Need fan help....
Thread Starter
Racer
Joined: May 2000
Posts: 372
Likes: 0
From: Deatsville, Al
Need fan help....
It appears that I am having a problem with my fan coming on. If I understand this correct, the fans will come on:
1. when the temp gets to 228.
2. when the ac is on.
Is this correct?
The fan is coming on when the ac is on, but not when the car hits 228.
Where do I start looking?
Thanks.
1. when the temp gets to 228.
2. when the ac is on.
Is this correct?
The fan is coming on when the ac is on, but not when the car hits 228.
Where do I start looking?
Thanks.
Melting Slicks
Joined: Apr 2001
Posts: 2,120
Likes: 222
From: Ca.
Re: Need fan help.... (Newbie85)
It appears that I am having a problem with my fan coming on. If I understand this correct, the fans will come on:
1. when the temp gets to 228.
2. when the ac is on.
Is this correct?
The fan is coming on when the ac is on, but not when the car hits 228.
Where do I start looking?
Thanks.
1. when the temp gets to 228.
2. when the ac is on.
Is this correct?
The fan is coming on when the ac is on, but not when the car hits 228.
Where do I start looking?
Thanks.
So it's doing what it's supposed to-don't worry about it....
Thread Starter
Racer
Joined: May 2000
Posts: 372
Likes: 0
From: Deatsville, Al
Re: Need fan help.... (drive it)
The fan on with ac on is dependant on ac press-so the fan can come on way before 228 coolant temp just based on increased ac press.
So it's doing what it's supposed to-don't worry about it....
So it's doing what it's supposed to-don't worry about it....
Thanks
Le Mans Master
Joined: Jul 2002
Posts: 5,818
Likes: 2
From: Alive and well in Burlington NC
Re: Need fan help.... (Newbie85)
With the AC off, your fan should come on at 228 or so. If it's not, first check the fan. See that it moves freely and isn't bound up. I think you could run a 12volt source to fan to see if it spins. Next check the fan relay. Someone else might be able to tell you how to test it, I would just use my spare relay (I keep one "just in case". That should be a start.
Thread Starter
Racer
Joined: May 2000
Posts: 372
Likes: 0
From: Deatsville, Al
Re: Need fan help.... (Steel Blue 91)
With the AC off, your fan should come on at 228 or so. If it's not, first check the fan. See that it moves freely and isn't bound up. I think you could run a 12volt source to fan to see if it spins. Next check the fan relay. Someone else might be able to tell you how to test it, I would just use my spare relay (I keep one "just in case". That should be a start.
Le Mans Master
Joined: Feb 1999
Posts: 5,381
Likes: 0
From: Pineville, Louisiana
Re: Need fan help.... (Newbie85)
The computer tells the primary fan to come on at 228 degrees if the a/c isn't on. If not, could the computer been changed to a different temp? I don't see this happening because most reset the computers to tell the fans to come on much earlier. The secondary fan is set to come on at 237 degrees also, so they you should have 2 fans running.
Thread Starter
Racer
Joined: May 2000
Posts: 372
Likes: 0
From: Deatsville, Al
Re: Need fan help.... (CowboyNVette)
The computer tells the primary fan to come on at 228 degrees if the a/c isn't on. If not, could the computer been changed to a different temp? I don't see this happening because most reset the computers to tell the fans to come on much earlier. The secondary fan is set to come on at 237 degrees also, so they you should have 2 fans running.
Is this normal? If not, what should I look at?
Thanks.
Melting Slicks
Joined: Apr 2001
Posts: 2,120
Likes: 222
From: Ca.
Re: Need fan help.... (Newbie85)
Sorry, I misunderstood the fan functioning! Sounded like it did come on at 228, plus below 228 with the ac on....
Anyway-there are two different sensors for the dash and the pcm-one of them is not accurate....when he scanned it, it was reading the sensor for the pcm, not the dash. For peace of mind I'd change them both.
Anyway-there are two different sensors for the dash and the pcm-one of them is not accurate....when he scanned it, it was reading the sensor for the pcm, not the dash. For peace of mind I'd change them both.
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Le Mans Master
Joined: Feb 1999
Posts: 5,381
Likes: 0
From: Pineville, Louisiana
Re: Need fan help.... (drive it)
I agree, you need to change both sensors, which is not expensive. This will give you peace of mind and have both sensors reading the same. Let us know the outcome.... :smash:
