1985 240 DL wagon - fuel level goes to empty and car dies
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1985 240 DL wagon - fuel level goes to empty and car dies
I have a 1985 240 DL wagon with an odd problem. When I started the car the fuel gauge read correctly, then as I was driving the gauge dropped to empty and the car stalled and almost died, I feathered the gas pedal and the gauge slowly rose to accurate, I was able to get to work. After work the car had to be jumped off, while I was letting it idle it died. I jumped it off again and made it home (less than 2 miles) the fuel gauge was fluctuating slowly during the drive home. I'm at a loss!
About 6 weeks ago I replaced the fuel relay under the dash, the accordian hose on the in-tank fuel pump, and replaced the 25 amp engine fuse. After those repairs the car ran like a champ until a couple of days ago when the above decribed situation occured.
About 6 weeks ago I replaced the fuel relay under the dash, the accordian hose on the in-tank fuel pump, and replaced the 25 amp engine fuse. After those repairs the car ran like a champ until a couple of days ago when the above decribed situation occured.
no mo volvo
Joined: Oct 2010
Posts: 11,289
Likes: 109
From: 37 North on the left coast
well, the fuel sender / gauge has nothing to do with the fuel pump relay.
however, it does share ground wiring back at the fuel tank where the actual fuel sending unit and the in-tank pump are colocated... so I'd check that ground.
I'd also check the condition of the wiring harness under the hood.... 82 or 83 to 87 were Volvo's "biodegradable wiring" era, and the insulation on these has a tendency to crack and flake off the individual wires inside the black sheath bundles.
however, it does share ground wiring back at the fuel tank where the actual fuel sending unit and the in-tank pump are colocated... so I'd check that ground.
I'd also check the condition of the wiring harness under the hood.... 82 or 83 to 87 were Volvo's "biodegradable wiring" era, and the insulation on these has a tendency to crack and flake off the individual wires inside the black sheath bundles.
Thread Starter
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Junior Member
Joined: Jan 2020
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well, the fuel sender / gauge has nothing to do with the fuel pump relay.
however, it does share ground wiring back at the fuel tank where the actual fuel sending unit and the in-tank pump are colocated... so I'd check that ground.
I'd also check the condition of the wiring harness under the hood.... 82 or 83 to 87 were Volvo's "biodegradable wiring" era, and the insulation on these has a tendency to crack and flake off the individual wires inside the black sheath bundles.
however, it does share ground wiring back at the fuel tank where the actual fuel sending unit and the in-tank pump are colocated... so I'd check that ground.
I'd also check the condition of the wiring harness under the hood.... 82 or 83 to 87 were Volvo's "biodegradable wiring" era, and the insulation on these has a tendency to crack and flake off the individual wires inside the black sheath bundles.
Thread Starter
|
Junior Member
Joined: Jan 2020
Posts: 5
Likes: 0
well, the fuel sender / gauge has nothing to do with the fuel pump relay.
however, it does share ground wiring back at the fuel tank where the actual fuel sending unit and the in-tank pump are colocated... so I'd check that ground.
I'd also check the condition of the wiring harness under the hood.... 82 or 83 to 87 were Volvo's "biodegradable wiring" era, and the insulation on these has a tendency to crack and flake off the individual wires inside the black sheath bundles.
however, it does share ground wiring back at the fuel tank where the actual fuel sending unit and the in-tank pump are colocated... so I'd check that ground.
I'd also check the condition of the wiring harness under the hood.... 82 or 83 to 87 were Volvo's "biodegradable wiring" era, and the insulation on these has a tendency to crack and flake off the individual wires inside the black sheath bundles.
no mo volvo
Joined: Oct 2010
Posts: 11,289
Likes: 109
From: 37 North on the left coast
you probably will have all sorts of erratic problems with the wiring harness throughout the engine compartment as time goes forward unless the main engine and the ignition harnesses have been replaced. they tend to fail where you can't see them, inside the black covers.
https://www.240turbo.com/volvoharnesses.html has fresh replacement harnesses being custom made in the Netherlands or something for most years but I'd probably only bother to do this for a car otherwise in very nice condition.
https://www.240turbo.com/volvoharnesses.html has fresh replacement harnesses being custom made in the Netherlands or something for most years but I'd probably only bother to do this for a car otherwise in very nice condition.
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