1995 ford crown vic won't start. The inertia switch is OK. Checked the fuses OK

Maybe your problem is with the one or many injectors, if just one is bad, you will have problems. Get yourself a multimeter and set it to read in ohms and find what spec the injectors should be at. If out of spec, then you need to replace that one injector(s).

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it sounds like the ignition cylinder has dropped a tumbler not sure of replacement procedure for ur car but it needs the ignition cylinder replaced

sounds like your speakers aren't connected properly. check your speaker leads coming from your radio and make sure they are positive to positive and negative to negative. if you're using an external amplifier,check your RCA cables and your speaker outputs on the amp. make sure thr remote turn on lead is connected, otherwise the amp won't even power on.
hope that helped, good luck

have u checked the wiring harness

I would check the plugs around and on the engine. Also check to see if the inertia switch in the trunk was tripped, that cuts off power to the fuel pump in an accident.

charges apply

DID YOU CHECK THE FUEL PUMP SHUTOFF SAFETY SWITCH ON THE LH/DRIVERS SIDE IN THE TRUNK & MAKE SURE IT IS DOWN ,& EVEN IF IT IS SOMETIMES YOU CAN TAKE SOMETHING & PUSH IT UP & THEN PUSH IT BACK DOWN & IT WILL CRANK,& BELOW THAT SWITCH IN THE TRUNK IS A FUEL PUMP DRIVER MODULE ,IT MAY BE BAD,THOSE ARE A COUPLE OF THINGS THAT HAVE WORKED FOR ME ,& THATS PRETTY MUCH ALL I DO IS WORK ON FORDS, & LX CROWN VICS & P71 POLICE CROWN VICS WHERE I AM WORKING, HOPE THAT IT MIGHT HELP YOU FIX IT. SEAN

Check the fuse for your cigar lighter/horn. I've seen the fuse blown from the lighter shorting. It will caue the cruie not to work also. I hope this helps. Good luck.

Have he transmission drained and the screens cleaned

did you check the inertia switch?? that's what happened to mine