Asked by May 11, 2016 at 01:55 PM

Question type: Maintenance & Repair

95 crown Vic as I've been driving the
grandma car I notice it starting to run
better and accelerate pretty good but now
it has a rattle it sounds like a midget with a
ball ping hammer hitting the cat converter ,
maybe the carbon is breaking loose does
anyone know how many cat converters on
this year I heard 4 but are they all se
censored and does this make any sense
what I'm experiencing , please help with

1 Answer

William Reeves

if your converters were a problem you would be slowing down and your engine temp. would be going up. check the knock sensor and see if its bad because it should be adjusting your engine timing so your car doesn't make that noise. and there can be one to four converters but my guess is two on that year make and model and if their bad your car will not want to go at higher speeds, it will have a surge back and fourth and run at a higher engine temp. change the knock sensor and or check the wiring to it. and yes it will have an O2 sensor in front and one in the rear.

Your Answer

Add photo

Related Questions

  • Exhaust 4 answers

    I have a 2000 Toyota Solara SLE V6 3.0L. I was concerned about its unusually loud acceleration. It idles smooth and quiet but when I accelerate, it sounds very loud as if it had an aftermarket exha...

    2000 Toyota Camry Solara SLE


    Maintenance & Repair

  • Exhaust 1 answer

    So my car is smoking from the exhaust the smoke is a thick white/grey color and runs through oil really fast I read an article on the pcv valve? Could this be my problem? What else could cause thi...

    2008 BMW 3 Series 328i


    Maintenance & Repair

  • Exhaust System 1 answer

    I appear to have a leak in the exhaust system. It's in a "mesh" pipe that is a dual pipe and appears to be the transition point between the exhaust manifold and the rest of the exhaust system. What'...

    1998 Lexus ES 300


    Maintenance & Repair

  • exhaust smoke 1 answer

    have a problem with excessive exhaust smoke

    Toyota Tercel


    Maintenance & Repair

  • i have coolant in my exhaust 3 answers

    My RR is leaking coolant into the exhaust

    2005 Land Rover Range Rover Westminster


    Maintenance & Repair


Search Maintenance & Repair Questions

Maintenance & Repair Experts

#1 Tom Demyan
Tom Demyan
Reputation 145,640
#2 FordNut
Reputation 100,640
#3 dandyoun
Reputation 82,330
View All