98 Volvo weird problem

Hi, you have a power relay problem, is your truck is equipped with std (GM) fuse or Mini little fuse because the power relay are different for both depend of the build date of the truck (February 1998) and ealier have GM style fuse.
Also depends of the fuse style the power relay are in a different location.
Ben

 

Hi, Look at the sticker on the LH door jam the built date of your truck (Month and the year) truck built prior February 1998 have the two big power relay under the tec tray (where all fuses are located),
Truck built February 1998 and later have power relay (3) on the tec tray see label under the top dash cover removed to gain acces to the fuses
(note: those truck February 1998 and later use mini fuse)
Ben

 

check thik wight wires (grounds) running from battery box to cab ground stud (pass side, under hood)

 

I recently had the same issue with my 98 volvo, it was the power solenoid(relay), its located under the fuse panel. Don't trust the shop that diagnosed it as a ignition cylinder, my shop diagnosed it over the phone!