unknown things in my exhaust line
#1
unknown things in my exhaust line
i have a 2002 5speed that looks to have way too many cats in the exhaust pipe. theres one big one thats the farthest back and then 3 smaller looking ones going back into the engine. i have no idea what they are and am interested in redoing my exhaust system soon.
#4
#7
#10
There are different configurations for different years. (gotta love ford sometimes)
My 06 has three. The two front ones are pre cats. They pre heat the exhaust before it goes into the main cat.
Most of these modern cars now-a-days have 3 or 4 02 sensors too. The front two are *before* the pre-cats. And the last 1 or 2 are *after* the last cat. It tells the PCM how the cats are performing.
Anything down stream of the last 02 sensor/s are mufflers or possibly resonators.
Rich
My 06 has three. The two front ones are pre cats. They pre heat the exhaust before it goes into the main cat.
Most of these modern cars now-a-days have 3 or 4 02 sensors too. The front two are *before* the pre-cats. And the last 1 or 2 are *after* the last cat. It tells the PCM how the cats are performing.
Anything down stream of the last 02 sensor/s are mufflers or possibly resonators.
Rich
#12
Thread
Thread Starter
Forum
Replies
Last Post