Question about 1991 Buick Riviera

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How do I change and replace the transmission seal and filter. How do I know if I need to replace the head gaskets.

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The rear transmission seal can be changed without pulling the transmission. The front seal requires the transmission to be separated from the engine. To change the rear seal you take off the drive line and use a seal puller. Head gaskets need to be replaced if you find water in the oil, have an overheating engine that runs rough or if the coolant smells like gas. One way to tell is to do a compression check on all cylinders.

Posted on Mar 25, 2011

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Change transmission fluid and filter 1998 mercury mystique


You will need to buy a "TRANSMISSION FILTER KIT," which will include a new transmission filter, uptake gasket, and pan gasket for your transmission. (They run about $20 or less on eBay.) Once you have done that, you will need to hoist the vehicle, and CAREFULLY remove the transmission pan by loosening one bolt a little at a time without removing them, and breaking the old gasket free (hopefully without making too much of a mess of transmission fluid). About half of the transmission fluid (about a gallon and a half) will be in the pan (the rest in the torque converter). It is usually sufficient to replace just the amount of oil in the pan (otherwise you need to remove the torque converter inspection plug on the bell housing and crank the engine to expel the seal, draining the other half of the fluid, then replace the bell housing seal).
Once you have drained away the transmission fluid in the pan, CLEAN THE PAN THOROUGHLY WITH A SHOP TOWEL, and carefully remove the bolts that secure the filter to the transmission valve body. (As I recall it is four 10mm bolts... but not sure on your year model).
Remove the filter, and remove any remnants of gasket on the uptake chamber between the filter and the valve body. MAKE SURE YOU REPLACE THE SMALL GASKET AT THE TOP OF THE FILTER WITH A NEW ONE, OTHERWISE THE TRANSMISSION WILL SLIP DURING THE 1-2 SHIFT DUE TO AIR BEING SUCKED-IN (been there).
Check for correct torque specifications for the filter mounting bolts before tightening them and DO NOT OVER-TIGHTEN THE RETAINING BOLTS.
Once you have replaced the filter, and your pan is clean, scrape away all remnants of gasket material from the mounting surfaces, and position the new filter. (This is easier if you use a tiny amount of silicone RTV to hold the gasket in place and keep it aligned with the pan mounting holes).
Replace the pan, tighten the bolts to spec, re-fill the transmission with the appropriate amount of NEW ATF, then test.

Jul 19, 2014 | Cars & Trucks

1 Answer

How to do a transmission fluid/filter change on a gmc 1500 2wd v8 350 step by step


Raise the vehicle. Refer to Vehicle Lifting. Place a drain pan under the transmission oil pan. Remove the oil pan drain plug. Remove the oil pan bolts. Remove the oil pan. Remove the gasket. Remove the magnet. Remove the oil filter. Remove the filter neck seal. The transmission oil pan gasket is reusable. Inspect the gasket and replace as needed. Clean the transmission case and the oil pan gasket surfaces with solvent. Install the filter neck seal. Install the oil filter. Install the oil pan gasket to the pan. Install the magnet into the bottom of the pan. Notice: Refer to Fastener Notice in Service Precautions. Install the oil pan to the transmission with seventeen bolts. Tighten the oil pan bolts to 11 Nm (97 inch lbs.) . Apply a small amount of sealant GM P/N 12346004 to the treads of the drain plug. Install the oil pan drain plug. Tighten the oil pan drain plug to 18 Nm (13 ft. lbs.) . Install Dextron Automatic Transmission Fluid. Lower the vehicle.

Jul 04, 2011 | GMC Sierra 1500 Cars & Trucks

2 Answers

Where is trans filter located


Hi,
The follwoing is from the GM Shop Technical Manual.
Changing the filter requires removing the transaxle oil pan and gasket,
Remove or disconnect

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  • Raise vehicle and suitably support.
  • Loosen oil pan bolts and drain fluid,
  • Remove oil pan attaching bolts.
  • Remove pan pan and gasket.
  • Remove the oiil filter using a long screwdriver pry filter neck out of the seal.
  • Check oil filter seal for damage or wear. If needed, remove and replace
Install or connect
  • install new oil filter and/or seal.
  • install the old pan gasket since it can be reused, unless sealing ribs are damaged. If damaged, use new gasket.
  • Install the oil pan and attaching bolts.
  • Tighten pan bolts to 13 lb. ft,
  • Lower vehicle.
  • Refill transxle to proper level with DEXRON III or DEXRON-IIE fluid.
  • Checkoil pan gasket for leaks,

May 21, 2011 | 1995 Buick LeSabre

1 Answer

Hi, I'm trying to change the transmission fluid but I can't find the drain plug. It's a 1997 Honda Civic EX automatic transmission. Thanks.


Honda usually doesn't use drain plugs on their automatic transmissions - you'll need to remove the transmission pan to change the fluid. You will need a new gasket for the pan and you might as well replace the filter since you'll be there - the filter usually comes with a gasket and it is a great idea to change it if it is the original. There is no identifying marks on that filter to know if it is the original or not. Make sure you remove all of the old gasket from the tranny and the pan and wipe both surfaces down with a rag soaked in carb cleaner to ensure a good seal.

Dec 15, 2010 | Honda Civic Cars & Trucks

2 Answers

My transmission leaks what should i replace


There are at least 5 places on the Automatic transmission that can over time, and mileage develope fluid leaks. Front converter seal at the front of the transmission,pan gasket in the center,dipstick tube o ring at the center on one side ,speed sensor o ring,and the tail shaft seal at the rear,of the transmission.
Place a flat piece or huge card board,under the engine and transmission,after driving you will see where the fluid,red in color is dripping. Its easier to spot exactly where the leak is comming if you can look under the car,while it is running, The easiest leak is the pan gasket,the dipstick tube, and the speed sensor,then the rear housing tail shaft bushing and seal.
If the front seal(converter seal) is leaking the transmission will need removed,and the seal,and maybe even the front pump bushing Replaced,it would be a good idea to replace the bushing esp if it has high mileage,80,000 or 100,000 miles of use.Change the fluid and the filter,while repareing the leak or leaks.Is a good idea.

