1999 GSX Limited

[Gingi017]

I picked up a 99 GSX not too long ago and just recently started messing with it. With that being said, Everything seems pretty clean for it being 24 years old but I can’t to figure why I can’t get any power! I’ve checked all the fuses and they seem to be good. Except one that was blown which was the VTS. Any tips that would help ?

 

[rusty nail]

If your battery is good, start by making sure the dess key works and communicates with the mpem. You should be getting beeps when the key is put on the post unless the beeper is broken.

 

[Gingi017]

Yeah I’m not getting any of that. I want to see the ground for the negative I’m sure its corroded

 

[rusty nail]

yup.....check all the grounds.(in the ignition box....there is i believe two fuses in there as well)

 

[Gingi017]

yup.....check all the grounds.(in the ignition box....there is i believe two fuses in there as well)

Yeah the fuses seem to be good all except one vts one in the mpem I replaced. Anything else it could be? How do I check the mpem?

 

[rusty nail]

If i am not mistaken, there is also one thin small ground off the mpem that need to go directly to the battery neg. post along with the main heavy starter ground. you may have forgotten to attach it.

 

[rusty nail]

test your dess post and key. i think there is somewhere in these forums how to do that.

 

[rusty nail]

if your dess key and post are working....make sure you are getting 12v to the mpem. ......after that ......see if you are getting 12v to the solenoid.....if not, your mpem is done.

 

[rusty nail]

do not boost your battery. the mpem is sensitive to surges and you will cook it immediately.

 

[Gingi017]

do not boost your battery. the mpem is sensitive to surges and you will cook it immediately.

Thank you. I will try when I get home. And update !

 

[Grim]

I not sure this has been asked, but are the gauges coming on when you install the key? Sometimes the beepers are bad.

 

[mikidymac]

The bad news is that the VTS fuse is blown. It’s really common on these for the VTS system to go bad a fry the MPEM. To start unplug all of the VTS wires and don’t reconnect them until you find out the MPEM issue.

Even without the DESS and lanyard the instruments should wake up just pressing the start button a few times if the mpem is working.