Our old, reliable 1989 Volvo just started stalling on us. It starts up and runs fine, for a while, then it stalls and won't start unless it "rests" for a while. It doesn't appear to be electrical. The oil was a low.
Is this an air flow sensor issue? Is that a difficult part to find and fix myself? I have some repair experience (not an expert by any means).
The sock/filter in tank has got trash on it as it runs it pulls to a spot and closes off flow when it sets awhile it pushes off letting gas flow for a time the car will get weak /slugesh befor it dies out spent $1500.00 to find out if it is a wagon take back seat remove screws that hold the board to the floor lift out acess hole is on driver side on hunp take pumpout here not have to remove tank
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when its damp in the air remove the dist. cap to see if there is moisture inside the cap. if so replace the cap and make sure the bolts are tight. check you contacts inside the rear taillight assembly to see if they are rusty or not you may have to clean them with sandpaper.
The platinum wire in your air-mass assembly is shot. This happens with most 240/740 models at least once in the lifetime of the vehicle. Find a good used air-mass meter with the same stock number (50-75 dollars), and replace it---that should take care of it.
P.S. Save your self the money of the rear harness---It will just break again and only serves the rear window wiper/squirter and cyclops light.
perhaps you need a new cap and roter a new spark plug wire set. they don;t like moisture. also check to see if you have any broken or leaking vacuum hoses. the worse case senerio would be that your head gasket is leaking--at cold temps a little antifreeze will enter until everything warms up and it seals shut due to metal expanding. but since you say it's cold weather only--this probably wou;dn't be the case. good luck.
If you can get it running again, get it to an electrical shop where they can test the charging system. If the alternator is still bad, it will continue draining the battery. If it won't run, pull the alternator and take it to a shop that can test it.