EATC o-ring repair - How to... with pics.

[Windsor58]

I did my o-rings a while back. Air was just coming out of the defroster vent all the time. I did find at least one bad o-ring. But when I put it back together, it still has the same problem. I went digging today and I think what I did was pulled the vacuum lines a little too hard when I was pulling the EATC out of the dash and I pulled loose something that looks like a plug with the vacuum lines going through it, with some foam around the outside of the plug as if it is supposed to be plugged into a hole. But I can't reach where it came from. I also can't even see because I can't bend my back enough. Been looking through the forums but can't find a picture of what I am talking about... I may have to go pay the dealer more money, again...

[fastblackmerc]

I did my o-rings a while back. Air was just coming out of the defroster vent all the time. I did find at least one bad o-ring. But when I put it back together, it still has the same problem. I went digging today and I think what I did was pulled the vacuum lines a little too hard when I was pulling the EATC out of the dash and I pulled loose something that looks like a plug with the vacuum lines going through it, with some foam around the outside of the plug as if it is supposed to be plugged into a hole. But I can't reach where it came from. I also can't even see because I can't bend my back enough. Been looking through the forums but can't find a picture of what I am talking about... I may have to go pay the dealer more money, again...

Re-check the the red connector inside the EATC. Make sure it's on the right way. Very easy to plug it in wrong or 1 pin off. The connector you are talking about is located to the left of the glove box. It's been my experience that it's very hard to disconnect unless you went "gorilla" on it when removing the EATC. You can take out the glove box to check that it is still connected. Did you take the solenoids apart or just pull the shaft out? If you took them apart you may have reinstalled the plunger(s) the wrong way. Or you may have a vacuum leak elsewhere under the dash or in the engine compartment.

[Windsor58]

Re-check the the red connector inside the EATC. Make sure it's on the right way. Very easy to plug it in wrong or 1 pin off. The connector you are talking about is located to the left of the glove box. It's been my experience that it's very hard to disconnect unless you went "gorilla" on it when removing the EATC. You can take out the glove box to check that it is still connected. Did you take the solenoids apart or just pull the shaft out? If you took them apart you may have reinstalled the plunger(s) the wrong way. Or you may have a vacuum leak elsewhere under the dash or in the engine compartment.

Thanks, FastBlackMerc. I will pull it and check that red connector. As for the solenoids, I was very careful to make sure I got them back together exactly like they came apart. And I only did one at a time. As for gorilla, I might have gone at least monkey on it...
If the conector isn't it, I will pull the glove box. I ran across a description of how to get it out while trying to find a picture of the "plug" I was worried about. That should address it one way or another. Thanks again.

[71cyclone]

This is a great post! Thank you Black Noise but , I just spent $100 bucks on EBay for a remaned one before I saw this. SHHIITT!! Guess I'll fix my old one and try to sell it to get my money back...

I think the dealer wasnt Crazy loot for this part, near 500 dolla
This fix is great/ I did mine with NaPa O rings [couldnt locate the orange ones]

[NavySeabee]

For anyone interested. I got the o-rings from here.

http://www.oringsandmore.com/servlet...ngs/Categories

$1.70 pack of fifty. 2.50 shipped arrived in 3 days.

Do you have a size and/or part number? Thx

[RF Overlord]

The size is -007.

[tallpaul]

Bad connection at the blend door motor & check fuse #23 (15 amp).

Shop manual says, Blend door short or failure. go to pin point test "A".

Where is this pin point test A?

[tallpaul]

Never mind I found it.

[burt ragio]

A big thanks to Blck Noise on your write up. I just replaced the four O rings per your directions. Two hard as a rock. After many agoneizing hours in the car windows up then down heat on then off just all because of those little FN O rings.

[NavySeabee]

The size is -007.

Are these the correct ones? Just making sure before I rip the EATC apart. I noticed you have a minus sign(-) in front of the 007.

http://www.oringsandmore.com/silicon...e-for-100-pcs/

Thanks.

[RF Overlord]

Yes, those are the correct ones.

It's not a minus sign, it's a dash...as in AS568A-007. O-rings are sized in either standard metric (cross sections are in 0.5 millimeter and inside diameters are in 1 millimeter increments) or in standard inch. The inch size is Aerospace Standard 568 published by the Society of Automotive Engineers.

[NavySeabee]

Yes, those are the correct ones.

It's not a minus sign, it's a dash...as in AS568A-007. O-rings are sized in either standard metric (cross sections are in 0.5 millimeter and inside diameters are in 1 millimeter increments) or in standard inch. The inch size is Aerospace Standard 568 published by the Society of Automotive Engineers.

Thanks. The ones I have are tiny. Difficult to tell the size from the photos since mine hasn't been taken apart yet.

[burt ragio]

If your in need of EATC O rings Private Message me your address I will send you some for the job.

[MADRODER]

Another satisfied self repair thanks to this post !! and if anyone is looking for some o-rings pm me also.

[mustang50lx]

Just plain awesome. And cost was 0 thanks to a member on here.