I have a 94 geo prizim with 235k 5 speed manual, im getting 15 mpg hy, the car has a rough idle and sputters at any rpm you hold it at! But if you are acellerating it dose not lack any power and gos fine but I can tell its running Rich. I tryed getting engine codes off of it but, all I got was a continuous. Flash (no codes) I have replaced cap and rotor, sparkplugs, with the right gap, .042, new wires new air filter, fule presher regulator, that was off ebay? All the vacume lines are on. Tge timing is on. I also tested compershion in all cylinders cold all at about 200psi orerating temp 180. I unpuged the o2sensor and drove it to work and it did not run any different and the cheack engine light dident come on?
I need some help this car should atlest get 25 mpg! Any suggestions
Thursday, August 16th, 2012 AT 7:26 AM