venomsE55

thought the pump was bad so before i removed it i thought i would make sure it has power and its not getting power, where is the fuse or where should i look first?

SavMan

Did you engage the pump with Star first before checking the voltage?

If you don't have Star take the car for a drive then give it a short blast to engage the SC Clutch, the voltage will then be live pull over but don't stop the engine and check the voltage again.

venomsE55

i have the eurocharge tune, they said it should come right on when you start the car.

SavMan

I don't have access to WIS today but check the Rear Sam layout

1970gsx

I have an EC tune also and have to goose the throttle to have my pump come on. I'm in Delran and have an extra pump you can try if needed.

JoeNobody

Not all EC tunes have pump energized at all times, As it's a more recent feature.

venomsE55

im going to look into it a little more today when i get home from work, i installed the johnson pump last night, i was just at eurocharged for there open house and jerry said the pump should come on as soon as i start the car. i have lived in delran my whole life, how have i never seen your car?

biggking

Check the rear sam, 4th fuse from the bottom..

Baronet1

Is that the fuse for the IC pump? To run it constantly?

jnash

The relay for this SC pump on a E55 I believe is the lowest one in the bank of relays in the trunk on the drivers side. There are 4 pins, one at each quadrant. short the pins at are labeled 87 and 87 a. Pin 30 is 12 volts to energize the relay and pin 85 is ground.
Location needs to be confirmed as I'm only 95% sure its the lowest one.
Whenever you think the pump should be on, connect an amp meter to to pins 87 and 87a with the relay removed and the pump will come on and measure the current on amps and report back.

Baronet1

I want to have the pump run constantly and never shut off..

venomsE55

Fuse is good.

biggking

relay also on the rear sam.. 1st one on the bottom.

venomsE55

the relay is good, i switched it with a known good one. do you thing the flash could have something to do with it? i dont know if it was or wasnt working, we found out it wasnt only after we put it on the dyno right after flashing it. i dont know where else to look. and when does the oil cooler fan come on cause i had the car running for a while and never saw it come on.