So I just bought a 90 240 about a month ago. Ran great then one morning was really hard to start and idles really erratic. Sometimes wont really start. Has a code 1-4-4 Load signal missing to control module.... Any ideas on common problems and things to check that would cause this code to pop up with these symptoms.

 

Mass air meter, idle control valve, rotor-distributor cap,

 

check/replace fuel pump relay, and make sure connections to theECU andICU are ok.