Hello everyone, I recently acquired a 1993 240 automatic that had been sitting for a few years. I can't get it to start. what I've done
-Drained old gas and replaced with new
-car will start on ether, so I know it's fuel related
-replaced pink fuse underhood
-checked fuses 4 & 6. Fuse 4 shows power when first keyed on, no power at fuse 6
-checked fuel pump relay, works fine
-main fuel pump will power up when supplied 12v (but not from fuse 6)
-Spark plugs are not wet after cranking, so I know the cylinders aren't getting fuel

and that's where I'm at. Kinda at a loss. I'm not sure if fuse 6 is supposed to have power or not. I was going to replace the fuel filter as maybe it's super clogged, Possibly a fuel pressure regulator, or the screen on the in-tank pump is clogged? Possible ECU issue? Hopefully someone can point me in the right direction.

Hey everyone, late reply, but it turned out the fuel pump was so full of crud it wouldn't pump anything. Cleaned it all out and the car runs like a champ. Thanks for all the suggestions.

I am glad that you found out that you were not getting fuel to the fuel rail!

I am curious to which pump you speak of that you took apart to find the crud? You said you cleaned it all out....cleaned what? I am mystified, which sometimes is not hard for me, (:-)

One is a centrifugal vane pump (turbine) and the main pump is a roller positive displacement design.

Did you just flush them somehow? Or do you mean cleaning (it all) fuel system like the tank, check valves and new filters?

These are crimped together units of which I haved opened before. Most of the time when I opened them they were worn out electrically. The brushes were worn out or a groove in the commutator so deep that I did not feel comfortable trying to repair them.

Again I am happy for you! Thanks for the update most of all!
Phil

If you have a "pink fuse under the hood" there is no wiring to fuse 6. Check it out.
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Art Benstein near Baltimore

Before you criticize someone, you should walk a mile in his shoes. That way, when you criticize him, you're a mile away and you have his shoes.

the black box/Cover Lucid speaks of just lifts straight up to get to the wires underneath.

No voltage to fuse 6 is a problem but I'm wondering if it's your Crank positioning Sensor
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'75 Jeep CJ5 345Hp ChevyPwrd, two motorcycles, '85 Pickup: The '89 Volvo is the newest vehicle I own. it wasn't Volvos safety , it was Longevity that sold me http://home.lyse.net/brox/TonyPage4.html http://cleanflametrap.com/tony/

"sitting for a few years" - how many?

I've had numerous cars that were parked for extended periods. 1st thing you might do is check for fuel pressure at the rail. The basics for me when a car's been "sitting for a few years"

- change the oil
- pull plugs. inspect; squirt some oil into the cylinders & crank
- change the fuel filter
- pull fuses, wire brush contacts w/ solvent
- pull intake manifold grounds, clean, reinstall w/ grease
- Pull fuel sender & pre-pump, inspect inside tank

I did an 87 for a friend ~2 years ago. Had been "sitting 7-8 years". I found

- Sender tube in gas tank was rusted away
- Tank was filled with scale and varnish. Replaced it.
- Fuel filter clogged with jelly
- Rubber hose from tank to main pump had holes
- Main fuel pump ran for a couple of hours and then froze.
- FPR bad
- all 4 Injectors clogged
- Ground wire from battery corroded off at block
- MAS bad
- Hose from MAS to intake had holes at bottom
- Throttle plate stuck closed
- Various other rodent- and corrosion-related problems

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240 drivers / parts cars - JH, Ohio

"-checked fuses 4 & 6. Fuse 4 shows power when first keyed on, no power at fuse 6"

On '92/3 240s, Fuse 6 is the primary power source for the Fuel and Ignition systems.

According to Volvo diagram in Bentley, fuse 6 should always have direct battery power by way of a connection box on left front inner fender. Look for the black plastic box with one larger (Red) wire coming in from battery +, and 4 smaller wires coming from common buss via push-on connectors - one of which goes straight to fuse 6, a guaranteed No-Start.

Disconnect the battery negative, then exercise all of the "push-on" connectors to remove possible corrosion. The power to fuse 6 appears to be carried by one of two Orange wires.


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

"-Spark plugs are not wet after cranking, so I know the cylinders aren't getting fuel"

I think (I'm still with carbs) that the injectors need to be grounded. If so, check the connections of the ground wires to the intake manifold.
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1980 245 Canadian B21A with SU carb, M46 trans, 3:31 dif, in Brampton, Ont.

check your crank sensor

I replaced the crank sensor today, no change.

Try removing the line from the injector rail and jumper the left side of those two fuses together.

The pumps should run fuel up to the rail? Use a clean container!
Check for both quality and quantity.

Phil

Fuel injector relay?
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