Can anyone point me to the location of the fuel pump relay on my 1995 940 (Bosch coil)?

The (well-maintained w/ 160k miles) car was taken on a 300 mile round trip (150 miles then sat for a week then the return 150 mile trip)and ran and started great throughout. The following morning after the car sat all night my wife went to start it and it started and ran for less than a second and stalled and then would not start (it turns over normally) again. If it sits for a period (overnight) it will again start and run for a second or less and stalls, and then it just turns over and won’t start at all. I am hoping it is the fuel pump relay and not one of the fuel pumps. I’m just not sure if the relay is behind the ashtray, because I can’t seem to locate it under the hood.

Any help would be greatly appreciated……

Again thank you all for the info…I’m going to return the white relay and retrieve and replace this small blue one….i have that nagging feeling that it quite likely is the pump itself that is the problem. Mainly because there was no warning signs before the no-start and after the car sits overnight the way it will fire up and run for a second or so.
Thank you again all!

I love my 940, miss my 140s, 240s 740s and love-hate my 99 V70XC---
the more they upgrade the plumbing, the easier it is to stop up the drain….so I’ve heard and agree.

Your symptoms are very consistent with the problems I had with that same small blue Volvo (Hella) relay in my '95 940 NA. No amount of re-soldering helped -the solenoid coil was gone. The local yard said they rarely went so I got a used one (green Hella, otherwise apparently identical to the blue one) and have had no problem with it since. Beware that a failed relay can often be associated with a worn fuel pump as the increased current draw can fry the relay. Indeed, the fuel pump failed in this car about a year or so later. I first thought it was the relay again, but using a jumper in the relay socket confirmed it was the pump. You can do this using a jumper in the relay socket between socket pins 3 and 4, where relay pins 87 and 30 would insert. If you go for a replacement pump, pay the extra bucks and go for a Bosch, not the wimpy little aftermarket ones such as the Hella (Walbro) one listed as "OEM" (that will be OEM spec, not OEM supplier). They work okay, but my experience is they don't last as long and the effort to get the sender out of the tank makes the savings not worthwhile. This a chore you don't want to do every 2-3 years, just as you've forgotten the details of how you last did it. If you want to stay with your existing pump for a while longer then perhaps remember to keep the tank mostly well filled rather than always close to empty as that eases the load on the pump. Good luck.
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Dave -940's, prev 740/240/140/120 You'd think I'd have learned by now

Although I generally concur about cheap aftermarket parts, I've been running a Tre Performance fuel pump in my two 240s for a couple of years now, with no problems. They seem well made and of good quality. Only problem: they don't come with a check valve, but I've never found that to be a problem.

FWIW.

Monty
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Past: '79 245, '91 240, '88 245. Current: '90 245, '83 245, '95 940

I concur with Dave. After having two cheapie in tank pump pumps die within a month or so of useage I chose to go with IPD's Upgraded in tank pump. Its slightly longer so some minor modification of fuel hose and mount was needed but its still running 2 years later. Not sure how much extra volume it pumps(nor that its needed) but its Bosch and its bigger.
http://www.ipdusa.com/version.asp?strPageHistory=category&numSearchStartRecord=0&strParents=69,258,336&P_ID=412&CAT_ID=336&V_ID=1018

According to the Volvo wiring diagrams, the 1995 NA uses the square 5-pin relay mentioned in posts below. I think it might be either a Blue or Green Hella brand.

The 1995 Turbo still uses the familar white-cased rectangular 6-pin relay, incorrectly labeled "Fuel Pump" in the following FAQ diagram:

Both types control the pump and are are identified as, "Relay, fuel injection" in the diagrams.



--
Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.

Dear norEast,

Hope you're well. The fuel pump relay on 94 and 94 940s is a bright blue cube (1"). It is located on the main relay panel, behind the front center console ashtray. It is in the middle of the row, closest to the passenger compartment. It should be marked "Hella".

If the fuel pump is the factory-original unit, with 160K miles, then it is about due for replacement. The 1995s have a single, in-tank pump. See the FAQs for the procedure.

The fuel injection relay (formally: the radio interference suppression relay) is - on non-turbo models - a very dark brown rectangular unit, mounted on the inner fender wall, just to the rear of the battery. This relay controls the flow of power to the fuel injectors.

It is a good idea to carry in the glove box, spares for these relays.

Hope this helps.

Yours faithfully,

Spook

Thank you to all for your responses.
They were helpful in my quest for information gathering but I still am unable to locate that particular fuel relay…..

I purchased a “fuel pump relay” from a long running, reputable and dedicated Volvo shop. The one they sold me was the white rectangular, six prong K.A.E – but I now find that has no home in this 95 940 non-turbo; either behind the ashtray console nor under the hood. Also, under the hood there is only one black relay on the right side, aft the battery.



thanx again

Not wanting to contradict Spook or create confusion, the fuel pump relay in my 1994 945 is in the front row, right side, closest to ash tray, as viewed from driver's seat. It is green and cube shaped. This green relay is made in Portugal, Volvo PN 9494787. Most on-line vendors will sell you the tall, white FP relay, even if you specify late model 940. I have a pile of the white ones so acquired.

