I was cruising Sunday night and after a turn my car shut off and now won't start... The fuel pump won't prime but the car will crank over. And when it shut off it was hard for my key to turn off then back on like it got stuck almost I checked grounds on back of head all 3 are tight and One of my friends suggested its an ignition switch but also another said vats ? I have a viper alarm with Autostart also but have had it for 2 years no problems. What the hell could this be ? Also all lights work interior and exterior radio ext. but the service engine light under tach came on and the security light is also on but has been on for a few months. i replaced ignition switch last night and it still doesnt get power to fuel pump ive spent over 40 hours on this and still cant find out

 

Maybe fuel pump went out or fuel pump relay have you trouble shot any of that

 

I replaced relay and still wot prime I bypassed vats also now security light is off ad pump still won't prime

 

Did you check the fuse first? Otherwise your pump may have pumped its last.

 

Yup put 12v to the pump it primed and all fuses are good but it just won't prime on its own ive tried everything I just don't know could PCM be fried ? It gets power to relay just not switching over to prime pump

 

Check the connections to the relay, also swap the relay with the ac one and see if it will start then. This is more of a connection problem than anything else. Also take a dvm and check to see if the computer is giving the relay the turn on signal (voltage to activate it).

 

Swapped relays nothing worked and also removed my viper alarm system thought maybe it got fried still didnt change anything gas guage is reading 0 when I have 3/4 tank in there and it says service vehicle under tach all grounds are good so now I'm at a dead end maybe bad PCM?

 

When turn key it acts as if the car is in drive or something just turns every light off on dash ad everything

 

Also the air bag light is stuck on if that means anything put the car in neutral see if it changed and nothing still won't crank or anything used to crank before the car died now It won't crank one bit

 

Just on a weird thought, have you ever pulled your bcm and checked the grounds inside it? Otherwise you have something grounding out or possibly your pcm. Take a digital volt meter (dvm) and check the output of your computer where it goes to the relays, if there isn't any power it is probably your pcm, it they are there and measuring around 12v then keep looking for something else.

 

I will do that with Dvm today and ill try and pull bcm and check all the solder and stuff in there

 

I went ahead and reposted a link to the maintenance and general repair section.

 

Thank you Im getting 13v to starter and to all the relays so what the hell

 

FIXED replaced pcm even though i was getting 13v to every wire out of the damn thing and bam started up so now time to get a tune thanks for the help guys something with the alarm had to of done it