IC Pump Issues

1

1slownotch

New member
Well, I just got done with my first round of mods and I can't seem to figure out why my IC pump will not power on. I have put the truck into diagnostic mode and the pump will still not run. I've checked the fuse, changed the relay, and drove the truck until it should have came on and still nothing. I did jumper the yellow ground to the chassis ground while the truck is in diagnostic mode and the pump runs, so I am fairly certain that it is not wiring. I am at a loss of why the ECM is not telling the pump to come on, but I am willing to listen to any thoughts you might have. Thanks in advance.:tup:
 
5678TA

5678TA

New member
Re: IC Pump Issues

If it works, just hotwire it. It will only help performance. That way, you dont need to worry why its not turning on...
 
1

1slownotch

New member
Re: IC Pump Issues

It is setup to come on at 100F, but it is still not working even after it comes to temperature..
 
1

1slownotch

New member
Re: IC Pump Issues

5678TA said:
If it works, just hotwire it. It will only help performance. That way, you dont need to worry why its not turning on...
Click to expand...

That is the direction I am leaning towards right now, it just bothers me that I can't figure out why it is not running..
 
wildphil

wildphil

I Love My Ty's
Re: IC Pump Issues

Have you tried to hook power directly to the pump to see if it will run at all? It could be a defective pump.
 
sytyguy

sytyguy

Moderated User
Re: IC Pump Issues

What chip do you have? The stock chip didn't cut the IC pump on @ 100 degF, so if you're running a chip that has modified IC cut-on values, then it's possible a conditional constant is retaining an old setting. If you dump the bin, look for an 84.5 between 0x00AE - 0x00B4. If found, drop all 84.5s & 45.5s to 19.2. In fact just set 0x00AE - 0x00B6 to 19.2 (excluding mph constants)
 
1

1slownotch

New member
Re: IC Pump Issues

sytyguy said:
What chip do you have? The stock chip didn't cut the IC pump on @ 100 degF, so if you're running a chip that has modified IC cut-on values, then it's possible a conditional constant is retaining an old setting. If you dump the bin, look for an 84.5 between 0x00AE - 0x00B4. If found, drop all 84.5s & 45.5s to 19.2. In fact just set 0x00AE - 0x00B6 to 19.2 (excluding mph constants)
Click to expand...

I have a Turbo Tweak Velosyty chip and I'm not entirely understanding everything your talking about. I'm assuming the bin will be what I would find in Tuner Pro or Datamaster? I'm kinda new with some of this, so please forgive all my questions..
 
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