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940 Intermittent No Power 900 1993

posted by  someone claiming to be petiboy on  Thu Jun 14 07:11 CST 2012 [RELATED]

Ok, it has been a tough spring !

I am getting an intermittent NO power after the car has warmed up a bit. I noticed this after comming to a stop and then trying to accellerate, the car does not die but their seems to be no power until the accelerater kicks in after pumping the gas pedal a few times.

Volvo is a 1993 940T with 307k on the clock


Things I have done this spring:
-Ruptured heater hose with overheat- fixed with new hose
-New Thermostat, new resevior cap,
-New RPM (crank sensor) fixed intermittent no start
-New Radio Suppression Relay, New Ignition Module
-New Fuel Pumps (both)
-New Fueld Pump Relay


Things I did last fall
-New plugs
-New cap & rotor
-New wires

Anybody got any ideas on what else this could be ?
Any help will be much appreciated











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    posted by  someone claiming to be on  Wed Dec 31 18:00 CST 1969 [RELATED]

    On my 1990 760 turbo, I had two problems that caused this at highway speed:

    Collapsing turbo hose from the airbox to the turbo. Oil soaked and 15 years old took its toll. You could not see it idling in the driveway.

    The second should not effect you but the "fuel system" relay would intermittently fail. Mine was an odd failure in that the relay coil itself would start "breaking up" when warm.



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    posted by  someone claiming to be on  Wed Dec 31 18:00 CST 1969 [RELATED]

    I'm having the same issue, let me know what yuou find.
    Does it only happen under acceleration?
    Got a suggestion to check the TPS which I will do tommorrow.
    Also check the fuel pressure while in motion if you can rig it up safely.
    --
    1999 E320 1994 F150 1989 560 SL 1986 560 SL (deceased) 1988 300 TE (departed) 1994 945T (daughter's) 1988 244DL (it lives!) 1986 242Ti (fallow) 1968 GT500KR (under restoration)



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      posted by  someone claiming to be on  Wed Dec 31 18:00 CST 1969 [RELATED]

      what is the TPS ?



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        posted by  someone claiming to be on  Wed Dec 31 18:00 CST 1969 [RELATED]

        Throttle Position Switch

        http://www.brickboard.com/RWD/index.htm?id=1489862&show_all=1
        --
        Happy Motoring! 92' and 93' 240's past cars "74 140, '75 140, '86 240, '87 240 wagon, '02 S60.



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          posted by  someone claiming to be on  Wed Dec 31 18:00 CST 1969 [RELATED]

          Link was by accident sorry ....
          --
          Happy Motoring! 92' and 93' 240's past cars "74 140, '75 140, '86 240, '87 240 wagon, '02 S60.



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