AC Evaporator core leak
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AC Evaporator core leak
1997 mounty 5.0 v8:
Noticed a massive leak after cleaning my TB and intake duct work today (pulled a vacuum line on top of the intake, could this have caused it? I doubt it) Traced it to the AC evaporator core (fluid leaking down the backside of the passenger side wheel well. I put my hand under the evap core while the AC was on max and felt cool air. the low pressure lines were ice cold. Should I replace the evaporator core to fix the leak? has anyone had this issue? 90 degree weather with no AC sucks.
Edit: it is blowing hot, mechanic mentioned something about the blend door
Noticed a massive leak after cleaning my TB and intake duct work today (pulled a vacuum line on top of the intake, could this have caused it? I doubt it) Traced it to the AC evaporator core (fluid leaking down the backside of the passenger side wheel well. I put my hand under the evap core while the AC was on max and felt cool air. the low pressure lines were ice cold. Should I replace the evaporator core to fix the leak? has anyone had this issue? 90 degree weather with no AC sucks.
Edit: it is blowing hot, mechanic mentioned something about the blend door
Hotshot
Joined: Jul 2005
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you need to determine if you have a gas leak or not.. You install gauges and check the fill level. If the pressures are right, then the " leak" might be an old stain ? If there is gas leaking out, then the pressure will drop to zero and you will not have cool air or cold lines...
If the lines are cold and the air inside the cab is hot, then you possibly have a blend door problem. The broken door or controller will allow the air to go thru the heater core and get hot instead of going thru the cooling coil to get cool... The blend door has absolutely nothing to do with a gas ( Freon) leak in the core.
The vacuum hoses control the direction the air flows... to the dash, floor, or defrost.. they do not control the temp. You may have a vacuum hose that shuts off a valve in the heater hose when the AC is engaged.
If the lines are cold and the air inside the cab is hot, then you possibly have a blend door problem. The broken door or controller will allow the air to go thru the heater core and get hot instead of going thru the cooling coil to get cool... The blend door has absolutely nothing to do with a gas ( Freon) leak in the core.
The vacuum hoses control the direction the air flows... to the dash, floor, or defrost.. they do not control the temp. You may have a vacuum hose that shuts off a valve in the heater hose when the AC is engaged.
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you need to determine if you have a gas leak or not.. You install gauges and check the fill level. If the pressures are right, then the " leak" might be an old stain ? If there is gas leaking out, then the pressure will drop to zero and you will not have cool air or cold lines...
If the lines are cold and the air inside the cab is hot, then you possibly have a blend door problem. The broken door or controller will allow the air to go thru the heater core and get hot instead of going thru the cooling coil to get cool... The blend door has absolutely nothing to do with a gas ( Freon) leak in the core.
The vacuum hoses control the direction the air flows... to the dash, floor, or defrost.. they do not control the temp. You may have a vacuum hose that shuts off a valve in the heater hose when the AC is engaged.
If the lines are cold and the air inside the cab is hot, then you possibly have a blend door problem. The broken door or controller will allow the air to go thru the heater core and get hot instead of going thru the cooling coil to get cool... The blend door has absolutely nothing to do with a gas ( Freon) leak in the core.
The vacuum hoses control the direction the air flows... to the dash, floor, or defrost.. they do not control the temp. You may have a vacuum hose that shuts off a valve in the heater hose when the AC is engaged.
Hotshot
Joined: Jul 2005
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the actuator is not hard to get off........... getting into the duct to do the blend door or shaft is a little harder....... Make sure the actuator gear box is actually working under load... hold the shaft whey you energize it to operator......... also look at the shaft on the blend door... do you see it snapped off or twisted ?
There are "alternate fixes" and patches for the blend door drive / shaft. Might be a good idea for a 20 year old truck....... you cut a hole in the duct, fix the insides, then screw or duct tape or RTV the cover plate back into position... There are posts on how to do this........ see you-tube.
There are "alternate fixes" and patches for the blend door drive / shaft. Might be a good idea for a 20 year old truck....... you cut a hole in the duct, fix the insides, then screw or duct tape or RTV the cover plate back into position... There are posts on how to do this........ see you-tube.
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the actuator is not hard to get off........... getting into the duct to do the blend door or shaft is a little harder....... Make sure the actuator gear box is actually working under load... hold the shaft whey you energize it to operator......... also look at the shaft on the blend door... do you see it snapped off or twisted ?
There are "alternate fixes" and patches for the blend door drive / shaft. Might be a good idea for a 20 year old truck....... you cut a hole in the duct, fix the insides, then screw or duct tape or RTV the cover plate back into position... There are posts on how to do this........ see you-tube.
There are "alternate fixes" and patches for the blend door drive / shaft. Might be a good idea for a 20 year old truck....... you cut a hole in the duct, fix the insides, then screw or duct tape or RTV the cover plate back into position... There are posts on how to do this........ see you-tube.
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Hotshot
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Hotshot
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that was my point... dash removal takes HOURS... you can remove the glove box and cut a hole in the duct and "patch" the door drive several different methods in 30 minutes. ......... Its not factory original, but would save you a lot of time and grief.
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just in case i decide to sell the car in running condition, i'd like to have the AC/heat work properly, even it means spending a Saturday doing a PITA job properly. If i cant get the dash out then I'll do the easy fix
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