swaycleveland

ive about had it ! everything i do majkes the readings go up !! wtf?
ive readed blogs for days done everything i can think of with the exception of timing
my NO reading is 1203
passing is 956
i started at a 1049 new pcv
new egr
new plugs new wires cap roter
cat and muffler are new
oil is fresh
all with 2 weeks
anyone got anything?????????????????? help

8yota9

Private garage $100 for a 2 year sticker..well thats what i got.

elripster

Something is not working. It's time to not assume that which is new is good.

First off, with numbers that high I would seriously question the cat. You can point one of those infrared thermometers (Radioshack has em but I'd try to borrow one, they are about $50) at the cat and I believe it should be around 50-100 degrees hotter on the outlet than on the inlet. If the inlet/outlet temps are the same, it is bad.

Just curious, but what do your HC's look like? Are they high but passing?

If you aren't throwing a code 71 then likely the egr is working correctly.

Bad timing, plugs, and such will raise numbers, but they should not cause a failure of that magnitude.

Frank

swaycleveland

frank the cat is 5 days old lol im thinkin thats not it right now im down to timing (which will e checked tomorrow) and c4

swaycleveland

by the way the other readings are just fine up and down a point or 2 ( which i thought might lead me in one direction or another but i cant make heads or tails of it)

mt_goat

Is it one of those $60 aftermarket cats? The factory cat on those early years were packed with expensive metals, I got $140 at the scrap metal recycling place for my old 93 cat. I don't see how one of those cheap cats could work as good as the original did, maybe you need to run 2 of them like the newer trucks do. I know my 2001 5VZ ECU didn't like one $60 cat at all, it threw a P0420 code about every other day. But running 2 cats is suppost to satisfy it.

swaycleveland

lol nope it was a factory replacement i spent all the money!