Fuse, Ground Connections and Connectors
Complete Inspection Of The LH-Jetronic System 2.2Check that ground connections on inlet manifold are correctly connected. Poor connections can cause many different fault symptoms. Also check that the Lambda sond's test socket (green/white) is at the front right fender and is not grounded (applies to the F-engine).
Check Fuses For Pump Relay And Tank Pump
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Check Connectors For Air Mass Meter, Air Control Valve, Knock Sensor, Coolant Temperature Sensor And Injectors.
The connectors should be correctly connected and make good contact.