You car has the OBD I diagnostic system. Read about it via the link below. You retrieve the fault codes through the little box somewhere around the LH strut tower. No scan tool is required. (Your car has the Bosch fuel and ignition systems, NOT Rex/Regina. The OBD can store up to about three fault c...

Test the water temp sensor and clean the MAF sensor. Check the electrical connectors for both. If temperature is wrong or air flow wrong, fuel will not be supplied correctly. Maybe remove and inspect the air intake tube between MAF and throttle. These and develop a hole and leak air (lean). volvolug...