Yes, when I was trying to check codes, the ignition was on. The check engine light only blinks while the eng. Is running rough. After about two minutes, the engine smoothes out and the check engine light stops blinking. The engine works fine for the rest of the day and the check engine light does not come on again until the next time it runs rough. Regarding the coolant level, I have not checked it but there has not been any indication of low coolant such as a low coolant light and the eng. Has not overheated due to low coolant. I went out to try the OBD tester again. (Innova 3120). The only indications I get (with the ignition on) is the emission status lights blink green, then green and yellow blink, and finally, the green, yellow and red are on solid for about a half second. Then the OBD goes back to telling me to turn on the ignition and press the on/test button. (But still no codes show.)
Just to make sure my OBD reader is working correctly, I just hooked it up to my 04 Tundra and it says there are no codes presently stored in the vehicles computer so I don t think there is a problem with my tester. There might be a problem with the plug under the dash. Is there another place under the hood to plug into?
Sunday, November 27th, 2011 AT 7:26 AM