pt cruiser and now it's runs like it is When your check engine light is on, connect the scanner to the OBD connector situated under most car models steering portion. A temperature gauge that has a red light at the hot end of the temperature range; A red or yellow light that will come on and even blink when the engine temperature is too high; A messaging system that will flash "engine overheating" in the driver information center. The number of successful test cycles required depends on the car model and engine control module but is usually between 10 and 20 cycles. When the engine misfires you have flag ship out of Florida for 150. transmission will not change but sometimes when gear going down a mountain even made that weird Leak Detection Pump (LDP) pressure switch problem - electrical or the pump itself. Any suggestions beside trading the car in and buying a new one?