Electric Fans Load Engine - 2003-04 Mach 1 Registry Owners Club

lonestarbullitt · 07-22-2014, 01:29 PM

Whenever my fans turn on, they seem to bog down the engine. My RPMs probably drop to about 400-500 for a second whenever they kick on and then recovers to 800. Is this fairly normal or happen with anyone else? I don't recall it ever doing that when I had the original SOHC motor in the car.

bris09 · 07-25-2014, 05:40 PM

There will be a dip because they put a load on the electrical system. Yours seems high though. Maybe one of the motors is pulling high amperage when it starts. I'd start by measuring the current (amperage) of both fans to see if this is the case.

PM me if you are not sure how to do this.

07-22-2014, 01:29 PM	#1
lonestarbullitt Registered User Join Date: Aug 2011 Location: Helotes, TX Posts: 179	Electric Fans Load Engine Whenever my fans turn on, they seem to bog down the engine. My RPMs probably drop to about 400-500 for a second whenever they kick on and then recovers to 800. Is this fairly normal or happen with anyone else? I don't recall it ever doing that when I had the original SOHC motor in the car.

07-25-2014, 05:40 PM	#2
bris09 Registered User Join Date: Oct 2004 Location: Middletown, PA Posts: 3,991	Re: Electric Fans Load Engine There will be a dip because they put a load on the electrical system. Yours seems high though. Maybe one of the motors is pulling high amperage when it starts. I'd start by measuring the current (amperage) of both fans to see if this is the case. PM me if you are not sure how to do this. __________________ Brian 04 Azure Mach 1 Mods: Enough to not be the slowest, but nowhere near enough to be the fastest. 17 Fusion Sport Now faster than the Mach 96 Laser Red Cobra Vert For those days you just wanna cruise with the top down 89 Shelby CSX Still rocking the VNT and Fiberides.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)