Chris in NE FL, '94 945

Thank you chris…but there is no green relay in the relay tray….

there is a small (approximately 1”x1”x1”high) blue one to the far right (passenger side) position in the front (closest to the shift lever) row. In the immediate left position of the front row is a black (1”x 1” x 1”high) with the letter “J” on it, then second, a silver (1”x1”x1”high) with what seems to be a hand written (black felt tip marker) “K”, then in third position is a larger (rectangular 1”x 2” x 1” high) black relay and then finally the 1”x1”x 1”high blue (made in Spain Hella/Volvo #9130270) to the far right….the location where the large white one should go (according to the photos I’ve been seeing) in the second row is empty….

All sizes I post are approximations

That part number, 9130270, is listed as the fuel pump relay in the "Quick Reference Parts Catalog" published by Volvo. It's listed as the FPR for 1994-on B230F and B230FD.

"...the 1”x1”x 1”high blue (made in Spain Hella/Volvo #9130270)"

That's your "pump" relay, per part #. As I said above, it could be either blue or green. I see it identified in a wiring diagram PDF, but can't post from it.


I took a screen shot and put it in photobucket. Copy Below.




--
Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.

Here's another reference pretty much saying the same thing.

What I notice is the 9130270 is used in several functions, so on this car the fuel pump (injection) relay is just a generic cube relay instead of a special design for pumping fuel and injecting it. This means whoever makes it may not keep to a color convention for the case.

vadis page
--
Art Benstein near Baltimore

Q. Half of all Americans live within 50 miles of what?

A. Their birthplace.

Dear Art,

Hope you're well. The factory-installed cube-format fuel pump relays made by Hella - installed in 1994 and 1995 cars B230FD endgines - were bright blue. They bear a Hella number: 003 520-52 and a Volvo #9130270. Hella later made these relays with a green case, with number: 003 520-25; as these were not made for Volvo, there is no Volvo number. These numbers are molded into the plastic.

Hope this helps.

Yours faithfully,

Spook

Our 940 (California market, B230FD) has the "blue cube" Hella-made-in-Spain fuel pump relay, as Spook described. In my Green Book wiring diagram for the car, this relay is shown with an internal diode across the coil.

I'm not an electronics guy, but I believe this is to prevent voltage spikes from the relay coil from feeding back into the ECU, which triggers this relay. Could be the other part no. relay is identical, with diode, but it would pay to make sure.
--
Bob: son's 81-GL, dtr's '94-940, my 83-DL, 89-745(V8) and 98-S90. Also 77-MGB and some old motorcycles.

They bear a Hella number: 003 520-52 and a Volvo #9130270. Hella later made these relays with a green case, with number: 003 520-25...

If the latter were not made for Volvo, how do we know the part number difference only reflects a color choice or end user (customer)? Are you looking in a Hella reference?

I'm very well, thanks. Trust you are too. Somehow, at the rate rust is attacking our 240s, I expect I may, someday, own a 940 of such late vintage. With all the modern plumbing. :)
--
Art Benstein near Baltimore

The friars were behind in their belfry payments, so they opened up a small florist shop to raise funds. Since everyone liked to buy flowers from the men of God, a rival florist across town thought the competition was unfair.

He asked the good fathers to close down, but they would not. He went back and begged the friars to close. They ignored him. So, the rival florist hired Hugh MacTaggart, the roughest and most vicious thug in town to persuade them to close. Hugh beat up the friars and trashed their store, saying he'd be back if they didn't close up shop.

Terrified, they did so, thereby proving that Hugh, and only Hugh, can prevent florist friars.

Dear Art Benstein,

Hope you're well. I compared the diagrams molded into the case of each relay. The only difference, is a "+" next to the "86" on the green case, , which "+" is not present on the blue-case item.

Further, I put the green-case relay in my car, and all seemed well.

While the green-case item is listed in Halla's 2008 catalog, I cannot find a Hella source with the blue-case item.

Hope this helps.

Yours faithfully,

Spook

That is very helpful. It lends credence to Bob's theory one has diode protection and the other does not.

You would be able to tell for sure by opening it and looking. But if you didn't want to do that, I think an ohmmeter, on the RX1 scale should show a difference when swapping polarity of the probes on the coil of the protected unit. The "I think" part depends on my recollection these relays have coil resistances exceeding what the diode would read in forward bias.

Either relay would work, but of course the one with the diode would afford flyback protection to the ECU circuit driving it. All of the Bosch ECU's I've looked at in Volvos internally include that diode protection, but it never hurts to have more. In that respect, the green one might be better.
--
Art Benstein near Baltimore


Don't be irreplaceable. If you can't be replaced, you can't be promoted.

Many thanks again to you all…I’ve picked up on some useful information from your many responses. Because of a great Volvo shop in Ithaca NY I was afforded the opportunity to utilize a replacement blue 003 520 52 pump relay and a black 2.102.100 injector relay……same symptom; first daily turn over, start and one second running time, then she’s done until the next first daily start……..So now I have the in tank pump replacement to consider…..
Thank you again for taking the time to help me out…..

I "think" the 1995 relay is not the typical white cased one most of us are familiar with in the 1985(?) through 1994.

It is a blue cube and is approximately 1x1x1 inch. I am again not sure but would guess it is behind the ashtray.

Randy

I believe the relay you seek is call the fuel injection relay and it is located behind the ash tray. The FAQs section shows a picture that details which one it is and how to troubleshoot the relay.

Cheers

Seth