I have a 1996 GTI. When I plug the key to it the buzzer goes off and shows the overheating light which stays on. I have checked the temperature sensor and it's good. I have checked all the wires out of box and all have 0 ohms. I have installed a new mpem and a new rectifier and it still has not fixed the problem. When I start the ski up it will run good and when I test the voltage it's good coming from the stator and the rectifier to the battery, but after a few minutes the ski idle drops from the 3000 rpm out of water idle to about 2000 or 1500 rpm and idles rough. The voltage coming from rectifier to battery is the same as the battery which is 12 something volt's and voltage coming from stator drops from about 22 volts to about 14 volts. Anyone have any idea?
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1996 GTI electrical issue
- Thread starter JB!
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I checked all out going ground wires with ohm meter and they looked good. I also took a 12 guage braided copper wire and connected it directly to the battery and hooked it up to the ground post in the electrical box and no change. I noticed that the ground is fed into the electrical box through the 4 wire stator plug so i thought maybe there was a bad connection in there that's why i put the ground directly into the box but it didn't fix the problem. Maybe i missed a bad wire somewhere I'll check them again
Not sure if i checked this the correct way but i plugged the key in so the buzzer was sounding and the light was on. l unhooked every plug one by one i figured if i unplugged the bad ground it would quite sounding the buzzer and the light would go off. That didn't work the only time it went off was when i unplugged it. I checked the voltage coming out of the mpem to the buzzer brown and purple wires with it sounding and it was throwing 11 volts out of the mpem. So i unplugged all of the connectors up front of the ski to the guages and unhooked the buzzer and heat sensor in the electrical box. I unhooked everything except the power going to the mpem and it was still throwing 11 volts out to the buzzer from the mpem. What i did was hooked up the dess key and then unplugged it from the box and checked the voltage before the 30 second shutdown on the mpem. Is it always supposed to be throwing power out to the buzzer like that. The brown side of the buzzer wire also splits to the temp sensor and to the guage. The purple side splits off to the guage in the electrical box.
Not sure if i checked this the correct way but i plugged the key in so the buzzer was sounding and the light was on. l unhooked every plug one by one i figured if i unplugged the bad ground it would quite sounding the buzzer and the light would go off. That didn't work the only time it went off was when i unplugged it. I checked the voltage coming out of the mpem to the buzzer brown and purple wires with it sounding and it was throwing 11 volts out of the mpem. So i unplugged all of the connectors up front of the ski to the guages and unhooked the buzzer and heat sensor in the electrical box. I unhooked everything except the power going to the mpem and it was still throwing 11 volts out to the buzzer from the mpem. What i did was hooked up the dess key and then unplugged it from the box and checked the voltage before the 30 second shutdown on the mpem. Is it always supposed to be throwing power out to the buzzer like that. The brown side of the buzzer wire also splits to the temp sensor and to the guage. The purple side splits off to the guage in the electrical box.
K i think i have figured it out like you said that is all supposed to be on a closed circuit and i should not be getting any voltage through that unless there is a ground connection. So the mpem is junk the bad thing is its new its new junk anyway so im getting another one. Could that also be causing the sudden dorp in rpm and rough idle to. Sometimes it's running like a dream and i shut it off startit back up and it acts up again or it will start off running good then start acting up. Its not the carbs they are clean and up to spec's all the way round
I would only buy a MPEM from Nick at Westside Powersports @Minnetonka4me. He is the only one that tests them and guarantees they are good. He actually will answer the phone with any questions too.
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