420A 1999 GS; Having electrical problems

[idgtfts]

i got the car to start by giving it gas while cranking just now but that doesnt always work, and this problem has been going on for a while. car hasnt died on me while driving, but usually will die right after i park and turn off my car. jumping it doesnt always work. problems started about 6 weeks ago, dissapeared for the past 3 weeks but just started again the other day. I got my battery, starter, and alternator all tested on multiple occasions. at different oreilly’s, autozones, and once by a random friendly mechanic at the gas station who happened to have an alternator tester.

 

[Mello]

Test your coolant temp sensor. If they're off or not reading correct they can cause start problems including a no start.