Sep 17, 2010 | 1995 Chevrolet Camaro

3 Answers

How much transmission fluid do I put in my 2003 alero. I am changing the filter and gasket.


IT WILL TAKE 7 QUARTS FOR FLUID CHANGE.YOU NEED TO USE FACTORY GASKET.BECAUSE THE GASKET THAT COME WITH FILTER WILL LEAK.I HAD THAT PROBLEM.YOU CAN REUSE THE OLD GASKET.ITS THICK RUBBER GASKET WITH HOLDING HOLDING TABS THAT HOLD IT IN PLACE.IF GASKET LOOKS DAMAGED OR BAD ITS BEST TO BUY IT AT DEALERS SHIP.IT COST ABOUT $40.00 DOLLARS.THE GASKET THAT COME IN FILTER KIT IT TOO THIN.IT PLAIN.IT DONT HAVE SEALING BEADS IN IT.WHEN YOU PUT IT ON ADD FLUID TRANSMISSION WILL LEAK THROUGH THE GASKET.LOOK AT THE OLD GASKET LOOK AT THE DOUBLE SEAL BEAD IT HAS IT KEEP IT FROM LEAKING.

Jan 18, 2010 | 2003 Oldsmobile Alero

1 Answer

Need to change the transmission filter how and where is it located


Fluid & Filter Change Under normal service (moderate highway driving excluding excessive hot or cold conditions), the manufacturer feels that automatic transmission fluid should not need periodic changing. However, if a major service is performed to the transmission, if transmission fluid becomes burnt or discolored through severe usage or if the vehicle is subjected to constant stop-and-go driving in hot weather, trailer towing, long periods of highway use at high speeds, fluid should be changed to prevent transmission damage. A preventive maintenance change is therefore recommended for most vehicles at least every 90,000 miles (145,000 km).
Although not a required service, transmission fluid changing can help assure a trouble-free transmission. Likewise, changing the transmission filter at this time is also added insurance.
  1. Raise the car and support it securely on jackstands.
The torque converters on some transmissions are equipped with drain plugs. Because it may take some time to drain the fluid from the converter, you may wish to follow that procedure at this time, then come back to the pan and filter removal.

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Before removing the transmission fluid pan, insure that the area is clean of dirt and debris

2. Place a large drain pan under the transmission.

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Loosen all of the pan attaching bolts to within a few turns of complete removal


  1. Loosen all of the pan attaching bolts to within a few turns of complete removal, then carefully break the gasket seal allowing most of the fluid to drain over the edge of the pan.
CAUTION DO NOT force the pan while breaking the gasket seal. DO NOT allow the pan flange to become bent or otherwise damaged.

  1. When fluid has drained to the level of the pan flange, remove the pan bolts and carefully lower the pan doing your best to drain the rest of the fluid into the drain pan.ea833e6.gif


Once the pan is removed, discard the old gasket and insure that the mating surfaces are clean

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Inspect this magnet inside of the pan for any large pieces of debris. A light gray coating is normal

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Clean the pan thoroughly with a safe solvent and allow it to air dry

5. Clean the transmission oil pan thoroughly using a safe solvent, then allow it to air dry. DO NOT use a cloth to dry the pan which might leave behind bits of lint. Discard the old pan gasket.

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The transmission filter is secured by a mounting bolt (arrow). Some models may use two bolts

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Remove the filter mounting bolt ...


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... then pull the filter free from the transmission

6. If necessary, remove the Automatic Transmission Fluid (ATF) filter mounting bolts, then remove the filter by pulling it down and off of the valve body. Make sure any gaskets or seals are removed with the old filter. The transmission usually has one round seal and a rectangular gasket.

7. Install the new oil filter screen making sure all gaskets or seals are in place, then secure using the retaining screws, if applicable.

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Install a new pan gasket


8. Place a new gasket on the fluid pan, then install the pan to the transmission. Tighten the attaching bolts to 71-119 inch lbs. (8-13 Nm).

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Fill the transmission with the proper amount of ATF

9. Add three quarts (six quarts if the torque converter was drained) of fluid to the transmission through the filler tube.
10. Remove the jackstands and carefully lower the vehicle.
11. Start the engine and move the gear selector through all gears in the shift pattern. Allow the engine to reach normal operating temperature.
12. Check the transmission fluid level. Add fluid, as necessary, to obtain the correct level.

Nov 19, 2009 | 1997 Ford Explorer AWD

1 Answer

How replace transmission seal, gasket and filter


If you can pull and replace your trans yourself, you can get your drive axle seals, main seal, filter and gasket for $100.00 or less.

May 24, 2009 | 1989 Toyota Camry

2 Answers

Manual Transmission Filter?


The Borg Warner T-5 manual transmission has no filter. Assuming the leak is not really the rear main seal of the engine leaking, which is more likely, then it leaking from the front of the transmission. You will need to drop the transmission to get to the front seal on the first motion shaft. Unless you are really mechanically inclined or have a friend who is, leave it to a good shop.

Mar 03, 2009 | 1996 Chevrolet S-10 Pickup

2 Answers

Coolant near the transmission


its the head gasket. to be safe, i would suggest changing both seals but, the head gasket will leak in this direction .

Feb 27, 2009 | 1988 Jeep Wrangler

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