blend door actuator 1990
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From: essex
blend door actuator 1990
Hi
I hope some one on here will be able to tell me or even better have a photo of where the blend door actuator is on my 1990 the FSM doesn't
tell you from what a have read my c4 was made in 1989 registered 1990 right on the change over if that helps
I hope some one on here will be able to tell me or even better have a photo of where the blend door actuator is on my 1990 the FSM doesn't
tell you from what a have read my c4 was made in 1989 registered 1990 right on the change over if that helps
Last edited by Gary Bagley; Nov 16, 2017 at 03:05 PM. Reason: added year car built
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From: essex
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On the 1990 the ECM is under the hood on the drivers side. I believe the actuator is on top of the evaporator air box on the passenger side. You may have to take the dash apart to reach it.
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From: Delanson New York
I think I am going to replace the entire heater core box if I can do it without discharging the AC.
Good luck
Last edited by jrd1990zr1; Nov 17, 2017 at 08:56 PM.
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From: essex
heater core box
1990 FSM doesn't address it. I am trying to replace the actuator, terrible job. I have a post on here with photos. He is a couple. It is above all the wires and the air distribution duct, under the frame for the window.
I think I am going to replace the entire heater core box if I can do it without discharging the AC.
Good luck
I think I am going to replace the entire heater core box if I can do it without discharging the AC.
Good luck
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Joined: Jan 2006
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From: Delanson New York
Without the inspection scope you will need to drill out the 2 aluminum rivets and remove the muffler assembly. I've removed most of the right dash and there are three screws which hold the actuator to the heater core box. I got one out, still working on the other two. Second photo shows the heater core box looking down, muffler assembly and the 3 attachment locations for the blend door motor.
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From: essex
Heater/AC Problem (blend door
This is what you should see with the glove box out. Picture 1. The plastic piece with the 2-1/4" black pop rivets is the muffler assembly which runs out to the in cabin temp sensor in the middle of the two air outlets. If you have a fiber optic inspection device you can see the blend door actuator behind the muffler.
Without the inspection scope you will need to drill out the 2 aluminum rivets and remove the muffler assembly. I've removed most of the right dash and there are three screws which hold the actuator to the heater core box. I got one out, still working on the other two. Second photo shows the heater core box looking down, muffler assembly and the 3 attachment locations for the blend door motor.
Without the inspection scope you will need to drill out the 2 aluminum rivets and remove the muffler assembly. I've removed most of the right dash and there are three screws which hold the actuator to the heater core box. I got one out, still working on the other two. Second photo shows the heater core box looking down, muffler assembly and the 3 attachment locations for the blend door motor.
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From: Delanson New York
I have read the about drilling for the actuator back bolt(s). There are 2 not one. Is you photo in the area where the arm mechanism is or the outer shell. Under the inner wall, as far as I can tell the sound mat is the only thing on the other side. I was a bit concerned about the accuracy of the dimensions so I decided not to drill the holes.
Good luck.
Last edited by jrd1990zr1; Nov 19, 2017 at 10:27 AM.
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From: essex
panel
Yes, you should be able to follow the wire down to it.
I have read the about drilling for the actuator back bolt(s). There are 2 not one. Is you photo in the area where the arm mechanism is or the outer shell. Under the inner wall, as far as I can tell the sound mat is the only thing on the other side. I was a bit concerned about the accuracy of the dimensions so I decided not to drill the holes.
Good luck.
I have read the about drilling for the actuator back bolt(s). There are 2 not one. Is you photo in the area where the arm mechanism is or the outer shell. Under the inner wall, as far as I can tell the sound mat is the only thing on the other side. I was a bit concerned about the accuracy of the dimensions so I decided not to drill the holes.
Good luck.
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From: Delanson New York
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Joined: Jan 2006
Posts: 571
Likes: 29
From: Delanson New York
1990 Blend door actuator
Finally got my heater box out. I misspoke there are only 2-7mm screws holding it in (see red arrows in attached photo) The third (blue arrow) is just a peg.
Sorry for the confusion.
Sorry for the confusion.