Alky stays on????

[Buix893]

Hey,
I noticed when my car started it stalled out after turning the alky on after a few seconds. So I pulled the line off the up pipe and whenever I turn the alky on the "power Injection" bulb illuminates and sprays the alky hence stalling my car.

All the connections look good, and the fuse is good also...what can cause this?

 

[Buix893]

Ok, found the problem...when I disconnect the MAP sesnor and turn the alky on it is fine. When i connect the MAP sensor and turn the alky on it sprays the alky, so I am guessing the MAP sensor is bad??? I have a spare 2 bar to try, but the sensor is not old at all

 

[Eric Stage I]

MAP could be bad, but more common is a bad ground. If the MAP sensor loses ground, the output tends to go straight to 5 volts which makes the alky kit think you have max boost.

 

[Buix893]

Eric, Should I ground the sensor and try it again? If I ground it and it still shoots out then the MAP must be bad.

I am using your alky chip so trying to stay outta boost....:biggrin:...might have to put in your street chip untill I get it figured out..lol

 

[Eric Stage I]

Yes if the ground is good, then it may be a bad MAP sensor. You can use the alky chip if you keep the boost down and lower the timing to the 20/18* area.

 

[Buix893]

Sounds good Eric...ima try the ground first thing tommarrow, and will lower the timing on the chip

 

[Razor]

Before you spend money on a sensor get a voltmeter and test the wires feeding the sensor and the sensor itself.
If it's my kit, you need to be using a 3 bar. Not a 2bar
The map that comes with the gn is a 2 bar that is why a 3 bar is supplied with the kit

To test the map sensor first make sure it has power and ground. To do this get a multimeter and put it on volts dc, unplug the map sensor and place black lead into black wire on 3 pin plug and put red lead into gray wire. Ignition ON you should read 5 v
If it reads 5 volts then plug map sensor in and read voltage on the green wire. You need to pierce the wire and use the red lead on the multimeter. Black lead goes to chassis ground.
3 bar map will read 1.6 volts dc key on engine not running
2 bar map will read 2.4 volts dc key on engine not running

This is the only way to test the sensor

 

[Buix893]

Julio...I got it working...:biggrin:, it was a ground. Should I change my oil and filter cause I am nervous that some meth got into it. Is that possible? It stalled the car out a few times so not sure if i should change it

 

[Razor]

Julio...I got it working...:biggrin:, it was a ground. Should I change my oil and filter cause I am nervous that some meth got into it. Is that possible? It stalled the car out a few times so not sure if i should change it

I always say.. when in doubt.. just do it. Worse case it cost you 15.00

If you dont and mess up the motor.. it will cost you 5k

So its 15 vs 5000

 

[Buix893]

LOL...yea ima change it then...if I wantd to test the pump in the future could I run water through it? Would that hurt it?

 

[Razor]

LOL...yea ima change it then...if I wantd to test the pump in the future could I run water through it? Would that hurt it?

Water is not an issue whatsoever. Pump will live forever in water.

Water, alcohol, any mix thereof is fine.

HTH

 

[Buix893]

The sensor is acting wacky again......I put the black lead into the neg wire and the pos lead into the grey and it reads 12.1 volts??? And with ign on it reads 11.87 volts...this normal?

 

[Buix893]

Never mind..I fixed it. I cut the grey wire in half and spliced in a new wire from the ecm to the grey wire and it reads 5 volts ign on, and the green wire reads 1.64....