Question about 1988 Volvo 240

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88 volvo 240 reverse fuel system problem

My car won't run unless I clamp off the reverse fuel line hose. I have changed the fuel pump, fuel filter, and relay. What could it be? Thanks

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The fuel pressure regulator could be faulty, not allowing pressure to build up in the injector rail and just pushing the fuel straight back to the tank via the return line.

Posted on Oct 25, 2008

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1 Answer

Volvo 240 stalls unless giving it gas


Check the rpm in neutral should be around 800-850, this should drop to 500-550 in drive or reverse.

Mar 17, 2014 | Volvo Cars & Trucks

1 Answer

WHERE IS THE FUEL FILTER ON A 88 NISSAN PATHFINDER


Fuel Filter REMOVAL & INSTALLATION CAUTION
NEVER SMOKE WHEN WORKING AROUND OR NEAR GASOLINE! MAKE SURE THAT THERE IS NO ACTIVE IGNITION SOURCE NEAR YOUR WORK AREA! 1970-83 Carbureted Engines The fuel filter is located on the right inner fender in the engine compartment. It is a disposable cartridge type.
  1. Using a pair of pliers, expand the hose clamp on one side of the filter, and slide the clamp further down the hose, past the point to which the filter pipe extends. Remove the other clamp in the same manner.
  2. Grasp the hoses near the ends and twist them gently to pull them free from the filter pipes.
  3. Pull the filter from the clip and discard.
  4. Install the new filter into the clip. Push the hoses onto the filter pipes, and slide the clamps back into position. Start the engine and check for leaks. Fig. 1: Fuel filter - 1970-79 85851035.gif
    Fig. 2: Fuel filter - 1980-83 85851036.gif
1984-86 Carbureted Engines The fuel filter is located on the inside of the frame above the left rear spring front shackle. Changing the filter is VERY awkward. Since it is in-line and below tank level, fuel will pour from the fuel lines when they are disconnected from the filter. The only way of preventing this, is to siphon all of the gasoline from the tank before replacing the filter. Another possible method is to clamp and plug the fuel line, but this is not recommended because of the danger of leaking fuel or damage which could occur to the fuel line when clamped. It would, therefore, be a good idea to run the tank almost dry before changing the filter. Once the tank is dry, disconnect the fuel lines at the filter, unbolt the old filter and install a new one. Reconnect the fuel lines, fill the tank, start the engine and check for leaks. Fig. 3: Fuel filter - 1984-86 85851037.gif
Fig. 4: Remove the shield mounting bolts 85851162.jpg
Fig. 5: Remove the shield, if necessary for fuel filter removal 85851163.jpg
Fig. 6: Removing fuel filter - always replace fuel line clamps 85851164.jpg
Fuel Injected Engines WARNING
Never attempt to remove the fuel filter without first relieving the fuel system pressure!
  1. Release the fuel pressure from the fuel line as follows:
    1. Remove the fuel pump fuse at the fuse box.
    2. Start the engine.
    3. After the engine stalls, crank the engine two or three times to make sure that the fuel pressure is released.
    4. Turn the ignition switch OFF and reinstall the fuel pump fuse.
  2. Loosen the hose clamps at the fuel inlet and outlet lines then slide each line off the filter nipples.
  3. Remove the fuel filter.
  4. Replace the fuel filter. Always be sure to use new hose clamps. Fig. 7: Fuel filter - 1986-88 VG30i 85851038.gif
    Fig. 8: Fuel filter - 1986-88 Z24i 85851039.gif
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Oct 17, 2010 | 1988 Nissan Pathfinder

