Unforgiv3n

Hey guys, I am having a problem with the stock boost gauge. Do you know what fuse the boost gauge runs off of? Or where the power for the boost gauge goes through?

Unforgiv3n

bump.

Coblasts

Check the lighter fuse (Ltr) in the under the hood fuse box,Not sure if thats the one but it does power the DLC.

It is actually powered from the Wiper fuse ! Do your wipers still work ?10 amp fuse(#15) located on the bcm(passanger side fuse box)

Unforgiv3n

No, wipers do not work but the fuse is fine, I have replaced the fuse anyways but it still does not work(The windshield wiper that is. As far as the other fuses i have multi-meter tested all of them and they seem fine.

Do you know exactly which fuse the LTR on is?

I'm not sure if it is related but both cigarette lighters work.

WickedSS2005

iTrader: (1)

If both cig lighters work then the fuses for them are not blown. They each run off separate fuses. Wish I knew the answer Jim...

Coblasts

The wiper fuse is fed from the ip/ ign fuse(20 amps) in the fuse block under the hood.
If this fuse is gone your airbags would be faulted as well.
Also check the 25 amp WPR fuse under the hood.

If its not this fuse and your airbags are not faulted then I would be looking for a burnt trace on the bcm.

If this is the case what were you trying to wire up in the car when the problem arised ?????

Unforgiv3n

Nothing, Just stopped working one day, no burnt marks. I do have my Interceptor and wideband wired into the boost gauge harness. Maybe thats not the best spot....

Unforgiv3n

So I double checked all of those fuses and all are okay. I have also checked the relays for those as well. All of the fuses that have been mentioned looked okay but I replaced them anyways and it is still not working.

There are no signs of burn marks on the BCM I also made sure all of the connections on and around the bcm were secure.

Any other thoughts or ideas?

So I double checked all of those fuses and all are okay. I have also checked the relays for those as well. All of the fuses that have been mentioned looked okay but I replaced them anyways and it is still not working.

There are no signs of burn marks on the BCM I also made sure all of the connections on and around the bcm were secure.

Any other thoughts or ideas?

Coblasts

You are going to have to check for 12v with a test light or multimeter on both sides of the wpr fuse which supplies power to both the gauge and the wipers.(one test lead to ground)
If you find 12v on both sides of the fuse(WPR),let me know.(Connector is the next thing to check)
If you dont find 12 volts on both sides ,the fuse is bad or the holder.
If you get no voltage at the wpr fuse then there is a trace gone on the bcm from where the ip gen fuses
feeds the power to the bcm and the wpr fuse.

Unforgiv3n

Great, I'll try to check that today after I get out of class. How do you know all of this? lol

Unforgiv3n

Okay, I know its been a few days, but I checked the fuses (both by the BCM and under the hood) Both sides of the fuses are getting 12v(more like ~14.18) So which connectors am I going to be looking at?

Coblasts

Connector C4, pin # E6 there should be 2 pink wires leaving it.They delivers the power out to the wiper switch and the boost gauge.

You have to some how check continuity from the fuse(wpr on bcm)to this pin on the bcm.
If there is power there then the wires are broken going to the wiper switch and boost gauge .
But I find both of them being broken slim and would think the problem is at the bcm.
If there is no power on this pin then there is a broken trace on the bcm between the wpr fuse and that pin.

I dont no how to make it any easier,Hope it helps.

Had another thought ,pull or wigglle the pink wires on connector c4 maybe there is something wrong with the pinor the wires are loose.
Also if you remove the connector take a good look at the male and female pins for signs of burning.

Unforgiv3n

Is this connector down by the BCM?

Coblasts

yes its connected to the bcm,not sure which one but it should be labled somewhere.

Unforgiv3n

So I decided to give up today and called the dealership to schedule an appointment for tomorrow morning. When I got home i figured I would give it one last shot before I take it in. Turns out there was a contact problem with the wiper fuse and the fuse port. We found out that when we pressed on the fuse it would make contact, but as so as we took the multi meter off and and released pressure the connection would stop.

But the problem is fixed! its weird because it did this with more than one fuse. I grabbed one out of my roommate's escape and the fuse connector looked a little bulkier, put that fuse in and it works great!

Big shout out to Coblast! You gave a lot of information that allowed me to fix the problem, Thanks dude!

Coblasts

Your welcome.
And you saved some big bucks doing it yourself .
Glad to see another Diyer getting it done !!!

Chevycobaltss3

iTrader: (2)

i am having this issue but i keep blowing the fuses. i have my dash tore apart trying to find the fuse. how it blows it if i leave the ca alone for some time, usually over night and i start or put the car in on mode but car not turned on the fuse will blow, and since it snowed today i blew my tail lights again, i usually only blow that fuse when it is cold outsie, i dunno.

I checked the bcm for burnt connections, connectors were tight, i took off the wiper switch connector, and the fuse still blew. i checked the connection out on my pcm, good. but what is weird is my tail light fuse has not blown since last time it got cold, so it seems like somethings is freezing making a conductor but my wipers i checked the wiring from the boost gauge and it seems fine.

what is wierd is when it is a little warmer sometimes it wont even blow. thats for the tail lights, but the wipers every single morning, and sometimes i can let it get warm, or say drive about 10-15 mins and the fuse i replace the wipers fuse with wont blow and it works great tille next time i let the car sit for some while. i dunno, im about to blow her up lol