electric windows dont work UNTIL ive driven 3miles or roughly 5minutes. doesnt matter if it idles for 5mins in garage or drive it 3miles down road. every morning before work and every evening after work. any ideas???

 

What car is this? Do they barely work when they do? May be poor power supply coupled with dirty window switches. How old is the battery?

 

88 740, no, they work perfectly when they start, dont know how old battery is, its charging fine tho, every other electrical device works fine. its literally like it has a sensor or a switch or something

 

Checkout my write-up in cleaning the switches.

https://volvoforums.com/forum/volvo-...71/#post284368

 

Good write up burn stains, will try this weekend. Post back my findings, thanks.

 

ok, checked switches last night, supprizingly clean. however there is no +voltage at switches on yellow/red wire until approx 5mins, then it just appears. is there a relay that mite have a high resistance open in it by chance or the computer doing something weird??

 

What is the condition of the fuses? Try spinning them when the windows don't work. They may be corroded.

 

its fixed! first thing this morning, went out to car and no power to switches AGAIN. while operating switch in the window down position, i tapped on the window relay behind ashtray and BAAAM, the switch was now energized. plan on replacing relay. thanks for your replies and help

 

Never fails to be just an electrical issue on a 240, glad you found it and didn't go blindly replacing window motors and alternators...