How bad is this???
Thread Starter
Joined: Jan 2008
Posts: 8,184
Likes: 28
From: Orange County, CA
How bad is this??? I had my 97 SS smog tested yesterday and unfortunately I failed. 
_______%CO2___%O2________HC (PPM)_______CO (%)_______NO (PPM)
Test___MEAS___MEAS___MAX___MEAS___MAX___MEAS___MAX ___MEAS
15mph__13.2____1.0_____51_____210____0.48___1.07__ __419____1034___FAIL
25mph__13.7____0.5_____35______68____0.46___0.73__ __706_____689___FAIL
How bad is this? Will new cats help? (assuming they are bad). New o2's? (still have factory ones on there). Car has ~150K on the clock.
_______%CO2___%O2________HC (PPM)_______CO (%)_______NO (PPM)
Test___MEAS___MEAS___MAX___MEAS___MAX___MEAS___MAX ___MEAS
15mph__13.2____1.0_____51_____210____0.48___1.07__ __419____1034___FAIL
25mph__13.7____0.5_____35______68____0.46___0.73__ __706_____689___FAIL
How bad is this? Will new cats help? (assuming they are bad). New o2's? (still have factory ones on there). Car has ~150K on the clock.
dont cats get expensive??? just get a cough cough...then u know it will for sure pass
...what if u get new o2's and cats and u still dont pass???
*edit...
u only have a catback? thats weird ur failing
...what if u get new o2's and cats and u still dont pass???*edit...
u only have a catback? thats weird ur failing
Thread Starter
Joined: Jan 2008
Posts: 8,184
Likes: 28
From: Orange County, CA
hey check this out jason, http://www.wallpaperama.com/forums/h...pass-t528.html
"10. Oil leaks around the engine, an oil leak means that you are losing oil pressure. The PVC valve is also responsible to recycling these fumes, and if you have a leak, then your emssions system may not be working right."
maybe the leak caused it?
"10. Oil leaks around the engine, an oil leak means that you are losing oil pressure. The PVC valve is also responsible to recycling these fumes, and if you have a leak, then your emssions system may not be working right."
maybe the leak caused it?
that looks like your car is dumping an assload of fuel into the cyclinders and possibly that your cats are also bad,
first seafoam the shiot out your car, especially if you have never done it before,
then pull your spark plugs check them, replace if needed
then check the egr valve, could be causing the NO to be soo high (may get cleaned and unstuck with the seafoam, might not)
next I would replace those o2 sensors,
next check cats and replace
On a side note if you were to choose a car to possiby fill a garage with lethal gasses this would be it
first seafoam the shiot out your car, especially if you have never done it before,
then pull your spark plugs check them, replace if needed
then check the egr valve, could be causing the NO to be soo high (may get cleaned and unstuck with the seafoam, might not)
next I would replace those o2 sensors,
next check cats and replace
On a side note if you were to choose a car to possiby fill a garage with lethal gasses this would be it
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you're aiming for third degree burns.. anything less and they aren't hot enough
Thread Starter
Joined: Jan 2008
Posts: 8,184
Likes: 28
From: Orange County, CA
that looks like your car is dumping an assload of fuel into the cyclinders and possibly that your cats are also bad,
first seafoam the shiot out your car, especially if you have never done it before,
then pull your spark plugs check them, replace if needed
then check the egr valve, could be causing the NO to be soo high (may get cleaned and unstuck with the seafoam, might not)
next I would replace those o2 sensors,
next check cats and replace
On a side note if you were to choose a car to possiby fill a garage with lethal gasses this would be it
first seafoam the shiot out your car, especially if you have never done it before,
then pull your spark plugs check them, replace if needed
then check the egr valve, could be causing the NO to be soo high (may get cleaned and unstuck with the seafoam, might not)
next I would replace those o2 sensors,
next check cats and replace
On a side note if you were to choose a car to possiby fill a garage with lethal gasses this would be it
I recently replaced the egr valve with a used one that I cleaned.
The o2's have been on my to-do list for a while.
One cat is original, one cat is new, but the new one is the one that scrapes.
Thread Starter
Joined: Jan 2008
Posts: 8,184
Likes: 28
From: Orange County, CA
Plugs, wires, coil, & opti are fairly new. o2's and bank 1 cat are original though.
During closed loop the engine alternates between running slightly lean and slightly rich to fuel the different beds of the cat. If you can hook up a scope to the O2 sensor wires, the voltage should bounce between somewhere around .2v and .8v. High HC and CO levels are present when you're richer, High NOx levels are present when you're leaner than 14.7:1.
Thread Starter
Joined: Jan 2008
Posts: 8,184
Likes: 28
From: Orange County, CA
During closed loop the engine alternates between running slightly lean and slightly rich to fuel the different beds of the cat. If you can hook up a scope to the O2 sensor wires, the voltage should bounce between somewhere around .2v and .8v. High HC and CO levels are present when you're richer, High NOx levels are present when you're leaner than 14.7:1.
Thread Starter
Joined: Jan 2008
Posts: 8,184
Likes: 28
From: Orange County, CA