94 ALTIMA ignition

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  #1  
Old 07-17-12, 10:37 PM
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94 ALTIMA ignition

my 1994 nissan altima will not start. it began about a month ago, every now and then when i tried to strart the car i would get nothing. no sounds (except fuel pump ) just instrument lights. removing the key and trying again usually started it right up (cranked like normal, not slow).

now it just refuses to start, here is what i have tried so far.

testd battery-ok
testd starter-ok
chked fuses and ignition relays-ok
changed ignition lock cylinder and switch

conditions
when the key is turned to start the clock display goes off (not dim)
warning chime-ok
instrument lights-ok
headlites, brake light, interior lights, etc good. do not dim when key turned to start position.
wipers work but when key turned to start position they stop dead.
the car has a security key (kill switch key) that is always in place, never removed for so long cant even remember last time it was used.

someone please help. this is making me crazy and my other car is now showing the same symtoms, no start sometimes but jiggle the key around and it will start.

any clues will be greatly appreciated. thanks.
 
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  #2  
Old 07-18-12, 02:26 AM
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My bet will be in the security system. Is it aftermarket??
 
  #3  
Old 07-18-12, 04:34 AM
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That would be where I would start, too. I would have said bad chip in the key, but you said you replaced the switch; new key, right?

Park/neutral safety switch perhaps.
 
  #4  
Old 07-18-12, 05:42 PM
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more info

thanks for the responses,

yes it is an aftermarket system by ATS, Advanced Technology Systems. it is a 8 pin "key" that disables the car from starting. it is so cheap looking that i never used it. left it plugged in all the time.

the new key i installed is an ignition key ( no chip ) and it checks out fine. seen last post i have also checked;

inhibitor switch ( prnd switch ) - ok
power transistor - ok
ignition coil - ok
solenoid - ok

i want to remove this anti-theft system. any ideas?

thanks, lokahi
 
  #5  
Old 07-19-12, 02:11 AM
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removed tsa aftermarket security key. still have same problem. someone please help!

thanks
 
  #6  
Old 07-19-12, 04:31 AM
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I know this is diy.com, but sometimes you have to surrender and take it to a garage; in your case one that's good at electrical troubleshooting. Your kind of issue doesn't really lend itself to diagnosing on a forum.
 
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