changed fuel filter

Asked by Jun 25, 2013 at 06:28 PM about the 2006 Ford Crown Victoria Police Interceptor

Question type: Maintenance & Repair

runs good if I accelerate slowly.. bogs out otherwise

3 Answers

check the vacuum connection to the fuel pressure regulator...hose is cracked or has fallen off~

1 out of 1 people think this is helpful.
77,855

Ditto with judge. Have you checked the fuel pressure and delivery rate?

1 out of 1 people think this is helpful.
21,765

You didn't mention a "Check Engine" light. Is it on? A disconnected vacuum hose on the regulator would cause the fuel pressure to rise (low vacuum=high load=high fuel pressure requirement). I would want to look at the data stream. Particularly at the Long term Fuel Trim (both banks) and the Mass Airflow Sensor (MAF) readings. Could be a fuel pump problem but not likely a regulator concern. The Fuel Pressure Regulator on this vehicle also measures the fuel pressure and temperature. A good scan tool will tell you what you need to diagnose this one. You can compare the fuel pressure reading to the fuel pump duty cycle to see if the pump's doing it's thing. (P.S. - I see "dusted" MAF sensors all the time in our fleet of Police Interceptors. I don't try to clean them anymore - I just change it out if it's bad) I've experienced one other concern with this one and hopefully, it's not your concern too - the engine harness from the processor to the engine can have a break in the 5 volt reference wire just behind the left valve cover. I've seen a couple of these now. Not many, thankfully.

2 out of 2 people think this is helpful.

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