Ok, after much work going into trying to fix this problem I posted earlier on this board, there is one thing I want to check and rule out for sure. Problem, I can't find the specs for my car.
I have a 93 850GLT with 180K or so miles.
What I need to know is the regulated and unregulated fuel pressure that I should be receiving at the fuel rail pulled from the schrader valve. What research I have found so far seems to indicate I should have 43.5psi at the injectors so I also assume that's what I should be recieving at the shraeder valve. If anyone can help it would be greatly appreciated. Thanks.
93 850 GTL Fuel Pressure
This topic is in the MVS Volvo Repair Database »
850 Fuel Pump Relay Capacitor
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Ozark Lee
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Here is the procedure from the manual.
Fuel Pressure
1) Before disconnecting, cover fuel line connector using shop
towel to absorb any fuel spray. Connect Fuel Pressure Gauge (5011)
between fuel line and fuel rail. Seal free end of hose using Plug
(5266) or use Fuel Drainage Unit (981 2270, 2273 and 2282).
2) Lift cover on central electrical unit located in engine
compartment and remove fuel pump relay. See Fig. 1.
3) Connect a jumper wire between relay terminals No. 1 and 3.
See Fig. 2.
4) Turn ignition on. Fuel pump should start. Fuel filler
cover can be removed to determine whether main pump is operating. Fuel
pressure should be about 43.5 psi (3.06 kg/cm). If pressure is too
low, pinch return hose by hand and check whether pressure rises. DO
NOT allow pressure to exceed 86 psi (6 kg/cm).
5) If pressure rises rapidly, pump and lines are okay.
Replace pressure regulator and recheck line pressure. If pressure
rises slowly, fuel filter, fuel pump strainer or fuel lines are
blocked. If pressure does not rise, fuel pump is probably faulty.
6) If pressure is too high, remove jumper wire between relay
or fuse terminals. Remove return hose from pressure regulator. Blow in
pipe. Remove vacuum hose from pressure regulator. Blow in pipe. If
both hoses are open, pressure regulator is defective. Replace
regulator and recheck pressure.
The jumper wire goes between the sockets associated with the pins labeled 15 and 87 on the relay itself.
...Lee
Fuel Pressure
1) Before disconnecting, cover fuel line connector using shop
towel to absorb any fuel spray. Connect Fuel Pressure Gauge (5011)
between fuel line and fuel rail. Seal free end of hose using Plug
(5266) or use Fuel Drainage Unit (981 2270, 2273 and 2282).
2) Lift cover on central electrical unit located in engine
compartment and remove fuel pump relay. See Fig. 1.
3) Connect a jumper wire between relay terminals No. 1 and 3.
See Fig. 2.
4) Turn ignition on. Fuel pump should start. Fuel filler
cover can be removed to determine whether main pump is operating. Fuel
pressure should be about 43.5 psi (3.06 kg/cm). If pressure is too
low, pinch return hose by hand and check whether pressure rises. DO
NOT allow pressure to exceed 86 psi (6 kg/cm).
5) If pressure rises rapidly, pump and lines are okay.
Replace pressure regulator and recheck line pressure. If pressure
rises slowly, fuel filter, fuel pump strainer or fuel lines are
blocked. If pressure does not rise, fuel pump is probably faulty.
6) If pressure is too high, remove jumper wire between relay
or fuse terminals. Remove return hose from pressure regulator. Blow in
pipe. Remove vacuum hose from pressure regulator. Blow in pipe. If
both hoses are open, pressure regulator is defective. Replace
regulator and recheck pressure.
The jumper wire goes between the sockets associated with the pins labeled 15 and 87 on the relay itself.
...Lee
'94 850 N/A 5 speed
'96 Platinum Edition Turbo
Previous:
1999 V70XC - Nautic Blue - Totaled while parked.
1999 V70XC - RIP - Wrecked Parts Car.
1998 S70 T5
1996 850 N/A
1989 740 GLT
1986 740 GLT
1972 142 Grand Luxe
'96 Platinum Edition Turbo
Previous:
1999 V70XC - Nautic Blue - Totaled while parked.
1999 V70XC - RIP - Wrecked Parts Car.
1998 S70 T5
1996 850 N/A
1989 740 GLT
1986 740 GLT
1972 142 Grand Luxe
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