Question about 1988 Volvo 740

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Can I change the fuel pump and relay on my 1988 Volvo wagon 740 myself or do I have to have a mechanic do it?

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Dropping fuel tank is not that hard, drive up on ramps for clearance and unbolt straps, be careful not to break fuel line when lowering tank, good luck

Posted on Dec 30, 2010

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Posted on Jan 02, 2017

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1988 Volvo 740 GLE non turbo. Hard start then randomly stalls after normal driving. Sometimes it drives for hours and sometimes it stalls in a few minutes. Just changed the fuel pump relay and the...


I'v had that same issue. It turned out the be the fuel pump. I replaced the one in the tank as well as the one under the driver seat under the car.

Aug 13, 2017 | 1988 Volvo 740

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Not starting after replacing fuel filter and tune-up


I had the same problem with a 1989 Volvo 740 GLE station wagon. I did the same thing you did. But this time I talked to the local Independent Volvo service shop, not the dealer. The problem turn out to a bad fuel pump in the gas tank. You can replace it from inside the back of the station wagon. Just remove the floor panel to access the top of the fuel tank. But before you do; note that there are two fuel pumps, one inline underneath the car on the drivers side, and the one inside the gas tank. Before, you replace any of the fuel pumps check the fuel pump relay behind the astray on the left side. It could also be a bad relay.

Apr 09, 2009 | 1989 Volvo 740

1 Answer

1990 volvo 740 wagon shuts off while driving


sounds like you have a computer glitch. i would take it to any auto shop and pay 50 bucks so they can take a look at your e.c.u. (engine control unit) we had a similar problem a few years ago with our 1990 volvo 740 gle 2.3l station wagon. it was a glitch with the computer. got a mixed signal with the mass air flow sensor.

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1 Answer

1988 Volvo 740 cold condition, started short, cannot start again


Check the fuel pump fuse and fuel pump relay first, before replacing the fuel pump. The fuses and relays are behind the the ash tray, The fuses are labelled. The relay is on the left side of the relay rack, closest to the big round bulb out sensor. But before that, how about pouring some gas line anti-freeze or fuel injector cleaner into the tank?

Dec 23, 2008 | 1988 Volvo 740

1 Answer

Fuel pump


Have you checked the fuel pump relay and fuse? That lives in the relay/fuse panel under the radio, behind the ash tray. I always carry a spare relay and fuse. The pump might have taken out both of these, The fuel pump relay is located in the third row, toward the firewall, next to the last relay on the right. The first in that row is a big relay for the headlights. The fulk pump relay is located between that and the one on the right. There are only three relays in the last row.

Oct 21, 2008 | 1988 Volvo 740

1 Answer

No air coming through vents and blower is OK


your blower motor might be damaged.replace the blower motor of the air con.

Aug 20, 2008 | 1988 Volvo 740

2 Answers

1988 volvo 740 problems


Here is what I found was the problem with my 1988 740 GLE Wagon.
Remove the phillips screw that holds the cigarette lighter in place. Now remove the ash tray. Next, pull the storage tray and cigarette lighter assembly and lay to the side.
You will see two trays, one with the fuses and one with the relays. The one you want to look at is the relay tray.
On the far left side of the tray and the 2nd relay from the back is the relay that engages the ignition when you turn the key to the start/ Run position.
It is very likely that is simply a bad connection where the relay pprongs plug into the socket in the relay tray.
wiggle and pull up on the relay assembly until it comes out of the tray.
Now just tweek the prongs slightly on the relay so they will make a firmer contact in the socket.
Now put the relay back in the same position it was in originally. Pull it back out and put it back in a couple of times to clean any corrosion oin the contact prongs.
Try to start the car now. This will probably correct the problem.
If not you may have to replace the relay because it may be defective.

Jun 16, 2008 | 1988 Volvo 740

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