Honda Emission

My Honda 1990 Civic Lx 1.5 New Calitic Conv. New Ox Sen. Running Rich Wont Pass Smog Need Help What Do I Do Next ? Whatsthe Prob. ? Please...

There Is No Vaccum Going To The Egr Valve

What Causes Co% (max.63 Measured 1.57%) To Be Too High In Only The 25 Mph Test? Before This We Had To Replace The Egr Valve And Reset...

Hi, My Car Has Seen A Noticeable Drop In Mpg Rating So I Hooked Up My Scan Tool To Track My Stft 1 Percentage. The Range From Highest To...

O2 Trouble Codes. Slight Surging (speed) On Highway Hello, I Recently Replaced The Original Never-changed 02 Sensors. No Prior Problem...

My Car Failed This Years Emissions Test With A High Nox Reading. My Car Is A 1989 Honda Civic Hb With A 1.5 Engine, 4spd. Does It Have An...

My Car Faild Smog Because Of High Hc And O2 Why?

Engine Mechanical Problem 1989 Honda Accord Front Wheel Drive Automatic 117000 Miles I Asked A Question Earlier Pertaining To My...

Can Anyone Tell Me Exactly Where The Pcv Valve Is Supposed To Be Located On An 89 Accord With Fuel Injection. I Think Someone May Have...

Engine Performance Problem 1989 Honda Civic 4 Cyl Two Wheel Drive Manual I've Been Told So Many Things That It Could Be. I Tuned It...