![]() ![]() This is the first time I have ever worked with relays, but I am a quick study. They include the following diagram for the relay wiring (sorry I didn’t know about this early): View attachment 397165 Still a success since it won’t drain my battery, but clearly not operating as intended to be switched on and off by the EFI.ĭid some research and found the FiTech install instructions online. Turned the engine off and the fan stopped. My thought here was if it got to 190 and the fan turned off, they perhaps it was just a crossed wire at the relay. I let it idle for awhile, got up to 200 with the fan still running. I set the fan on temp at 190 and the fan off temp at 175. Again, not a fail because the fan is only running when the engine is on. Not when key is on, but when the engine is running. The issue I am having is the fan comes on as soon as the engine is fired up. Installed relay to the starter relay (all those wires get concealed behind the washer bottle): View attachment 397164 ![]() Wired relay based on the description above: View attachment 397163įan secured to the radiator: View attachment 397162 Wiring up the relay to the fuse: View attachment 397161 I am chalking up today’s work as a success on this fan project, but have run into an issue that will still need some diagnosing (and probably a bigger fan). What year vehicle is this and which engine? You will also need to block the heat riser in the open position by tying it down or better yet just remove it. If you installed the EFI yourself, that is probably the source of the excessive heat if the heat riser passage is not blocked. There is an after market intake gasket that blocks the heat riser ports as the heat riser passage is not needed with EFI. Check you instructions, most of the time a heat riser is not needed with EFI. This will cook the EFI unit electronics for this type of EFI or cause it to shut down. If the valve is stuck shut, exhaust is diverted thru the heat riser passage under the carb or in this case EFI. ![]() As the engine warms up, the spring weakens and that valve opens. The valve has a thermal spring that closes the valve on a drop in temperature when the engine is cold. Usually on the passenger side exhaust manifold there will be a flapper valve where the manifold meets the exhaust pipe. ![]()
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