Pricing: Eautorepair. Similar topics. Idle may be slightly erratic while the ECU learns base idle but after a few minutes this will settle down If the engine sounds lumpy running on 3 or less cylinders and the PATS light in your clock flashes with the revs of the engine There are 3 choices of 2. If it is post '94 and has red key, I think she can program it so old key won't work. Try different key: if okay then first key is faulty.
You must have atleast 2 keys stored in the PATS memory inorder to program any keys without diagnostic equipment. Each encoded ignition key contains a permanently installed electronic device called a transponder. If the key code is valid, the PATS control module also grounds the control coil in the starter relay, which moves the contacts and sends power to the starter motor solenoid. During this period, the PATS security warning light is illuminated. Must have two programmed keys in the control module to allow vehicle starting. Posted 09 January - AM. The reason we are here
