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Transmission Whine 89 Chevy Tuck

Why is transmission fluid in my coolant?

Mike Allen hit the nail on the head.The transmission cooler “lives” inside one of the tanks of your radiator. Most modern radiators have end tanks. Older cars have the tanks on the top and bottom. Regardless, you can tell where the tranny cooler is by looking for a pair of steel lines that enter the tank. The tranny cooler is the only interface where coolant and tranny fluid could possibly be intermixing.In order to fix your problem the radiator will have to be replaced; the tranny cooler is built integral to the radiator and not a separately replaceable component. It will no doubt be strongly suggested you flush and replace the transmission fluid …possibly replace the fluid filter …and flush and replace the coolant. This might cost the better part of $1000 …like 6 or 700 …depending on how expensive the radiator is.And like Mike suggested you need to get it fixed. I’ll go one better …like yesterday.

What are some symptoms of too much transmission fluid?

Excess transmission fluid will cause foaming in any transmission. Foam does not flow like oil, reducing cooling and lubrication. It also implodes on compression between gears or in the hydraulics of automatic transmissions, causing severe damage (pitting).In an automatic transmission, you will have higher temperatures and poor shifting, as it depends on solid hydraulic pressure, not spongy foam to move the clutches and bands.Automatic transmissions with dip sticks should be measured with the engine running, and consider the operating temperature. Note here how the heat affects the measurement. It should not be filled to the top when cold, or checked not running.If it does not have a dipstick, it is measured with the plugs on the side, depending on specific instructions per brand of car.Manual transmissions normally don't have dipsticks (some do). They are checked from a plug on the side of the transmission, and the level should normally be at the level of the plug, not above.

Will too much transmission fluid cause it to not shift?

Depends on what “too much” means. Automatic transmissions already take a large volume of oil. If you checked you transmission fluid first thing in the morning without starting your engine, you would find it way overfilled. Truth be told, that is the time to have the oil so overful. As soon as you start the engine, the transmission begins filling the torque convertor and all the passages in the valve body and case. Check the fluid now(in either park or neutral depending on manufacturer) and it will likely be a half quart low due to the fluid being cold. Once transmission is up to normal temps that half quart low is now right on the full mark.You would need to be quarts over full before it created an issue. Almost impossible to happen. Because it registers so far over full when checked without engine running, someone putting many quarts beyond full is highly unlikely to even happen. A quart over won't hurt anything.Quick way to remove a quart or litre is to open the return cooler line and drain a quart or litre. If you choose to run the engine to speed it up, it won't take much more that 10 seconds.

What are the symptoms of a bad transmission speed sensor?

On some vehicles, there are sensors that function specifically for certain parts of the vehicle. Sometimes a bad speed sensor will mess up the function of the ABS brakes (causing them to overreact or not kick in at all, which usually creates a light on the dash), other times it can cause erratic speedometer readings and/or (for auto transmissions) cause inconsistent shifts and it shifting completely out of gear into neutral at random. Some vehicles it will do all of these things at once, but you should get a CEL (check engine light) or ABS light to show up on the dash if one of these things are becoming problematic enough to cause issues.

What will happen if I drive with a very low transmission fluid?

It depends on whether your car is an automatic or manual transmission.Automatic: Automatic transmission fluid has multiple jobs in an automatic transmission. First, it is used for cooling the transmission. So, with low transmission fluid, your transmission will not be cooled properly. Second, it used to make the torque converter operate, and provide pressure to ensure proper operation of the various clutches and components within the transmission. Third, it is used to lubricate your transmission. If your transmission fluid is very low, the transmission will almost certainly be slipping. So it will feel like the vehicle is in neutral, with the engine revving, but no power being applied to the wheels. The shifts will be rough, if they occur at all, as the clutches are not getting proper pressure to perform shifts smoothly. If the transmission fluid is very low for a long period of time, the clutches will burn up from not being able to lock up properly, and the torque converter will likely fail due to improper fluid pressure. If you drive your automatic transmission vehicle with low transmission fluid, at some point, you will be looking at a bare minimum $2,000+ repair bill unless you are able to do the work yourself, in which case it will still be $1,000 plus.Manual: In a manual transmission, low transmission fluid will cause the gears, synchronizers, shift forks, and other components to wear quickly. The bearings within the transmission will also not be lubricated properly, and the transmission will begin to overheat. It will likely be quite difficult to shift the transmission between gears, if not impossible. A manual transmission with low fluid may last longer than an automatic transmission with low fluid, but the prognosis is still the same. Transmission failure will occur, at some point, sooner or later.If your transmission fluid is low, it is much cheaper and safer to fill it, rather than face the expensive repair bill. Fill the transmission fluid and keep an eye on your vehicle, as it is likely that you have a leak, especially if your transmission fluid is frequently low.

What causes no reverse but other gears work in manual transmission?

Either an issue with the shifter mechanism (most likely) which is preventing it from engaging. Try replacing the bushings on the shifter as a simple and cheap first step.Otherwise, it could be internal to the transmission. The reverse idler gear not engaging for some reason. Either the mechanism that engages it is off, or the gears straight cut teeth are worn out from engaging it while the car is in motion.

Why is my jeep wrangler getting bad gas mileage?

Welcome to the club.