electric fan question, yes I searched first
#2
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Yes.
You will need to add a pin to the PCM connector and have your tuner switch it on at your desired temps.
If you want to use the twin LS1/LT1 fan setup you will need to buy or make a three relay switch if you want a high-low fan
You can buy the relay setup along with the pin/wire to put in the PCM from Nelson Performance in Texas or make your own from numerous schematics posted on this website.
You will need to add a pin to the PCM connector and have your tuner switch it on at your desired temps.
If you want to use the twin LS1/LT1 fan setup you will need to buy or make a three relay switch if you want a high-low fan
You can buy the relay setup along with the pin/wire to put in the PCM from Nelson Performance in Texas or make your own from numerous schematics posted on this website.
#3
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Thank you I have seen the three relay diagrams and the offerings from the tuners. I was just wondering if the PCM would allow it on an earlier vehicle. I am going to try and keep the stock clutch fan (trying to save a little now) but would like to have the harness wired for fans in case I need or want it in the future. I would assume that I could have it wired and programmed and that should not cause any issues if there are no fans attached.
Trying to get all m,y questions answered and parts ordered so I don't have many I should have thought of that moments.
Thanks for the help
Trying to get all m,y questions answered and parts ordered so I don't have many I should have thought of that moments.
Thanks for the help
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Just asking. If there are good reasons to immediately go electric I will. I plan on wiring for it for future electric fans but I am already blowing my budget as it is (as expected).
Thanks
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I am hoping it would work. I am moving my engine forward anout 1 3/4 inches so I don't have to move my transfer case, shifter, or alter my driveshafts which are only a year old. I still think I will be OK but wanted to have the harness fan ready in case something doesn't work or I want to change for some reason later. I just think it is easier in the long run to have the harness wired for fans and not need it than to have a need later and have to rework the wiring again.
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#8
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When I sent my computer in, I had a fan control added. I'm also using the stock mechanical fan that came on my 02 LQ9. This is in a 68 vette which were known to have cooloing problems. I wired it so the computer can provide a ground for the fan relay, or a trinary switch from the AC can provide the ground.
If you want to skip the computer reprogramming, or already have had it done, just buy a temp switch from summit and screw it in the passenger side head boss.
If you want to skip the computer reprogramming, or already have had it done, just buy a temp switch from summit and screw it in the passenger side head boss.
Last edited by garys 68; 11-15-2009 at 01:55 PM.
#9
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You asked if your PCM could be modified to include a provision for an electric fan, then mentioned that you wanted to save some coin keeping the clutch fan. I was only offering that the taurus fan is a cheap alternative to the spendy aftermarket fans - one that is more than adequate for your cooling needs. That being said, there is no need to run an electric if the stock clutch fan will work. Personally, I don't have the room to run a mech fan, so my decision was pretty easy. Plus I think clutch fans are unsightly.
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You asked if your PCM could be modified to include a provision for an electric fan, then mentioned that you wanted to save some coin keeping the clutch fan. I was only offering that the taurus fan is a cheap alternative to the spendy aftermarket fans - one that is more than adequate for your cooling needs. That being said, there is no need to run an electric if the stock clutch fan will work. Personally, I don't have the room to run a mech fan, so my decision was pretty easy. Plus I think clutch fans are unsightly.
Thanks for the input
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I dont think that you will need to add the wire. The wire is probly already there for what the truck ECM uses to control the recirc damper in the HVAC system. The ECM just needs to be reprogrammed to understand that its controlling a fan, not a recirc damper. If you send your harness to John at Speartech, make sure to be clear and ask for 2 fan control like an F Body. John does great work and will answer you questions if you call him and ask for advice.
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I am putting a 5.3L in my 68 C-10. I used an LS1 F-body e-fan setup.
I'm using a 2004 ECM and had to add the signal wire to the ECM and I'm working on the rest of the wiring....hope to have it running by thanksgiving weekend.
I'm using a 2004 ECM and had to add the signal wire to the ECM and I'm working on the rest of the wiring....hope to have it running by thanksgiving weekend.