New catalytic converters for the '94 XJ6
xj4094dg
Posts: 1,158
OK. I was getting high HC's on a pre-test for smog certification here in California. ,I've been needing rear cats for a while but California FINALLY approved some Magna-Flow aftermarket cats this year. The dealer wanted upwards of $1200.00 for parts alone, the Magna-Flow cats are about $90.00 each (my car has four). Installed total cost was $360.00 at the custom muffler shop.
This is an extra car with 170,000 miles on it and I'd like to keep it for as long as I can drive (sentimental value, my first Jaguar). Looks and runs great.
I had both rear catalytic converters replaced on Monday and
the car passed with the following numbers:
HC (PPM) - 79 at 15 mph - max allowed is 80, avg. is 55
CO (PPM) - 0.01 at 15 mph - max allowed is 0.46, avg. is .14
NO (PPM) - 9 at 15 mph - max allowed is 681, avg is 43
HC (PPM) - 38 at 25 mph - max allowed is 45, avg. is 32
CO (PPM) - 0.03 at 25 mph - max allowed is 0.43, avg. is .12
NO (PPM) - 0 at 25 mph - max allowed is 687, avg is 35
The very high HC reading I'm still getting at 15 mph is
bugging me. Could it be a dirty AFM?
Any ideas?
The car is running noticeably smoother with the new cats.
Cheers,
David
This is an extra car with 170,000 miles on it and I'd like to keep it for as long as I can drive (sentimental value, my first Jaguar). Looks and runs great.
I had both rear catalytic converters replaced on Monday and
the car passed with the following numbers:
HC (PPM) - 79 at 15 mph - max allowed is 80, avg. is 55
CO (PPM) - 0.01 at 15 mph - max allowed is 0.46, avg. is .14
NO (PPM) - 9 at 15 mph - max allowed is 681, avg is 43
HC (PPM) - 38 at 25 mph - max allowed is 45, avg. is 32
CO (PPM) - 0.03 at 25 mph - max allowed is 0.43, avg. is .12
NO (PPM) - 0 at 25 mph - max allowed is 687, avg is 35
The very high HC reading I'm still getting at 15 mph is
bugging me. Could it be a dirty AFM?
Any ideas?
The car is running noticeably smoother with the new cats.
Cheers,
David
"The good thing about science is that it's true whether or not you believe in it." Neil deGrasse Tyson.