Leaking transmission fluid - 1991 Nissan Stanza

Get the leak sorted. Transmission is dependant on adequate fluid and hydraulics

What's causing this transmission leak? - Ford Truck Enthusiasts Forums

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Your radiator needs to be replaced. Chances are you have transmission and oil cooler lines going through them and there are mixing inside the radiator.

transmission slipping could be low transmission fluid level or need a transmission fluid and filter change.if transmission fluid was real low check for transmission fluid leaks around transmission oil pan gasket or fluid leaks around cooler lines or torque converter shaft seal. if you getting steam inside cab.your heater core is leaking.if transmission fluid level okay and filter been changed could have faulty over drive switch.

Possible leaks are 1. Transmission belly Pan gasket 2. Front pump/torque converter seal. 3. Transmission fluid cooler lines 4. Axle seals at right and left half shafts.

Leaking transmission fluid can usually be traced to 1 or 2 problems:

1. leaking transmission line - a line could be bent or it could be leaking around a fitting, the most common place for a transmission line to leak
2. the gasket around the transmission pan is worn - this would cause leaking and having the filter and fluid changed should fix this problem

To answer your other question, YES it is possible to overfill the transmission fluid. Check the dipstick (with the car running) and ensure that the level stays between the recommended marks.

IF TRANSMISSION LEAKING WHILE RUNNING LEAKING AT TORQUE CONVERTER SHAFT SEAL OR TRANSMISSION COOLER LINES GOING INTO RADIATOR LEAKING.YOU WILL LOSE MORE FLUID AT COOLER LINE BECAUSE TRANSMISSION UNDER PRESSURE THE OIL PUMP PUMPING IT THROUGH THE RADIATOR YOU WILL LOSE ALL YOUR FLUID QUICKLY IF LEAK COMING FROM COOLER LINES GOING INTO RADIATOR.DONT DRIVE VAN UNTIL FIX BECAUSE FLUID LOST WILL BE TRANSMISSION LOST.

Your transmission fluid runs to your cooling system to cool the transmission oil. So, in answer to your question, one of the two transmission lines (one in, bottom and one out, top) could be leaking from the cooling system.

Bring your vehicle in for a cooling system pressure check. Another thing to keep in mind when inspecting leaks is that where you see the leak may not necessarily be where the leak is from. While the leak will drip down, the wind from when you're driving will splatter the leak all over the under-carriage of your vehicle making it look like leaks are happening where they in fact, are not.

What do you need? I would cantact Ford of Canada in back of owner manual with letter, not phone, if issue is the same. TEXT:

In some of the affected vehicles, the transmission fluid cooler may develop a crack in the tube below the right hand (RH) mounting bracket from thermal and vibration fatigue. This may lead to a small transmission fluid leak and possible rough / harsh shifts. Dealers are to inspect the transmission fluid cooler for a grommet and possible fluid leak below the RH mounting bracket. Based on the results of the inspection, dealers will perform one of the following service

actions:

INSPECTION

1. Using a suitable light, look through the radiator grille and inspect the transmission fluid cooler mounting bracket for a grommet behind the mounting bolt. See Figure 1 and Figure 2.

Inspection Result Service Action

Grommet present - No further action required

Grommet not present and transmission fluid cooler not leaking - Install transmission fluid cooler mounting bracket

Grommet not present and transmission fluid cooler leaking - Install new transmission fluid cooler.

-----------------------------------------------------------

In some of the affected vehicles, the transmission fluid cooler may develop a crack in the tube below the right hand (RH) mounting bracket from thermal and vibration fatigue. This may lead to a small transmission fluid leak and possible rough / harsh shifts.

Dealers are to inspect the transmission fluid cooler for a grommet and possible fluid leak below the RH mounting bracket. Based on the results of the inspection, dealers will perform one of the following service

actions:

INSPECTION

1. Using a suitable light, look through the radiator grille and inspect the transmission fluid cooler mounting

bracket for a grommet behind the mounting bolt. See Figure 1 and Figure 2.

Inspection Result Service Action

Grommet present No further action required

Grommet not present and transmission Install transmission fluid cooler mounting bracket

fluid cooler not leaking

Grommet not present and transmission Install new transmission fluid cooler
fluid

CHECK UNDER VECHICLE IF TRANSMISSION FLUID UNDER TRANSMISSION MORE LIKELY PAN GASKET LEAKING FLUID.IF FLUID HAS NOT BEEN CHANGED THE PAN GASKET GET HARD LEAKS FLUID.THATS IF YOU HAVE SLOW LEAK.IF YOU LOSING LOTS OF TRANSMISSION FLUID ITS .LEAKING AT TORQUE CONVERTER SHAFT SEAL.LEAKING AT COOLER LINES.CHECK COOLER LINES FROM RADIATOR TO UNDER CAR WHERE COOLER LINES GOES TO TRANSMISSION. AND CHECK LEAKS AT FRONT DRIVE SHAFT AXLES SEALS