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Npr van with jr403e transmission leaks out of vent

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My Van is over heating and I have no heat coming through the front or back vents?

This is the primary cause of engine overheating. Possible leak points include hoses, the radiator, water pump, thermostat housing, heater core, head gasket, freeze plugs, automatic transmission oil cooler, cylinder heads and block. ... A leak-free system should hold pressure for at least one minute.

Common Causes of Overheating ' ASC Industries, Inc. Van is over heating Google Search

Dec 13, 2016 | Cars & Trucks

1 Answer

What is that rubber line dangling from my transmission.

If the line comes out of the top of the transmission, it is most likely a vent hose and is normal.

Mar 06, 2015 | 1998 Chevrolet Astro Van

1 Answer

Npr diesel leaks air when primed why

Check all fuel lines for leakage

Nov 13, 2012 | Cars & Trucks

1 Answer

Trasmission leaking and slipping. When you put fluid in its all on the ground.only slips when low on fluid. Could it be the seal?

Depending on the location of the leak from under the van. With the van setting on level ground have someone to fill the transmission with fluid( do not overfill) look under van to see if the fluid is coming from the front or rear or middle of transmission. If you cannot look under the van then use a large piece of cardboard and slide it under the van before you try to fill it to locate the leak. leak could be front or rear seals leaking or the pan gasket leaking. hope this will help you.

May 12, 2010 | 2000 Dodge Caravan

4 Answers

Hello I have a 1997 Chevy Astro van with a 4L60e transmission, yesterday I lost my transmission and found fluid leaking like a sieve from the rear seal on the transmission (where the drive shaft connects)...

Ontop of the transmission there is a little tube. Its only about 2 inches long and the size of a drinking straw. Use a coat hanger or something simelar and clean it out. This is a pressure vent. They are known for plugging up with dirt and other stuff picked up from the road. Get it clean and replace the seal you should be fine.

Mar 08, 2010 | 1997 Chevrolet Astro

3 Answers

2001 Ford Windstar transmission fluid leak

Sorry!,..More than likely the front seal of the transmission has actually cut a groove into the torque convertor neck.I have seen these hundreds of times, when the van is hot the seal wont hold the fluid pressure behind it and trans fluid will leak past...also the lines/hoses are on the side of this transmission..the vent is located on top of this trans near the main connector,.not in the front(Ax4n).,, seriously go to an accredited trans shop only for this repairATRA......again sorry for the bad new..Bob Stinson

Jul 29, 2009 | 2001 Ford Windstar

1 Answer

Transmission Leak ONLY when A/C is on...Weird!

The air conditioning and tranny cooler lines both run into same condensor. Which is attached to the rear of the radiator. The condensor/heat exhanger will need to be replaced

Jul 09, 2009 | 1999 Ford Windstar

1 Answer

Transmission leak

you most likely have overheated the trans. and it has blown the fluid either out of the vent on top or out the dipstick tube its self. most cases just a top off and you should be good... there is also a tsb on re-routing the vent tube so it doesnt clog as easy

Jun 14, 2009 | 2001 Ford Windstar

2 Answers


i suspect the vents are controlled by vacuum and are not opening due to a vacuum leak.


Sep 01, 2008 | 2000 Chevrolet Astro

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