Oct 212017
 

Ford Crown Victoria

The headlights do not always come on when operating the high/low switch. Sometimes they come on, however they don’t come on every time. I’d like to know if there is some part, other than the h/l switch that will cause this intermittent situation? Thank You for your knowledgeable response.


When looking at the diagram it appears the only options would be the wiring, the switch or the Lighting Control Module. If equipped with DRL (Daytime Running Lights) there is the addition of the DRL Module.

Headlights

Headlights without DRL wiring diagram

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Headlights with DRL wiring diagram

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Apr 182017
 

Ford Crown Victoria

I’m getting code p0351

I’m getting code p0351 from my 2007 Ford Crown Victoria Police Interceptor  and I’m wondering what it means and what I need to do to fix. My car drives really ruff and horrible on gas since this code appeared. Please help registration is due in June probably will not pass smog.


Ford Code P0351

Ignition Coil ‘A’ Primary/Secondary Circuit

Each ignition circuit is continuously monitored by the Engine Control Module (ECM). The test fails when the ECM does not receive a valid pulse signal from the ignition coil.

Ford Code P0351 Description

The ignition system on the vehicle uses individual ignition coils for each cylinder. The Engine Control Module (ECM) controls each ignition coil operation. The ECM sends a ON/OFF signal to energize the ignition coil to create a spark at the spark plug when a spark is required at the cylinder.

Ford Code P0351 Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Lack/Loss of Power
  • Engine may be harder to start
  • Engine hesitation
  • Rough engine idle
Jan 232017
 

2003 Ford Crown Victoria P71I’ve replaced all transmission solenoids and fluids. I am still getting codes p0755 and p0753 and o/o light flashes when I drive. The transmission is shifting but not as smooth as I think it can. I am  thinking the ECM is faulty. Is that possible or should I look elsewhere? I need to get these codes cleared so I can smog it. I have cleared the codes with the diagnostic tool but same codes come back and flashing o/o light. It is a 2003 Ford Crown Victoria P71 Police Interceptor.


RESPONSE

I think the o/o light you are talking about is actually the O/D light. This stands for Over Drive.

O/D Off light flashing

Most likely cause

In later years of this model production (aprox. 1995-2003) these vehicles were equipped with either a 4R44E transmission or (1999 and later) a 5R55E transmission. The former has a speed sensor located near the tail shaft housing that, when going out or has gone out, will cause the O/D Off light to flash intermittently or constantly. On the latter (5R55E) this sensor is located inside of the transmission and will cause the same symptoms. This sensor helps the computer to determine proper shift points. In conclusion a bad sensor can cause hard shifting, delayed shifting or even failure to shift, resulting in premature transmission failure. Therefore replacing the VSS – Vehicle Speed Sensor might be the best move.

Ford Code P0755 – Shift Solenoid 2 Circuit Malfunction

The P0755 code is detected when TCM detects an improper voltage drop when it tries to operate the solenoid valve. Shift solenoid valve 2 is turned ON or OFF by the Transmission Control Module (TCM) in response to signals sent from the park/neutral position (PNP) switch, vehicle speed and Engine Control Module (ECM) (throttle opening). Gears will then be shifted to the optimum position.

Ford Code P0755 Possible causes

  • Low transmission fluid level
  • Dirty transmission fluid
  • Faulty shift solenoid 2 valve
  • Shift solenoid 2 valve harness is open or shorted
  • Shift solenoid 2 valve circuit poor electrical connection

Ford Code P0753 – Shift Solenoid 1 Performance

The Code P0753 occurs when the ECM has detected a mechanical fault with the solenoid energized, valve stuck off. Shift solenoid valve 1 is turned ON or OFF by the Transmission Control Module (TCM) in response to signals sent from the park/neutral position (PNP) switch, vehicle speed and Engine Control Module (ECM) (throttle opening). Gears will then be shifted to the optimum position.

Code P0753 Possible causes

  • Low transmission fluid level
  • Dirty transmission fluid
  • Faulty shift solenoid 1 valve
  • Shift solenoid 1 valve harness or connectors
  • Shift solenoid 1 valve circuit is open or shorted
Jan 052017
 

1992 Ford Crown VictoriaIdle is up and down. Car stalling when not giving it gas and stalls when at stop signs/lights.


RESPONSE

Stalling with Idle Up and Down

This is an indication of an IAC(Idle Air Control) valve sticking or a vacuum leak. If there is a vacuum leak the IAC will still try to hunt for the correct idle speed but has difficulty. The difficulty if from the vacuum leak. The most common place for a vacuum leak on your engine would be the PCV valve hose. Listen for a slight whistle noise.

Aug 132015
 

Headlamp Flasher (Wig-wag) Wiring Diagram

I am hooking up the headlamp flashers (wig-wags) on my vehicle. (Before anyone starts hyping out about the legality of the flashers, I will say that I have checked my state and local statutes and have found that headlight flashers are perfectly legal.) My question pertains to the wiring of the flashers. In the image I’ve included there is a red circle around the specific area of interest. The wire labeled “RED” is a 16 AWG with a light blue female quick disconnect on the end. Somewhere after the quick disconnect a 20 amp fuse is needed. The fuse then needs to be connected to the positive battery post. I’d like to know what I need between the battery and the quick disconnect. What type of connector should I have? Do I need a fuse holder? maybe an inline fuse? I don’t know. Any help would be appreciated.

Thanks,

SFoley