Contour Enthusiasts Group Archives Forums General Troubleshooting Idling problem

Posted in Zetec Maintenance also, figured I could get a better response here.

95 Contour GL Auto 2.0

For a while now I have been having a problem with the idle. Whether in park or in drive the idle will jump 50 to 100 rpm's over and over. So, yesterday I pulled out the ole trusty Haynes manual and checked some components and their specs. I cleaned the maf, checked the idle increase solenoid and it's diode for proper operation, that checked out. This is where I got confused, I then checked the IAC valve, the manual says to connect 12 volt power source, + to the green/yellow and - to the black yellow and you should hear a distinct click noise, I did hear that noise. Then it says that if you don't hear that noise to check the resistance across the two terminal. The resistance was 17.6 ohms, but to be within specs the manual says it should be 6 to 14 ohms. Does this mean that even though the valve clicked, that it's faulty since it's resistance is out of range? Anyone that can offer help/advice please chime in. Thanks

charge the battery.. when i got my dvd player installed the needles were jumpin all over place.. i had got home parked the car chnaged for work came outside turned iton started drving and all the needles were bouncing up and down then i charged the battery before i took it back and it seemd fine so i didnt go back to the shop.. worked for me u can always give it a try.