Rus,
Does your emissions testing place give you a printout of the pollutants being emitted by your car?
Usually will have a list of HC, CO, CO2, and NOx.
If you have that printout, and can post it, we can tell you how likely it is that its your catalytic convertor that will need to be replaced by the results we see.
BC.
Back in the day at the TV shop we used “Blue Stuff” spray to abrasively clean electronic contacts, then “Blue Shower” to clear it away.
BC, I’l look in the glove box in the morning and if I still have it I’ll post the results. Why is it called a glove box? I don’t keep my gloves there. LOL
TEST RPM %C02 %O2 HC(PPM) CO(%) NO(PPM)
15MPH 1636 14.8 0.1 12 0.21 162
25MPH 1672 14.7 0 1 0.08 44
These are my ASM Emission Test Results.
I’m unable to line up the readouts with the correct columns.
The O2 and NOx numbers look high to me.
If there’s too much oxygen in the exhaust the converter cannot remove the NOx
The %02 shows 0.1 and 0
The NO shows 162 and 44
@15mph and 25mph
I thought the O2 was 14.8 and 14.7. I see now that would make no sense.
Anyway NOx is high. Make sure the EGR passages aren’t clogged.
After really cleaning the MAF sensor and a new boot and cleaning the throttle valve the light has been off for eight days. If the light comes back on I’ll be sure to check the EGR and hoses. Thanks for your input.
After reading about the problems relating to the EGR sensor I’m sure it isn’t the problem. I have good start, idle, acceleration; no bad idle or stalling, etc.
Those are only some things that might happen only with only certain kinds of EGR issues. The lack of these doesn’t mean that your EGR system is functioning well. The lack of a code for it also doesn’t necessarily mean all is well. Sometimes it takes a lot for the computer to catch on.