99 crown vic when driving a little imperfection in the road cause a rattle for a second or two that goes away. it affects the whole car can't tell if it is front or back

I am sorry but I would need to road test the car and hear the noise to have any hope of knowing what it is.

Wow, this is a broad question and I side with your mechanic on this one. I think a sensor is shot. There are a couple of sensors involved with your car's performance. They, in turn, interact with other sensors so that everything operates in unison. In others words, if this sensor, you can call it the kick-down sensor, if you want to, isn't reading the proper positional information from your throttle -- starting about 1998 Ford was using a great many electronic circuits and sensors for performance, rather than just mechanical systems -- then it isn't telling the ECU (electronic control unit or the vehicles "brain") the proper information. In turn, the ECU can't order other systems to fire or work in the proper sequence.

Given all of this, it is little wonder that your Crown Vic isn't performing well.

I would suggest having this range of sensors looked at, the Mass Air Sensor, the Idle Air Bypass Sensor, the Throttle Positioner Sensors and the like. Granted, some of these sensors (Mass Air and Idle Bypass) are more for idle and low-speed performance, but you just can't tell when one or more of them may fail and interact with other sensors in the change. I think the most likely candidate of the bunch is the Throttle Positioner. If the ECU isn't reading throttle position correctly then performance will suffer.

One other possibility -- and this is a thought -- is to have the EVP sensor checked as well, though this one is more involved with emissions than other things. Still, it could affect your Crown Vic's performance.

I have a 92 Crown Vic first and second works fine reverse works fine when it shifts in the third gear it goes to slipping and overdraft can you help me fix this problem thank you

A bent rotor or a stuck piston in ur caliper either from dirt in caliper or a bad your brake hose. Thats what I'd say were the most likely causes and if you don't feel a wobble I'd say the caliper on one of your wheels. chk ur pads if 1 set is worn a lot more than the others or an excessive amount of brake dust on 1 rim that could be your culprit. Hope that helps.

check the fuse first, then check the connections at the back of the lighter. very basic electrical circuit

1992 Ford Crown Vic 4.6 L V8 Automatic

Fuel tank capacity is 20 gallons (US).

Your fuel consumption will be affected by many factors, such as :
- how you drive the vehicle
- the condition and tune of the motor
- driving conditions (traffic, city use, highway use etc)
- tire pressures
- type and grade of fuel used .

It is impossible for me to estimate what fuel consumption you can expect from your own particular car without a whole lot of information.

It's unwise to run the vehicle for long with no working fuel gauge.

You may have a dirty MAF, Mass Air FLow Sensor. Clean with MAF cleaner or spray carb cleaner on the glass resistor wires. They affect fuel ratio. It is in the air intake tube and has a 2 wire connector. The wires that need cleaning are on the inside. Clean carefully, delicate. Disconnect battery fo 2 hours to clear computer memory. Drive for 10 miles to relearn.

report back

i am trying to install an aftermarket temperature guage with capillary tube into my 1988 crown victoria ltd 5.0 efi. where does the capillary tube mount?

change the egr vavle !!!!!!!!

I replaced the same part on a 1994 Crown Vic. There are a few bolts which go through rubber mounts on the firewall and that is how the wiper motor fits against the firewall. There is a clip on the wiper drive that must be pressed and slid off the wiper shaft. The hardest part was getting clearence between the engine and wiper motor. If I remember there was a way to turn the wiper case to clear the engine. I have asked myself why this was engineered like this? There is nothing important in the way that 3/4" of clearance could have been given for removal.