Question about Volvo 240
When the ignition is first turned on, the relay pulls in for about 1 second then drops out. When the engine is cranked over, the relay pulls in again and stays in while ever the engine is running. The mechanism for this is circuitry between terminal 31b and the 555 which detects pulses from the ignition unit output and causes the relay to remain operated while the pulses are present.
You have a ignition (electrical problem) more than likely.
fix/check fuse 6 first for bad connections.
hope this helps a little.
Posted on Dec 27, 2018
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Posted on Jan 02, 2017
SOURCE: 1985 Volvo 240 no fuel no spark
well first the fuel pump relay is bad, that is easily replaced. next you have no spark. the first thing you do is take the cap off the distributerand crank the engine. if it spins that tell syou thyat at least the tang or gear on the shaft of the distributor is ok and not broken. next thing is remove the #1 plug and use a 1/4 drive extension 6" long and turn the crank by hand until the #1 cylinder is top dead center(put the extension in the hole of head where the plug was and you should feel the top of the piston also make sure you can feel the top of the piston with half the extension this way you don't drop it in the cylinder with the piston at TDC(top dead center) the rotor of the distributor should be pointed at the #1 firing position. IF it does not that means your timing is off and you need to retime it by taking off timing cover and either replacing the belt/chain or gears. now if you do not have a distributor and you have a coil pack there could be only 2 things that won't give spark. either a bad coil or your altenater is bad(the battery is responsible for starting not running the vehicle like alot of people assume. the altenator energizes the coil which inturngives spark. hope this helps you please rate this thanks
Posted on Sep 07, 2008
If you have put direct power to the fuel pump and it still wont work, then get an electrical test unit, test light, and ohmmeter, and check to see if there is a break in any of the wires, and that you have got a good ground connection from the ground feed.
After confirming you have good connections, then it will be obvious that the fuel pump needs replacing.
Posted on Jan 29, 2009
it is likely either the Crank position sensor, or the ignition module. (module is in the left front fender area behind the turn signal)
Posted on Mar 26, 2009
could be a bad earth or [ground]
the power wire ma be brocken or have a loose or dirty connection
you neeed to trace it along its lenght to determine the fault!
so start at the pump & work back
Posted on Jul 20, 2009
SOURCE: fuel pump- 2002 GMC Sierra
The fuel sending unit only controls the gas guage not the fuel supply to the vehicle. The pump is twelve volts. If you are not getting twelve volts on the PUMP wires check the fuel pump relay and the key circuit to it. If you have to cycle the key three to four times rapidly to get the vehicle to start check the fuel pump pressure at the regulator for manufacturer specs. An injector stuck open will also cause same problems you are describing.
Posted on Jul 30, 2009
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May 10, 2017 | Volvo Cars & Trucks
If the main fuel pump doesn't begin running when jumped (you should definitely hear it humming), you either have a faulty fuel pump or faulty wiring to the pump (bad wiring is really common under an old 240, near the pump). This test of course assumes your battery is good.
If one of the fuses blows during this test, the pump circuit wiring is shorting to ground somewhere between the fuse panel and the pump.
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