Can you Guys Confirm that my Cats are Dead? Also, Longtube Suggestions
Iím reasonably sure I do, just want a second opinion before I pull the trigger on longtubes.
Iíve only owned my 05 Xterra (automatic, 4x4, 130k miles) for a month or so, and the check engine light has always been on. It ran fine, and Iím a mechanic and car dealer so Iím generally not super worried about a check engine light.
This weekend I went on a little weekend getaway, around 200 miles from home. On the way there, it seemed to be having a little trouble going up hills, I just took it easy and slowed down a bit. It was loaded with 5 people + luggage and around 95 degrees outside, but it still kinda made me a little concerned.
Once we arrived, it did fine around town. On the way back I stopped and topped it off with gas, then got on the interstate. The very first time I go up a hill, I get a flashing check engine light. Now Iím concerned. Itís definitely feeling down on power and Iím concerned I have a partially clogged cat. I notice it only does it under heavy load or high engine speeds, so I jump off the interstate and take a smaller two lane highway back. Itís fine at 55mph, so I just donít push it at all.
I get back home and find my little Bluetooth OBDII scanner. I have P0420 and P0430 which I have always had, but now I also have a P0300 random misfire and a P1446 evap code that is probably not related, but I figure I should mention it anyway.
Iím thinking I have one or more clogged cats causing the misfire, lack of power, and also I got 17.4mpg on the highway, which seems a little low, but again this car is new to me. Do you guys think I have clogged/broken primary cats?
If so, is there any reason not to just go longtubes? There is no emission testing where I live and the price seems similar to quality replacement cats, and I might even see some extra power. I can install either cats or longtubes myself, I have a lift.
If you guys suggest longtubes, are the Doug Thorley longtubes still the way to go? Theyíre on sale for $479 here: (link removed because Iím a noob, it was prerunnerparts dot com) a vendor I found searching old threads here. Is this still the way to go?
I think that does it for my novel of a first post on this forum, thanks in advance guys.