Electric Fans

[HUMMERcustoms.com/TAZ]

I have been running a 160 t-stat for a long time. Got from LPE as at the time they were the only ones that had any last summer. Called Hypertech and they said no not till winter. KenP told Me about LPE. It has been 100 to 105 and no problems with cooling. It stays down around 180 most of the time with supercharger and without SC in winter and in summer. That is what t-stat does is level the temp. In far north i may think about closing off part of radiator for less cooling but, have not talked to anyone that has done it up north. In a stock situation you can have a problem with combustion because of cylinders being more different temp from front to rear but, in forced induction you do not have that problem as much, the cooler eveything is the less chance of detonation which could be the reverse problem in stock if to far north. But, can be handled like a trucker with simple block on radiator to warm it up some. Just ideas to help with different thoughts. Have no problem with winter as the dealer said it would be but, that is what the factory says and I showed them it was Ok as LPE said it would be Ok and now dealer tells anyone go for it and they will even install. T-stat is going to hold the water till it gets hot enough and the supercharger will run some cooler in winter but, normally it is going to run 200 to 230 tops in temp range Magnuson told me. Klaus or HGW may be able to shed more light on that though. KENP runs 160 degree that LPE installed with His total setup. Last I talked to HGW He said go with 160 so these guys are who have given most of the advice on forced induction along with Klaus so I would not worry to much. If You will notice Your rig will have alot more power in the winter with all that cool air coming in even the stock intake. It is even better with cooler temp. I can feel the difference in the Silverado as in the winter with all the after market perf. it will burn the tires more than in the summer and it has run 160 for well since new along with electric fan and perf. upgrades. H2 did the same thing during the winter before SC. I could feel a big difference in the pants with the power and the aftermarket perf. stuff on and no SC. Heat is the enemy of most all mechanical equip. lower it and stuff lasts longer. That is why We have tranny cooler and engine oil cooler up front to get rid of the heat.

Anyone even stock that will put on an OEM electric fan will wonder why Hummer does not do it from factory like the Escalade or I should say they are doing. Escalade kept having cooling problems with AC not working well and the shop fix was told to add the 2500 OEM electric fan and problem solved. i went in to my dealer and told it is normal and I know enough about AC to know it was not. So since i was doing the supercharger later I went ahead and did the fan change and t-stat change and loved it all before SC ever got put on it and that was last summer. Went back into dealer not long ago for something and the service manager noticed the change and mentioned to me that Escalade had to do that to solve AC. I did not say anything. AC was like night and day with the increased flow and radiator appreciated it allot as well since the condenser was running cooler and not dragging it's hot air through the radiator. Many things can be improved with few changes. I was thinking of adding a rear AC system but, I'm spending that money on more bling instead. Fan is a simple adjustment. Do not see much difference in cost. Assembly will take a little longer at factory. Oh well.

Phil I got a huge cresent and a big hammer and off it came with one whack. They are not on but by hand since they run in reverse they stay tight. I even on My Silverado had trouble with My flex-a-lite because of the poor controller setup until they finally redesigned it to work right that i greased MY manual fan so i could almost take it off by hand so I could put it back on when the flex-a-lite gave me trouble. I just had to bump it is all. did not remove electric just stuck mechanical on ran cool till I got home and had no clearance problem. Carried the mechanical under the rear seat for a year before i trusted the flex.

Also before You put money into the flex-a-lite which i run on My 99 Silverado and love it even with the probe stuck in the radiator, check the cost of the OEM from the mentioned website in post above. You will find the fan or it was when i bought mine was half the cost of flex-a-lite. I gave I think $200.00 for it. The harness from Nelson at the time still did not bring it up to just the cost of the flex fan. So You may want to check up on it. Usually like to run OEM if possible where it fits need. Dealer liked the idea of seeing the OEM and said it would not affect My warranty at all it is GM. Has been a while since I went through the cost so it could be different but, worth the look. If it got more popular the cost may have went up but, partsguy may be able to help there.
You off road You, add switch or You will be stranded after fording water. I think with the OEM You would not have a problem but, it is cheap and just good sense to be safe and not push one's luck. Cut it off for the water just remember to turn it on. I do not know how it could be done but, would think someone could put a timer in the system that alerted the driver to turn fan on after so many seconds or may have a minute. Could run a light or a buzzer. Thought it may be a good idea as Ken has mentioned to people to remember to turn it on like it is easy to forget.
Well know I threw a buck shot load of stuff out but, trying to help steer where I have the experience and seen the good and the bad.

TAZ