Quadzilla not showing boost

[Trombly]

Have a 1999 2500 Cummins 4x4 auto, installed the quadzilla adrenaline and all was working good then the boost started intermittently dropping out and now shows no boost, wondering if anyone else has run into this?

 

I did back probe the quad and the MAP sensor voltage matches what the snap on scanner is reading as well. Sent the module in already and they said everything is fine and sent it back 

 

Thanks for any help

[Me78569]

Have you replaced the map sensor? 

[Trombly]

51 minutes ago, Me78569 said:

Have you replaced the map sensor? 

Ya with a cummins sensor

 

Messed with it some more and found the quad would starting reading 1 psi when the actual psi was 16

[Me78569]

check the jumper inside the unit.  16 psi is about the offset for a late truck vs early truck map reading.

[Trombly]

11 hours ago, Me78569 said:

check the jumper inside the unit.  16 psi is about the offset for a late truck vs early truck map reading.

 

Youre awesome! That was it, here’s the link for anyone else http://quadzillapower.com/after-market-adrenaline/#Dodge1998

 

Thanks again!

[Me78569]

It's also in the top section of the Tips and Tricks article

 

 

[Trombly]

On 10/2/2018 at 8:09 AM, Me78569 said:

It's also in the top section of the Tips and Tricks article

 

 

One more for you: Did the jumper removal and now my quad will randomly drop boost, back probed everything on the MAP side and am not getting any drop out, any suggestions?

[Me78569]

Please datalog the issue so we can see what you are talking about.  

[Trombly]

11 hours ago, Me78569 said:

Please datalog the issue so we can see what you are talking about.  

Attached data log 

Thanks again

iQuad-2018-10-08-02.20.02.csv

[BBHD]

I have had this on mine as well where it seems like the MAP just loses its signal very briefly every now and then. 

[Me78569]

looking at the log it shows that boost is falling off to 0 at sub 16 psi points.   when boost is below 16 psi the quad is asking the ecm what bosot pressure is.  

 

My guess is either your map is dying or you have a bad pin in your map harness causing boost to drop out randomly.

[Trombly]

Alright so after messing with it, I redid the pump tap with the BD stealth cover and have not had problems since.  Hopefully this help someone 

Rock n roll

[Trombly]

Just kidding, it started acting up again, anyone else have this issue with 1999 cummins specifically?  Any help is appreciated, these VP44 trucks can be frustrating sometimes.

 

Thanks!

[hdpwipmonkey]

Did it just start happening again?  So it was fixed for a year?  If that's the case check your pump tap again.  Maybe it worked lose again.

[Mopar1973Man]

Like myself the ground wire came loose. The bolt I used on the hood hinge worked loose from all the vibration of washboard roads and loosened up and created all kinds of hell when the Quadzilla losing power. I part I missed on mine at least I was check +12V power but forgot the grounds.