How long will the Johnson pump will last if you run it whenever the engine runs?

Thanks,

 

4 Years

 

Thank you! will have my run full cycle now lol

 

I think my estimate is low, but I think 4 years is a very safe bet

• The stock Bosch pumps started showing issues around 5 years when wired in normally. The Johnson should have a little longer life.
• By not cycling, I would assume the pump would run 20% more.
• If the Johnson is 15% better than the Bosch, you would start with 5.75 years
• If the pump is running 20% more, this would bring you to 4.6 years.

All figures were made up in my head, so probably very accurate.


I run mine all the time too:


Ran positive wire (fused at battery) through car to passenger foot wel. There I installed a 30A relay. I tapped into the cigarette lighter hot wire which switches with ignition.

That switched power triggers the relay, which in turn powers the pump via the lead I pulled from trunk. Pump ground is local to the pump.


Relay Wiring:

R-2 Intercooler Relay
30*– + out to pump
85 – Ground
86 – Ignition Switched Power (Cig Lighter)

87* – Power from Battery (Fused at battery)



When 86 gets power, it closes 30 to 87. Whala, Pump runs. If this is your area of expertise I apologize, just wanted to share