High Mileage F-150's / Bad Cats?
06-15-2012, 11:14 PM
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High Mileage F-150's / Bad Cats?
I have a 2007 F150 Lariat crew cab 4X2, 5.4 with 280K miles on it. It was running great until last weekend when the check engine light came on and lost power. Code says bad cat, reset code and seamed to be running fine again.
Light came on again today when I drove from LA to Yuma, AZ then to San Diego and back to LA. You have to climb from sea level to over 4000 feet and going up hills it would slow to 35 mph. If I it kicked down and rev'd to 4K RPM it would shudder and buck like the motor was ready to fall out!
Anyway, I nursed it home and went to Minikie (SP?) to have cats replaced. They told me they can't get replacement cats in CA!
CA is a beautiful place but it is very messed up! 
The guy told me he knew someone that brought their truck to a dealer and it cost $4K to replace the cats!
I'll check around tomorrow but that seams crazy. Has anyone put aftermarket high flow cats on a 2007?
Also, at almost 300K miles I wonder how long the truck will go. It's in really great shape and was running smooth with plenty of power before this happened. Anybody else have high mileage trucks? I wonder who has the highest miles?
Light came on again today when I drove from LA to Yuma, AZ then to San Diego and back to LA. You have to climb from sea level to over 4000 feet and going up hills it would slow to 35 mph. If I it kicked down and rev'd to 4K RPM it would shudder and buck like the motor was ready to fall out!
Anyway, I nursed it home and went to Minikie (SP?) to have cats replaced. They told me they can't get replacement cats in CA!
CA is a beautiful place but it is very messed up! The guy told me he knew someone that brought their truck to a dealer and it cost $4K to replace the cats! I'll check around tomorrow but that seams crazy. Has anyone put aftermarket high flow cats on a 2007?
Also, at almost 300K miles I wonder how long the truck will go. It's in really great shape and was running smooth with plenty of power before this happened. Anybody else have high mileage trucks? I wonder who has the highest miles?
06-16-2012, 03:14 AM
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If you're looking just for catalytic converters check out Random Technology. I think Magnaflow also makes high flow cats but I seen their quality and it sucks.
06-16-2012, 10:54 PM
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Well, dealer quoted $2350 to replace cats!
Decided to cut them open and gut them. Cut off heat shields (won't need them any more) and marked the opening. Used my cut off tool and mini sawzall to cut open flap.
Passenger side was toast, all broken up. Cleaned it out and welded up flap.
Driver's side was not bad but gutted it anyway. Welded it back up and went for a test drive.
Holly crap! The truck hauls butt now. It has a Flowmaster muffler so it is a little loud. Not bad from inside truck though. I'll see how it is on the freeway.
Decided to cut them open and gut them. Cut off heat shields (won't need them any more) and marked the opening. Used my cut off tool and mini sawzall to cut open flap.
Passenger side was toast, all broken up. Cleaned it out and welded up flap.
Driver's side was not bad but gutted it anyway. Welded it back up and went for a test drive.
Holly crap! The truck hauls butt now. It has a Flowmaster muffler so it is a little loud. Not bad from inside truck though. I'll see how it is on the freeway.
06-17-2012, 04:21 AM
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Senior Member
Well, dealer quoted $2350 to replace cats!
Decided to cut them open and gut them. Cut off heat shields (won't need them any more) and marked the opening. Used my cut off tool and mini sawzall to cut open flap.
Passenger side was toast, all broken up. Cleaned it out and welded up flap.
Driver's side was not bad but gutted it anyway. Welded it back up and went for a test drive.
Holly crap! The truck hauls butt now. It has a Flowmaster muffler so it is a little loud. Not bad from inside truck though. I'll see how it is on the freeway.
Decided to cut them open and gut them. Cut off heat shields (won't need them any more) and marked the opening. Used my cut off tool and mini sawzall to cut open flap.
Passenger side was toast, all broken up. Cleaned it out and welded up flap.
Driver's side was not bad but gutted it anyway. Welded it back up and went for a test drive.
Holly crap! The truck hauls butt now. It has a Flowmaster muffler so it is a little loud. Not bad from inside truck though. I'll see how it is on the freeway.