1 Answer

Fuel pump replacement


Make sure before you begin you obtain new fuel injection clamps, the tank to pump seal and a small length of fuel injection hose. Also obtain a new filter sock at the bottom of the pump. You may want to ask at the parts counter what size it is; but you'll need a small length of hose regardless of condition. Take extreme care working in the vincinity of gasoline, do not smoke or work near pilot lights or hot work lamps, as you will be releasing vapor that could ignite.
The fuel pump system on these models consists of a pump in the tank. Try to make sure the tank is nearly empty. On sedan models, peel back the trunk lining after removing the left side drain hose for the drip panels. It is secured by a clamp. Remove the 4 10mm bolts which secure the inspection cover.
Remove the negative battery cable.
On wagon models, fold the rear seat back assembly back, lift it up and remove the cover and carpet. Remove the inspection plate.
Either model of this vintage has the pump and sender assembly secured by a large plastic collar. Take care when removing it as it will be very tight and if you need to hammer at it it is best to use a length of PVC pipe and a mallet so that it won't crack if you hit it too hard. Remove the fuel hoses, taking care to avoid spillage by using old shop cloths to catch any residual fuel. Disconnect the electrical connections. Note that the old hose clamps may be rusted solid; carefully cut them off (do not attempt to use a saw or other tool as sparking may result) or soak them in a rust-removing compound. Carefully lift the pump and sending unit up and out of the tank, rotating through 90 degrees on the way out. Plug the open unions of the hoses to prevent debris from getting in.

These models contain the pump by way of a clip. Press up against the bottom of the spring loaded sender to release the clip and remove the pump. Some models may have an accumulator/damper at the top of the pump, it can be bypassed by a section of fuel injection hose and two clamps. You may have to solder on the connectors, sometimes they differ from year to year. Make sure you have the correct polarity when reconnecting the pump, or else it will run backwards. Install the new filter sock by pressing it on the bottom of the pump.

Installation is essentially a reversal of removal, noting to install a new tank to pump seal: Place the seal on the tank first, then place the pump assembly into the seal, as it is quite difficult to fit otherwise. Install new clamps wherever an old clamp was removed. Check carefully for leaks before driving the vehicle, and then install the inspection cover, trunk lining and drain hose.

Jun 23, 2010 | 1991 Volvo 740

2 Answers

Intermittently won't start


Check for clogged fuel filter or clogged fuel lines.

Aug 23, 2009 | Volvo 240 Cars & Trucks

2 Answers

1986 Volvo 240 starts but will die when I increase the RPMs


sounds silly but make sure there isn't a partial blockage in exaust system or a smashed pipe.

May 26, 2009 | 1984 Volvo 240 Series

1 Answer

Where is the fuel filter in my 1992 Isuzu Rodeo?


Look on passenger side frame rail ahead of the rear wheel in a bracket with a fuel line on each end. Before starting replacement-- be sure to release pressure from fuel lines, by removing fuel pump fuse under hood and running engine to use gas from lines. I then remove fuel lines by moving clamps away from fitting so hose can be pulled loose from old filter while it is still in bracket. On top of mounting is a bolt that holds filter clamp in place . After removing clamp and filter from mounting bracket, loosen filter body clamp and slip oout old filter-- then in with the new filter. Then reverse your steps to install filter. After filter is back in place -- reinstall fuel pump fuse, turn on key for a few seconds for gas to refill lines, then start engine and check your installation to make sure you have no fuel leaks at line connections.

Oct 18, 2008 | 1992 Isuzu Rodeo

1 Answer

1982 240 volvo


Hello,

Your engine does NOT have a carburator. Unless the engine was replaced by an earlier one, 1982 Volvo's were fuel injected.

This is an older fuel injection design that is a "constant flow" type system ie. there is a constant spray of fuel while the engine is running. Newer fuel injection systems, including Volvo, are "demand" type systems where fuel is only sprayed through the injectors when the engine electronics signal it to do so.

In any case, this older system is very sensitive to vacuum leaks. Check all your hoses for splits, hardening or connection looseness. Check the seals on each fuel injector (there are 4, one for each cylinder). If they are hard or cracked, replace them.

The later problem was the case on my 1981 240 which had the same problem. New fuels injector seals and the car runs perfect.

Good Luck,

Dr of Motors

Sep 09, 2008 | 1982 Volvo 240 Series

1 Answer

Have changed the fuel filter on our 1985 Volvo 240GL


NOPE, THEY SHOULD FILL UP WITH THE PUMP AUTOMATIC.
MMM. PUT THE SWITCH ON " NOT ALL THE WAY TO START " JUST WHEN THE DASH LIGHTS COME ON, WAIT A MINUTE WHILE THE PUMP FILL THE LINES, DO THIS TWO OR THREE TIMES AND THEN START IT AND SEE IF THIS WORKS. IF NOT LET ME KNOW

Jun 22, 2008 | 1984 Volvo 240 Series

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