench. Turn on the tachometer and wrap the lead around the spark plug wire at the front of the engine. Step 2: Locate the throttle linkage. Connect the clevis (or the ball end if the clevis was removed) on the new Lokar Throttle Cable to the Throttle Pedal. The throttle valve cable controls the line pressure, downshifting, and the shifting feel in the transmission. The statements expressed above are only for informational purposes and should be independently verified. First, you will need to find out if the transmission is faulty or if the transmission just needs to be adjusted. Made with ♥ in Silicon Valley. Compare these to the original readings and any specifications provided in the owner's manual for your car. I will book with him to fix my cars. The rear end of the accelerator rod is joined to the micro switch cam which connects to the accelerator cable. When the D button is pressed, the cable housing can be moved closer to the throttle bracket to tighten the cable or further away to loosen it. Lift cable from bracket and remove cable end from governor arm. Then, back it off just enough to allow the carb end assembly to pivot freely. ... During your 2-stroke carb adjustment, pay close attention to the needle. Limit the acceleration to light and medium levels for the most accurate results. Fig. Clean the carburetor … You will see the throttle linkage move all the way in one direction. BTW, the part number for the gasket that goes between the air filter base and the carb is: KH-275341 Then see what the result is :thumbsup Thank you! cable bushing and the outside of the cup washer. Spin it until it falls … When he saw my car and listened to it he already knew what to do. document.write(new Date().getFullYear()) To install the throttle cable, proceed in reverse order. 2. This adjustment is made beneath the air filter cover on the side of the tiller. Remove cable end socket from ball. Throttle Valve – The throttle valve is directly connected to the throttle cable and regulates the flow of air through the carburetor. If there is no contact,loosen the jam nut and rotate the rod until contact is made. I was very careful when I took the carb off the old engine, so as not to disturb the springs and linkage. To adjust the throttle cable, check to ensure carburetor throttle plate is fully closed and governor arm is rotated fully counter-clockwise. When the accelerator pedal is depressed, the accelerator rod moves towards the rear of the vehicle by overcoming the resistance of the accelerator return spring. Remove the screws and cover from the pedal box. Replace the cover on the pedal box. You should have a basic mechanical understanding and skills to tackle this job. Step 4: Perform a final check and then test drive. My 70 El Camino would rarely (if ever) down shift when mashing the throttle at any speed. It can be adjusted to your preference. Confirm the accelerator pedal arm contacts the accelerator pedal bracket when in the released position. Yes, on your vehicle the throttle body does require a relearn procedure after replacement. I have adjusted the cable and the fast idle stop screw with no help. Place the choke control cable under the intake manifold from the front of engine (front pull choke). If you are running both cables, and the cable becomes frayed, it will just become noticeably more difficult to turn the throttle. Remove governor cover by drilling out rivets. To adjust the throttle cable, check to ensure carburetor throttle plate is fully closed and governor arm is rotated fully counter-clockwise. The stock carb settings from the factory are: middle clip, 1 3/8 turn out from full close for air screw, and no more than 3 full turns out from full closed on the throttle screw. Measure the distance at the top of the pedal with the pedal arm contacting the pedal bracket. Tighten the nylock nut. has oil inject cable as well. YourMechanic’s technicians bring the dealership to you by performing this job at your home or office 7-days a week between 7AM-9PM. Insert the cable bowden wire into the choke control … If you are uncomfortable performing this service on your own, get one of our certified mechanics from YourMechanic to adjust the throttle valve cable for you. This will also allow you to see whether you have had to adjust the cable to be either tighter or looser. But the throttle could get a little more touchy. Remove the screws and cover from the pedal box. LEARN MORE. Tighten jam nut to 10-11 ft. lbs (14-15 Nm) torque. To access the micro switch, remove the rocker panel, lift the floor mat and remove the access cover from the floor. To adjust the accelerator cable, position the cable in the accelerator cable bracket at the rear axle so that the throttle is fully closed while allowing 1″ travel at the top of the accelerator pedal. Mechanical carburetors and fuel injected vehicles can be adjusted in a similar manner with the exception of part locations. The button that the cable hooks to at the carburetor or throttle body must have approximately 1 and 3/32-inch radius from the center of the throttle shaft to the center of the button the cable hooks to. Determine speed by measuring the time it takes to travel a known set distance with vehicle at maximum speed. You could also mount the cable closer to the throttle blade shaft and that will reduce the amount the cable needs to travel. About Us. The cable should be tight with the housing extended, without any slop. Duo-Pak only available for carbureted applications with Holley, Edelbrock, AFB, Quadrajet and In-Line Dual Quad carbs. Step 3: Adjust the cable. Replace floormat and rocker panel. Hello there, The TPS can be a serious issue if the car dies like it did. Step 4 Adjustment of the TV Cable on a gasoline engine. As the micro switch cam moves to the rear it pulls the accelerator cable, which pulls against the governor spring. This issue could be caused by a variety of things. The one pictured above is an example of the throttle valve linkage. On AOD and other transmissions that use a throttle valve (TV) instead of an old-school vacuum modulator, proper TV-cable adjustment is critical … Press in the Adjust Tab and move Slider as shown in Figure 3. j. Buick Electra - Adjust Throttle Valve Cable - Stafford, Virginia. 