so my check engine light is on and i put a scanner to my 96 cherokee and it sayed the code was p1899 park/neutral switch stuck in park or gear i canged the fuses for this but the previus owner made it so that the starter was controlled by a switch would that make it get this code or is it something else any help on this would be great i need to get this jeep on the road this month thanks

 

It could be referring to your Neutral Safety Switch. Maybe you could just clean off the electrical connection with some contact spray to get a better connection.

 

thats true ill try that tomorrow i was told that if i could start my car in drive then that means it is the neutral safety switch which i did and it started in drive but i was thinking since the starter is on a switch that it would start in any gear because even wen the key isnt in the ignition the starter will still crank

 

if it cranks when the key is off thats y it cranks when it is in gear. do u know what transmission u have?

 

thats wat i thought i have wat ever a stock transmition was in an auto 4.0 96 cherokee

 

You have an AW4 transmission. You can start it with the key off by the switch?

 

the car wont start the starter will just crank the key has to be turned all the way then u hit the switch and it starts

 

u should have a aw4 trans. on the passenger side of the transmission there will be a black square box that has a shaft that runs threwit. thats ur park/neutral switch. follow the wires from the switch and check to make sure its pluged in and the wires and plug look clean and not damaged. if everything looks good then the switch either needs to be adjusted if its posible or its just no good. when they go bad it wont let the car crank thats probably y theres a starter switch now. its cheaper to hook up a switch than to replace that part.

hope this helps u

 

thanks it defenitly helped me out ill check everything out tomorrow and let u no wat happens

 

kool good luck.

 

if you can start the jeep in drive from a switch without having the ignition key in then what the guy did was bypass the ignition switch. doing this would throw the code right away, even if there technically was nothing wrong because it senses that there is no voltage passing through the switch.

 

It won't start with the ignition off in any gear the key has to be be on but I was lookin at the wires and the black plastic that is around them melted and part of the wire might have melted could that be my problem?

 

if the wires melted thats y its throwing that code. u need to find out y they melted. its either to close to the exhaust or u have a short in that part of ur harness.

 

It was to close to the exuast

 

u need to replace the park/neutral switch and make sure u tuck the wire away from the exhaust and that should fix ur problem. that will fix the problem with the check engine light. if u want to take the switch out and be able to start it with the ignition u will need to c how the switch is ran. who ever did it could have done it one of two ways. either ran the switch to the starter or hooked it up under the colum. if u know alittle bit about the wiring in a car u should be able to figure it out pretty easy.