Catalytic converter
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Freshman User
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Catalytic converter
I was doing some maint. on my truck and i was checking out my stock exhaust system and i didnt see anything that looks like a converter. All i see is straight pipe from the mani's back to the muffler and thats it. Anyone else truck come like this? I'm only the second owner and maybe the first guy took them off but that doesnt make sense. Am I missing something?
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I looked at the system pretty good and i dont see anything thing that looks like a cat. I see both tubes running under the passenger seat and its just that.....some tubes.......then it gets to the huge mufflers. It doesnt look like any aftermarket tubing, looks stock to me. Oh well i guess i dont have to worry about loosing power over a clogged cat!
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From: Belle Mead NJ
I have a, u know 95 F350 with the 351. My stock exhaust was the manifolds, then the dual y pipe, then right where the cab and bed meets there is the cat, when the exhaust should follow. I know some vary as the Cabs and bed length, Mine is standard cab long bed.
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From: Covington, Tn
If Im not mistaken over a certain weight didnt have to have the cats. Am I right He does have a 350
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my truck is a 93 F-250 SC LB 4X4 w/ 351. I will take pics tomorrow to show. Also, my ABS light is blinking....it blinks 15 times then is steady on and then repeats itself. What could that mean?
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From: Quad Cities, IA
My '89 F-250 (460) has two pipes, one from each manifold, that go into a single cat. The cat itself has two small A.I.R. pipes coming out the top. After the cat there *used* to be a pipe leading to a muffler, then a pipe dumping the exhaust out behind the passenger side rear tire, but the previous owner removed everything behind the cat and just put a turn-down on it. Ironically, it's not too loud, and aside from a small exhaust leak it sounds pretty good.
My '85 with the 351 actually has a cat, a "resonator" and a muffler in it's setup. It's insanely quiet. The fan on the engine is louder than the rest of the truck.
I would guess that if you do not have both a cat (or two cats as I've seen from time to time), a "resonator" and/or a muffler, someone's done some modifications to your exhaust system. Though it may not look like new pipes, aftermarket exhaust components can wind up looking old/stock after being on a vehicle for a few years.
My '85 with the 351 actually has a cat, a "resonator" and a muffler in it's setup. It's insanely quiet. The fan on the engine is louder than the rest of the truck.
I would guess that if you do not have both a cat (or two cats as I've seen from time to time), a "resonator" and/or a muffler, someone's done some modifications to your exhaust system. Though it may not look like new pipes, aftermarket exhaust components can wind up looking old/stock after being on a vehicle for a few years.
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This truck should have come with a big-*** cat right underneath the passenger seat and a big-*** muffler behind it. Some trucks did have two smaller cats, but those were only the lower GVW vehicles like F150s and Broncos.
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From: Belle Mead NJ
My 95 F350 351 doesnt have the air stuff going to the cats. Not that the cat is still on it but ontop of the converter there is just 2 plugs where the air tubes would go. I did notice that on a buddys truck he had more emissions stuff then I did. It was a 89 or 91 F250, same engine. But back to the matter, you should have a cat under the end of the cab, beginning of the bed.
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From: Quad Cities, IA
My cat is also located directly under the passenger seat. Should've mentioned it in my last post, but it didn't occur to me to do so.
A lot of F-350's and above didn't have the same emissions requirements as the lower GVW trucks, and thus didn't come with a lot of the A.I.R. systems, and some without cats at all in older trucks. Not all of them were like this, but a good portion.
A lot of F-350's and above didn't have the same emissions requirements as the lower GVW trucks, and thus didn't come with a lot of the A.I.R. systems, and some without cats at all in older trucks. Not all of them were like this, but a good portion.
