At stops battery votage goes up and down causing car to shake

Use vinegar to unfreeze

Ford Crown Victoria Questions - what would cause a whole ...

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CarGuruswhat would cause a whole car vibration when going between 48 and 65 mph, even ... Asked by Dfranz Aug 29, 2013 at 11:53 AM about the 2001 Ford Crown Victoria Police Interceptor ... You have an open diff by turning one wheel the driveshaft should turn before the .... 2007 Ford Crown Victoria Police Interceptor For Sale.

The most likely problem here would be the alternator itself. Either the brushs are wearing out or the regulator is going bad. It wouldn't hurt to check the tension on the drive belt. If it was fairly loose that could cause the problem too. Hope this hrlps.

a faulty temperature sensor, lack of coolant, or oil. those are the likely causes of such things. have a trusted mechanic look into the problem

i have a 1992 ford crown vic lx and my car was doing the same thing i had a very big vaccum leak and also had a bad intake gasket my battery gauge still gose down when i come to a stop but not as bad and my car no longer dies when i stop if its in drive. get a can of intake cleaner and start the car and spray it on the left side of the motor if you here it idl up the theres a vaccum leak on that side if nuthing try it on the other side i hope this helps

have you checked to make sure the convertors are not stopped up? you also could check for a vacuum leak around the intake manifold as well.

check the battery connections,and the wires to the starter solenoid for corrosion,if they are OK then the alternator may be getting worn out,typically a Ford alternator should last to about 160,000 -200,000 miles

IF YOUR HAZARDS STILL WORK IT COULD BE THE SWITCH ON THE STEERING, AS THEY USE THE SAME RELAY IF STILL NO LIGHTS THEN THE RELAY OR MAIN REALY FUSE HAS BLOWN, some time the hazard switch fails which wll also cause failure of all turn lights

U will need to pull the speedo head out and send it in for repair, there are no parts availiable to the consumer, only authorized Ford repair stations, that is not the dealer, check the internet, I use DNA speedometers.com

Sounds like you have a bad heater core. If steam is on the interior you may want to look for moisture around the floor at the firewall.