1. Test have to be carried to determine if the vacumns are working. For the coorect installation, you would have to get a diagram or another vehicle to visually confirm.
2. The cooling fans works with the AC turned ON and does off when the AC is turned OFF. When AC is not turned on, they would only operate when the fan thermo switch is turned on when the coolant temperature reaches the preset temperature of the fan switch. If the fans do not work with AC off and engine overheats, it could be a faulty fan switch or its control.
3. When check indicators illuminates, an error has been detected and to confirm the source, the trouble codes have to be retrieved. It can be anything from a disconnected wire to a bad controlo unit. Get the trouble codes retrieved at Autozone, they provide free scanning services.
4. When the CEL is indicating, performance and fuel consumption would be affected, get it resolved first.
Sunday, December 13th, 2009 AT 2:46 AM