when my 850 warms up it dies barley wants to go, however when it is cold it starts right up and will idle perfectly all day long. when it hot its hard tostart and keep running, but when it cools for 10 mins it starts right up and idles fine. but when i try to drive it dont wanna go. no lights indicators come on. please help

 

oh by the way no turbo and no automatic

 

Welcome to the forum.

First, do you have a check engine light? Pull codes and post 'em if you do.

There's a lot of things that could cause your problem so you'll have to do a little digging. First and foremost is to review repairs for Stage 0 (http://www.matthewsvolvosite.com/what-is-stage-0.html) and see what is out of whack.

Keep us posted on what you find.

 

no codes
however when it acted up service lightcame on but was un able to get the computer on it

 

What vjaneczko said and you should ck your fuel pressure, if possible, when it's acting up.

If I had to guess I would think a bad fuel pump relay matches your symptoms..

 

where is fuel pump relay locted in car? and is it best to just replace it ? the car has 170k miles dont know if its everbeen replaceds

 

With so many things that can fail, it's best to test stuff instead of blindly replacing parts - it can add up quickly! I've not had to replace mine yet. IIRC, the relay is under the fuses. Not sure which one but I'm sure it's posted somewhere around here

You can ignore the service light. That only helps the dealerships charge you for scheduled maintenance - which you want to be doing on your own, given the age of the car! I pulled the bulb so I never see it again. I believe on the '95's there's a way to reset it if you don't want to pull the bulb - again, I'm sure the directions are somewhere around here...

 

fuel pump relay is under the fuse panel in engine bay 4 torx screws to remove i believe its # 103

 

Again I concur with vjaneczko; not suggesting you throw parts at any problem w/o diagnosis.

Just saying the symptoms line up with fuel pump relay known failure modes. Your problem may not even be fuel pressure related, but again based on your symptoms, I would start looking there first and try to eliminate it as a possibility.

I've posted many times on how to diagnose fuel pump relay and fuel pump problems on these cars as both are common failure points once they get over the 120K mls point and beyond. Here are some links you should find helpful:

see post #3 here (try bypassing fuel pump relay as described when it acts up)
https://volvoforums.com/forum/volvo-...talling-55849/


post #8 here
https://volvoforums.com/forum/volvo-...estions-55124/


and here's Ozark Lee's famous post on how to repair the relay (if you're a real DIYer); main reason I am posting this link for you is it has good pic of fuel pump relay location at top of post:
http://www.matthewsvolvosite.com/for...ic.php?p=32573

Keep us posted on your progress..