Join Date: Jul 2004
Location: North Carolina, USA
In my auto tech class at the college we have a scanner that you plug into the car's computer and it will tell you EXACT rpms, actual water temp and all sorts of other things. I was bored during class one night so I pluged the scanner into my car's OBD 1 connecter and with my engine idling the scanner read 800 rpm when my tach read 1200 rpm. and when i reved and held the engine at what my dash tach said was 2500 rpm the scanner was reading 2100rpm. Why is it so far off? The cluster has never been taken apart. Why would it be that far off from the factory?
Last edited by customconcorde; 11-25-2004 at 05:35 PM.