What is a good o2 crosscount number for a 1994 350 tbi

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

man-a-fre

I'm Awesome
Joined
Jun 5, 2019
Messages
271
Reaction score
276
Location
Lincoln Ne
I was just wondering what is a very good closed loop heated o2 sensor crosscount numbers for a 1994 350 tbi k1500 and what would be a time to change 02 sensor numbers, like how fast should I see the numbers tally on the display when I am driving. Mine are over 200 in a 3 minute drive with a new ntk o2 sensor and only reads from 1 to 3 on a 3minute drive with a 2 year old 10 k mile denso o2. 1 to 3 seems awfully low to me and one and 200 seems high ? The long term trim with the denso is 118 long term on ntk 128 so the ntk seems good, both sensors are going low and high on mv so they are changing but the denso seems too lazy for the age of it, but I never remember the denso with high crosscount numbers like the ntk is giving since new .
 
Last edited:

Schurkey

Supporting Member
Supporting Member
Joined
Jan 14, 2018
Messages
11,349
Reaction score
14,394
Location
The Seasonally Frozen Wastelands
Lowest number I saw on my '88 L05 was 6--8 at idle. 20+ at higher speed.

Your truck is newer and has a heated sensor. 200 seems wonderfully high.

1 to 3 is toast.
 
Top