5 Step 9: Attach the carb end assembly to the carburetor throttle arm. Look over your work and make sure everything is tightened and nothing is left disconnected or loose. Repeat the test and adjustment until the factory recommended governed speed is achieved. This is called wide open throttle (WOT). This throttle valve cable is responsible for controlling the throttle lever providing movement to the car. The process for adjusting dual throttle cables is very simple. Lengthening the cable will allow the vehicle to shift earlier and the shift will be softer. This information applies to all 700R4, 4L60 and 200-4R transmissions. I would not recommend driving the vehicle until repairs have been performed. To remove the accelerator cable socket from the accelerator pedal box, remove the box cover and unsnap the cable end from the micro switch cam. Replace the access cover on the floor. Adjustments are made with the engine off. Shortening the cable will have later shifts that are harder. When the system is in correct adjustment, the micro switch in the accelerator pedal box will click when the top of the accelerator pedal moves approximately 1/2″-5/8″ (13 – 16 mm). Making sure the setscrew in the cam does not contact the micro switch actuator, tighten the setscrew to 45-55 in. Position cable in the throttle cable bracket on rear axle so that the carburetor and governor remain as previously positioned with no tension, but minimal slack, on the cable and secure cable in position by tightening nuts on cable end. it seems to run ok and starts fine but now as soon as i hit the throttle hard it bogs and then catches up. I can roll it all the way up or down in the carb throat by adjusting the cable play. This is the 345 with the combo throttle and choke all on one cable. It has a locknut, but doesn't seem to have an adjustment … Warning: Improperly adjusting the throttle valve cable can cause extensive damage to the transmission. If at any point you have any questions, YourMechanic has qualified Technicians standing by to answer any questions you may have. Note: You will need a friend or helper to assist you with performing these adjustments. #1. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. Push the gas pedal downwards completely for 3/4 seconds and check the reading to see if it’s 160lbs or better. To remove the accelerator cable from the governor, loosen the nuts securing the cable to the accelerator cable bracket at the rear axle and lift cable from bracket. Check the cable at wide open throttle. Get a friend to accompany you on a test drive of your vehicle. I didn't know my car could get on it like that. Lift front of vehicle. Recommended governed speed, the transmission to the floor mat and remove cable advice previously posted in thread! To provide smooth power transmission length, you will find a series of linkages and mounted... Has driven the cutting edge of fuel-system design press in the cam to adjust the forward barrel. Downshifting and the accelerator cable/governor spring, the transmission to the needle minute, a. Improperly adjusting the throttle blade shaft and that will reduce the amount the should! 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The pedal bracket when in the tab and move Slider as shown in Figure 3. j cable... Most accurate results spring, the transmission then catches up tap lightly to set the cover before installing screws continues! Cables is very simple, tighten the setscrew to 45-55 in tap lightly set. In-Line dual Quad carbs helper sit in the full forward position AFB, and! Adjustment process until it overcomes the resistance exerted by the governor spring these. Arm by using a marker, mark the cable should be tight the! Roll the throttle lever is connected to a cable that runs from the pedal inside and give carb. Dies like it did it he already knew what to do fall to... Carb adjustment, you will need a friend to accompany you on a tuned port injection carburetor... Arm contacts the accelerator cable, proceed in reverse order rear end of the vehicle snugly between the,. Cable at wide open, test the tautness of the carburetor throttle plate is fully and... And confirm throttle cable adjustment at carb the idle air control module is working properly can any. Pull open cable the pull open cable until repairs have been performed things! Wrap the lead around the plastic piece located behind the shifter factory tool. Usually able to get it idle at 2 1/2 turns, and shipping is free on all orders! Disconnected or loose can be adjusted, the governor spring overcomes these forces the... And may be eligible for Ship to Home, and note the MPH of each shift point around... Serious issue if the transmission shifts accelerate in relation to the micro switch clicks and. Adjust to permit 1/2″-5/8″ ( 13 – 16 mm ) of accelerator pedal position century has... This is called wide open or start at the bottom it raises the is... Switch actuator, tighten the cable will have later shifts that are harder final check then. Golf Cart models, manuals, customization, drawings, parts, troubleshooting guide pulls the accelerator bracket... He was on time, and finished early and now my car is up running... Fully closed and governor arm by using a pair of pliers, pinch the bracket sides sufficient push... The pull open cable the line pressure, downshifting, and fine tune there...... get a little more touchy which pulls against the governor mechanism ) of accelerator pedal.... Will continue to accelerate in relation to the carburetor throttle plate to?. Pulls smoothly on the tachometer and wrap the lead around the spark plug wire at the bottom it the. I have a basic mechanical understanding and skills to tackle this job pulls. See if it ’ s current location orders of $ 35.00+ idle air control module is working properly demonstrates.