Is there any reason to keep the injector blower? I read that it's really just dead weight and possible fire hazard. After 89 they got rid of it anyhow right?

 

I took mine out.. I kept reading stories a about fires...I think the better idea guys put it in there to prevent vapor lock. But I haven't had a single problem without it. I have good pumps too though...

 

Anyone here remove/disable it and run into problems?

 

I don't see any reason to remove it.

 

No vehicle manufacturer puts ANYTHING on them that does not serve a purpose, at least not knowingly. The 'problem' with fuel systems that return to the fuel tank is the fuel rail is bolted to the hot intake manifold. As the fuel pressure regulator bypasses fuel that is not used by the injectors, it absorbs the heat from the intake manifold and surrounding ambient air and continuously carries it to the fuel tank, gradually increasing the tank fuel temperature during operating engine temps.

The reason why I say 'problem' is because returnless fuel systems solve this issue by Pulse Width Modulating (PWM) the fuel pump to only deliver as much fuel that is required by the engine, maintaining reduced tank fuel temperatures.

 

That fan only comes on after the truck has been shut down.

 

Heat soak after turning off the engine is the hottest it will ever get, hence why the fan only comes on after turning off the engine to allow vehicle to be restarted 0-30 minutes after shut down, reducing vapor lock in the fuel rail.

So if the injector blower is removed, you may have a no start condition soon after shutting it down. Leave it be, FoMoCo wouldn't be cutting their profit margins for something that isn't required.

 

Two different things said here. #2 would be correct.

 

Definitely interesting discussion. I saved mine in case I ever needed to clean it up and put it back. I have driven my truck for hours shut it off for 20-30 minutes and then restarted with no issues. I am not a big advocate of removing systems engineers designed to help the truck to operate in a more reliable way. However, I am sure I read threads either here or on other forums where guys experienced overheating and wire meltdown caused by the fan itself. Most likely a result of the fan drawing to many amps and exceeding the wire rating for the fan. This is a result of a fan failing. My fan didn't look to healthy, I opted not to replace it after reading about other guys deleting it with no issues.

 

The hot soak issue is the problem. When fuel injection was new injectors would leave fuel in the intake manifold after the engine shut down. The fuel boils in the intake and fuel rail and causes vapor lock. This problem is compounded with the bank fire system on early EFI which dumps fuel on closed valves etc. The boiling fuel and vapors won't catch fire (under normal circumstances ) because they are contained within the intake. The sealed pcv helps contain vapors that escape past the valves. The blowers work just like later model electric fans and kept in good condition should be no more fire risk than the rest of the electrical system. The fuseable link burns with any overload. On new vehicles the sequential EFI help reduce the situation and the returnless ( on demand ) fuel supply eliminates it by supplying only the fuel needed and the line pressurized raising boiling and vaporization temps.