Fuel Problems 93 850? 5 cyl

  • Thread starter Thread starter Happy Trails
  • Start date Start date
H

Happy Trails

My nephew has this vehicle which is stuck at the farm 2 hrs away. I
will go there this weekend and repair it, but I am not familiar with
Volvos.

He said it would stop-go-stop just like it was out of gas, but there
was lots of gas in the tank.

Can someone tell me please:

-where is the fuel filter located?

-is it a mechanical pump or electric one?

-if electric, where is it?

Are there any special tricks or suggestions to troubleshooting and
repairing/replacing these components? He says he bought a new filter
and pump to take with us.

Thanks, Tom
 
My nephew has this vehicle which is stuck at the farm 2 hrs away. I
will go there this weekend and repair it, but I am not familiar with
Volvos.

He said it would stop-go-stop just like it was out of gas, but there
was lots of gas in the tank.

Can someone tell me please:

-where is the fuel filter located?

-is it a mechanical pump or electric one?

-if electric, where is it?

Are there any special tricks or suggestions to troubleshooting and
repairing/replacing these components? He says he bought a new filter
and pump to take with us.

Thanks, Tom
Click to expand...

See http://www.matthewsvolvosite.com/volvo_850.php, Repairs and Tips.
(I'd start by checking the fuel pump relay for bad solder joints - a
common problem ->
http://www.matthewsvolvosite.com/chat/phpBB2/viewtopic.php?p=31037#31037)
 
Thanks for the info, Jarkka.

Turns out fuel system seems okay - I have pressure on rail !

But no sparks ???

So I pulled the coil assembly, with the power transistor mounted.

How can I test that to see if it's good?

Are these usually available at a scrap yard?

Is replacing this the likely solution, or am I going to find out it is
a mysterious fault involving sensors and a computer, hahahaha?

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