May-04-2018 03:17 PM
May-21-2018 10:32 PM
May-16-2018 01:37 PM
dougrainer wrote:
The fan should be connected to a Trinary switch connected to the DASH AC system pressure hoses. Once the Dash AC pressure reaches a certain pressure, the Fan relay closes and runs the fan. Being 2o years old points to a bad fan also. I would disconnect the quick connect on top the fan and jump 12 volts pos and neg to the fan to see if it actually runs. Then start your diag if it DOES run. Doug
May-13-2018 05:16 AM
May-12-2018 04:12 AM
May-06-2018 12:31 AM
dougrainer wrote:
The fan should be connected to a Trinary switch connected to the DASH AC system pressure hoses. Once the Dash AC pressure reaches a certain pressure, the Fan relay closes and runs the fan. Being 2o years old points to a bad fan also. I would disconnect the quick connect on top the fan and jump 12 volts pos and neg to the fan to see if it actually runs. Then start your diag if it DOES run. Doug
May-05-2018 04:15 PM
May-05-2018 07:17 AM
77rollalong wrote:udidwht wrote:
I have a 1994 Fleetwood Southwind Storm 28ft with a 454 TBI (4L80E) and I'd like to confirm the fan (1) that is mounted on the front of the A/C condenser is working or or not. I don't recall ever seeing it on.
I've heard conflicting ideas of when it actually comes on such as...
Will come on when A/C and engine temp is roughly 220 or so.
Will come on anytime the A/C is on regardless of engine temp. (Haven't seen this myself).
So which is it? And what would be the easiest method of ensuring the fan is working correctly. I know it's tied into the PCM and the passenger side sensor (cylinder head) and possibly the A/C pressure switch.
Picture of my fan...
https://www.dropbox.com/s/oilh4kcssl2dkcn/IMG_0411%5B1%5D.JPG?dl=0
1994 Fleetwood Southwind Storm Chevy P-30 28ft 4L80E 454TBI
VIN#1GBJP37N4R3314754
56,139 US miles
you are correct, it should come on when the AC is turned on independent of the engine temp, you may have a 2 speed fan as well, check the fuse box under the hood, and see if there is 2 coolant fan relays in the box, i had a test relay that had a switch so i could just remove a relay, and plug in a test relay and turn on and off what ever i need to , there should be a fan Fuse also in the same fuse box...
May-05-2018 05:09 AM
udidwht wrote:
I have a 1994 Fleetwood Southwind Storm 28ft with a 454 TBI (4L80E) and I'd like to confirm the fan (1) that is mounted on the front of the A/C condenser is working or or not. I don't recall ever seeing it on.
I've heard conflicting ideas of when it actually comes on such as...
Will come on when A/C and engine temp is roughly 220 or so.
Will come on anytime the A/C is on regardless of engine temp. (Haven't seen this myself).
So which is it? And what would be the easiest method of ensuring the fan is working correctly. I know it's tied into the PCM and the passenger side sensor (cylinder head) and possibly the A/C pressure switch.
Picture of my fan...
https://www.dropbox.com/s/oilh4kcssl2dkcn/IMG_0411%5B1%5D.JPG?dl=0
1994 Fleetwood Southwind Storm Chevy P-30 28ft 4L80E 454TBI
VIN#1GBJP37N4R3314754
56,139 US miles
May-04-2018 06:37 PM