My auxiliary fans....drawing too much ??
#1
My auxiliary fans....drawing too much ??
Hello guys,
This post is about my 95 which comes stock with the auxiliary pusher fan placed on the right , in front of the condenser.
When that stock aux fan died, I replaced it with 2 small pusher fans using the same stock wiring harness, one fan I placed where the stock used to be (right front of condenser) and I fitted the second one to its left since there is plenty of space.
The one that replaced the stock aux was a nine inch high performance paddle SPAL fan that pushed 767 CMF and pulled 10.5 amps: A1 Electric Online Store: Spal 30102053 9" High Performance Fan (Push)
To its left I added a 09 inch low profile SPAL fan that pushes 590 CFM and pulls 6.5 amps : A1 Electric Online Store: Spal 30100381 9" Fan (Push)
So total I was drawing 16 amps.
Now I have replaced the 09 inch high performance fan with a 11 inch high performance fan, same brand. This one pushes 1363 CFM, a lot more air, but it pulls 18 amps. Almost twice as the one it replaced. A1 Electric Online Store: Spal 30102040 11" High Performance Fan (Push)
The other fan remained, So total now, I am drawing close to 30 amps. My A/C seems to like the extra airflow a lot. But now I am concerned that I am pulling too much power. I also wired the fans to come on with the compressor, so they both run with the A/C.
Question:
Is that pulling too much for the car to handle?
Does anyone know what the stock aux fan pulled?
Thanks!
This post is about my 95 which comes stock with the auxiliary pusher fan placed on the right , in front of the condenser.
When that stock aux fan died, I replaced it with 2 small pusher fans using the same stock wiring harness, one fan I placed where the stock used to be (right front of condenser) and I fitted the second one to its left since there is plenty of space.
The one that replaced the stock aux was a nine inch high performance paddle SPAL fan that pushed 767 CMF and pulled 10.5 amps: A1 Electric Online Store: Spal 30102053 9" High Performance Fan (Push)
To its left I added a 09 inch low profile SPAL fan that pushes 590 CFM and pulls 6.5 amps : A1 Electric Online Store: Spal 30100381 9" Fan (Push)
So total I was drawing 16 amps.
Now I have replaced the 09 inch high performance fan with a 11 inch high performance fan, same brand. This one pushes 1363 CFM, a lot more air, but it pulls 18 amps. Almost twice as the one it replaced. A1 Electric Online Store: Spal 30102040 11" High Performance Fan (Push)
The other fan remained, So total now, I am drawing close to 30 amps. My A/C seems to like the extra airflow a lot. But now I am concerned that I am pulling too much power. I also wired the fans to come on with the compressor, so they both run with the A/C.
Question:
Is that pulling too much for the car to handle?
Does anyone know what the stock aux fan pulled?
Thanks!
#2
If you have a 115 amp alternator, it can handle the current fine. The OEM wiring may be a bit stressed though. Just make sure the feed cable for the fans is robust enough if it is the OEM wiring. If it gets hot after 10 mins of continuous running, then that is a warning. If it is a bit iffy, you can always run a new feed cable to a new relay for the fan feed directly from the battery post on the bulkhead, and use the OEM circuit to switch on the relay.
Greg
Greg
The following users liked this post:
Spikepaga (11-03-2014)
#3
Your car has 120amp alternator, so if it isn't a hot night where you need full AC and the headlights it will be okay.
But in that case, when you are in a traffic jam it will a big load.
I suggest you re-wire the harness with more thick ones, as Greg says. I don't think the stock wire is thick enough, when it isn't you can't draw the maximum power from the fan.
But in that case, when you are in a traffic jam it will a big load.
I suggest you re-wire the harness with more thick ones, as Greg says. I don't think the stock wire is thick enough, when it isn't you can't draw the maximum power from the fan.
The following users liked this post:
Spikepaga (11-03-2014)
#4
Your car has 120amp alternator, so if it isn't a hot night where you need full AC and the headlights it will be okay.
But in that case, when you are in a traffic jam it will a big load.
I suggest you re-wire the harness with more thick ones, as Greg says. I don't think the stock wire is thick enough, when it isn't you can't draw the maximum power from the fan.
But in that case, when you are in a traffic jam it will a big load.
I suggest you re-wire the harness with more thick ones, as Greg says. I don't think the stock wire is thick enough, when it isn't you can't draw the maximum power from the fan.
What did you mean that I can't draw the maximum power from the fan?
Thanks!!
#5
I mean if the wire is too narrow, it could be a resistance and there would be a current loss.
But unless the wire doesn't get hot it would be alright
I forgot to mention, when you put a pusher electric fan in front of the mechanical puller fan, it could sometimes be a resistance of the original fan.
It is because the original fan is much stronger than most of electric fans, so electric fans can't be a help in some situations, sometimes it rather prevent the air flow.
So there might not be need to put another electric fan.
It really depends on the situation though.
But unless the wire doesn't get hot it would be alright
I forgot to mention, when you put a pusher electric fan in front of the mechanical puller fan, it could sometimes be a resistance of the original fan.
It is because the original fan is much stronger than most of electric fans, so electric fans can't be a help in some situations, sometimes it rather prevent the air flow.
So there might not be need to put another electric fan.
It really depends on the situation though.
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