My daughters 850 1996 NA Volvo wagon...is killing me..intermittant shut down and dropping her at the side of the road...then it won't start for an hour or so and then it will start. I had it all weekend and Monday ..it was fine..drove it all over the palce and today it died on her..replaced cam sensor, speed sensor...no codes at present. HELP.

 

Change the fuel pump relay. I think they should be changed every 10 years or 150,000 miles.

 

If you can't find anything else I agree with tossing the fuel pump relay at it especially if it starts after a period of cooling down.

One thing though, when you say won't start does it still crank like normal ??

If it's not cranking it's a whole different animal.

This link shows where it's located:
http://www.matthewsvolvosite.com/for...pic.php?t=9681

http://www.matthewsvolvosite.com/for...hp?f=1&t=45936

http://www.matthewsvolvosite.com/for...?p=31037#31037

 

my best bet would be the fuel pump relay. l had the same problem with my 1994 volvo 850, never knowing it was the pump relay. knew what the problem was after trading it in for my red 850.

 

Here is mine before pinpointing the fuel pump relay. You will see it start then die, start then die then the pressure holds and it runs.

 

I have an extra one in the parts car....I will replace in the AM...will lwt you know what happens..I also replaced the ignition switch electrical section...It never dies when I drive it...she must have bad Carma....LOL...thanks for the help volvo dudes..

 

Well....It wasn't the fuel pump relay...Under the removable shroud on top or the radiator there is a light green relay that controls power to the injectors....The relay was fine , but the plastic block connector was falling apart...did a temporary fix and it has been fine for the last 3 days...Think this must have been the problem...I did replace the Fuel pump relay...didn't help...at least not this time...Hope someone can fix thier intermittant problem using this info...

 

Cool, glad you found the bad connection. Thanks for updating the thread.