Hello, I am having a problem with my Volvo! First let me say i am in the survival market not the stock market lol..
My Volvo is real important for me and it looks like i may need a fuel pump? I am handy but not a mechanic.
My car will start(barley) but after a few blocks it will not start again.. My local garage says i need a fuel pump and that it took them awhile to find where it is!. They are great but not a euro car specialist.
Any suggestions are most welcome as i cant afford much money and desperately want to keep my car!
From the sound of how it starts it does indeed seam to be fuel related.

 

most 940s but not all have dual fuel pumps. there's a pre-pump in the gas tank, accessible via a access port behind the back seat (under the deck), and there's the main pump under the car, just in front of the gas tank, on the right side of the drive axle, along with the fuel filter.

if the car has REGINA REX injection, it probably only has one pump in the tank, but some have both.

if the car has BOSCH injection, it *MIGHT* only have one pump in the tank, this configuration was only seen on the last couple years of 940s, of which yours is one.

IF you have the single pump version, the pump is a totally different part than the tank pump for the double pump. you gotta get the right kind.

my 1992 dual pump 740 turbo wagon ran reasonably well with a bad tank pump as long as it had at least a third of a tank of gas. when it got under 1/3rd, the power was really lacking at heavier throttles, and the whole time, the main fuel pump sounded like it was straining. when I replaced the in-tank pump, it ran MUCH better, the main pump got quiet again. good thing, the main pump is expensive.

its all repairable by someone with tools and reasonable mechanical sense and patience.

there's also a fuel pump RELAY that can be flakey and cause fuel pump problems. this is much easier to diagnose and fix.

some tips...
Fuel System: Pumps, Relays
Volvo Fuel Tank Pump/Sender Replacement

 

Hi Thx for the reply,
I have talked with the shop and here is the skinny.
They said i have a fuel pump on the rail (i guess that is on the side of the car)
and one in the gas tank.. The one in the gas tank is faulty and to expensive for me to pay to fix.. They told me sometimes they have to hit the gas tank with a hammer to get it going. Does this make any sense?
The car has been in the shop since i first posted and looks like i may have to try and find the part in a second hand market(not new from volvo)...

I would like to try and fix it myself but am not sure which part to get?
They are telling me it is a 5 or 6 hundred dollar part plus labor,
They also told me they had the pump out of the gas tank and fixed a few of the connections but it still is not working right. So i am guessing that it is not physically inside the gas tank>?
Any help on what part i would need would be great! Actually i have no idea where it is yet but i have a feeling i am going to find out lol
thx

 

there's three different engine configurations in a 1994 non-turbo 940, the B230F LH2.4 (Bosch), the B230FD "Pulsair", and the B230F "Regina". theres at least 3 fuel pump combinations, dual pump bosch, single pump bosch, and single pump regina.

the regina single in-tank pump complete assembly is $400 at FCPEuro, but the pump itself is only $115 and its quite simple to replace once you have the assembly out of the car. the in-tank pump for a dual pump bosch system is about $40

Volvo 940 Fuel Pump Parts | FCP Euro

 

93 940 Regina wagon---
I am having issues as well with a fuel pump, how will I know to order the whole assembly, or just the in-tank pump itself? I saw the intank pumps for my car selling for around 60 at o'reily auto...

Fuel Pump - 1993 Volvo 940 | O'Reilly Auto Parts

My symptoms are bogging down at times on freeway, and power becoming non existent
-Did I get lucky for once and the part to correct this is actually only 60 dollars?

 

regina uses a completely different in-tank pump than Bosch systems, they are not interchangable.

the real Volvo brand regina pump is $139.
https://www.fcpeuro.com/products/vol...-940-3507736oe

offbrand chinee pump is $50
https://www.fcpeuro.com/products/vol...na-oem-3507736

oreally is probably selling an offbrand chinee pump.

 

Far from convinced that the problem is the fuel pump... Have to do a lot more checking before doing the pump--I would, anyway. The shop you are dealing with doesn't sound competent with Volvo.

 

indeed, before going to the trouble of replacing, do a simple fuel pressure test, if the pressure is good, the pump is fine.

 

I just did the pump on my '94 940 REGINA wagon. If you've got a pump on the rail next to the fuel filter under the rear passenger drivers side, I think about halfway between the axles, it's probably a bosch car. Lucky you... hopefully.

I'm disabled and low/no income so I know about fixing Bricks with limited funds. I'd be happy to help you walk through what I did,

I had LOT of help from Pierce and Lev and many of the other knowledgeable folks but this is pretty fresh in my mind. I have severe spinal damage and brain/cord lesions with rare neurological disease, and I was able to do mine, so if you've got mechanical ability.

I would check the "schrader" valves on your fuel line starting with the one on the injector rail. You unscrew a cap, and it point down, you'll need something to push on the small pin, and fuel SHOULD come out of there, that's just to see if your rails are getting fuel. There are others, there's one between the pump and the filter on my car, but I have the regina pump.

I think starting with diagnostics as has been suggested is key. I did checking then replaced relays, etc. The radio suppression relay is also key in powering the fuel system. I'm fairly sure it's the same for the Bosch and Regina cars, Pierce would know better than me.

You can pop the cap off of the fuel pump relay, and when you put the key in to the ignition just before you'd turn the car over to start, you should hear the pump, but you'll also see the relay close shut before the car starts to prime the pump.

The fuel filter could be a cause too, my tank ran almost dry, which probably didn't help the situation or the pump life, but I thought that maybe it got clogged so i replaced it too. It was indeed the pump, and if you get to that point you'll need to remove the back cover and get at it. I have XXXL size glove hands and I did it, but I've got some tips from doing this to get that damn gasket off and back in. You'll see... I think even experienced mechanics utilize profanity as a tool when doing that circus act...but hey if I can get my mitts in there and do it you can.

Mine is purring like a cat and just passed emissions with flying colors. And my fuel system for the most part is brand new back to front. Hope this helps, check those valves, they're just like the ones on your tires but metal with screw on caps, they may not look familiar to you the first time.

 

This is all fine IF you needed a fuel pump but in this case the symptoms the car has may be to another issue altogether. So... may be a new tread?

 

Thank you all for input. If it is the pump, will the chinese/aftermarket off fcp do the job? I will have fuel pressure checked first, I may not be describing my issue accurately enough, my symptoms seem to depend on level of fuel.. and appear irregularly. I have heard strange buzzing before and I heard that is a sign of a failing pump, and when driving it literally feels as if fuel is struggling to get to the engine at times. I originally thought maybe clogged, cracked old injector/o-ring seals, but from looking further into it I do not think driveability would be effected so much by just a clogged injector. Also the prev owner was not too up to date on maintenance and waited until things were shot before taking it in to be fixed and usually to the dealer. Leaving me to believe they would not have replaced the fuel pump... Plugs and wires, rotors, distributor cap all have been replaced within about 6 months for what its worth

 

my experience with chinese aftermarket parts is they range from partial to complete crap. the 'good' ones will probably work for a few years, the not so good ones won't work hardly at all. whereas the original fuel pumps on these cars typically lasted 20 years and 200K+ miles.