87 Fiero AC stays on (Page 2/3)
Patrick OCT 06, 09:40 PM

quote
Originally posted by svocal:

How do I disconnect the blower motor?



Open the hood... and you're looking right at the blower!

svocal OCT 06, 11:54 PM
Issue resolved.
Thanks to olejoedad and patrick for the suggestions.
Found that the radiator fan and poorly insulated cabin was the culprit. The radiator fan was blowing air into the cabin.
I disconnected the radiator fan to find the issue.
However....I do hear a low fan noise in the engine compartment when the key is on but engine is off.
Amy ideas?
Patrick OCT 07, 12:19 AM

quote
Originally posted by svocal:

I disconnected the radiator fan to find the issue.
However....I do hear a low fan noise in the engine compartment when the key is on but engine is off.



This is why it's helpful to supply a few details about your Fiero. Yes, it's an '87... but what engine does it have? I'll have to assume it's a 2.8 V6... in which case you must be hearing the trunk blower. It's on the same circuit as your rad fan. You'll need to determine why that circuit is live when the engine is cold. Detach the single wire from the fan switch on the engine and see if the trunk blower stops.
msweldon OCT 07, 02:19 PM

quote
Originally posted by Patrick:

This is why it's helpful to supply a few details about your Fiero. Yes, it's an '87... but what engine does it have? I'll have to assume it's a 2.8 V6... in which case you must be hearing the trunk blower. It's on the same circuit as your rad fan. You'll need to determine why that circuit is live when the engine is cold. Detach the single wire from the fan switch on the engine and see if the trunk blower stops.



Patrick, correct me if I'm wrong but 87 2.8's did not have a blower fan in the trunk, only the 86, and maybe prior. My 87 GT did not have a blower fan but the 86 GT did..

Patrick OCT 07, 02:31 PM

quote
Originally posted by msweldon:

Patrick, correct me if I'm wrong...



Okay... you're wrong.

88's were the only year that 2.8 Fieros didn't come from the factory with a trunk blower.


quote
Originally posted by msweldon:

My 87 GT did not have a blower fan...



If it was indeed an '87 with a 2.8, then either the trunk blower (and associated ductwork) was removed... or your GT started life as a 4-banger.

[This message has been edited by Patrick (edited 10-07-2019).]

David Hambleton OCT 07, 10:13 PM

quote
Originally posted by svocal:
The radiator fan was blowing air into the cabin.


I'm confused. How could that happen? The front trunk is in the way.

svocal OCT 07, 11:41 PM
Apparently the trunk as modified which explained a few items.


quote
Originally posted by David Hambleton:

I'm confused. How could that happen? The front trunk is in the way.



msweldon OCT 08, 08:25 PM
Patrick,

I stand corrected... I pulled the engine, front crossmember, and refreshed entire suspension on my old 87GT and never pulled back the trunk carpet to notice the fan... Just looked up the fan...87 2.8's had them indeed....
Patrick OCT 08, 08:33 PM

quote
Originally posted by msweldon:

...never pulled back the trunk carpet to notice the fan



Okay... but you never noticed the blower tubes?

da.slyboy OCT 09, 12:09 PM

quote
Originally posted by svocal:


Found that the radiator fan and poorly insulated cabin was the culprit. The radiator fan was blowing air into the cabin.
I disconnected the radiator fan to find the issue.




I think it would be interesting to post of picture of your front trunk area as I'm really confused on how the rad fan was blowing a very noticeable amount of cold air into the main cabin. Also wouldn't it start being warm air when the engine got to temp?