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Odd Problem Still Continues 700 1989

posted by  VolvoSteel on  Sun Jan 24 19:10 CST 2010
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last visit: Sun Mar 23 21:28 CST 2014
[RELATED]

1989 780

I am having a issue where when under medium boost i get a slipping type motion out of the car. i originally thought maybe it was a fuel delivery issue or turbo but no luck there. Basicly ( downhill any slope 1 degree or 12 degree ) under hard boost you can feel this slip like there isnt enough fuel, car kinda bucks lightly, now uphill same thing but happens at medium boost or higher car just doesnt want to keep going it will if you push the pedal harder and the turbo is assisting more at this point. here is what has been done to the car since i have owned it i do not know its history. IRS Rear End Converted To Shocks via IPD conversion kit. No Smoke From Rear. Tach Holds Steady During Issue. Express Yourself Here Im Getting Ticked I Cant Get This Car Perfect!!!
Bad Rear End? Bad Tranny? Turbo Hoses ( Seem Solid )? anything. See Below For Item's Tried Or Replaced!

Known Issues

ABS In Failure Mode

Tried / Replaced Items

1993 B230FT Rebuilt Long Block
Rebuilt Turbo ( Very small crack near wastegate accoring to rebuilder )
New Fuel Pump
New Fuel Filter
New ECT
Used Injector's and Rail
All Vac Hoses Replaced
Resealed With Bushing Tranny ( Not Rebuilt )
New Center Support Bearing
New Engine Mounts And Tranny Mount
Used AMM
Cleaned IAC But Very Old
100Amp Alternator With New Bearings
New Harmonic Balancer
New Water Pump
New Thermostat
New Cap And Rotor ( Dist Original With Unbroken Plug In Rear Did Not Have Much Play)
Catty Was replced with Aftermarket prior to my purchase ( Its small )
New Oil Pressure Sendor







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    Odd Problem Still Continues 700 1989

    posted by  RobCooper on  Mon Jan 25 06:28 CST 2010
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    last visit: Tue May 13 17:31 CST 2014
    [RELATED]

    Had a very similiar issue after putting everthing back together from a new head gasket job on a 91 940T. Took it for a test spin and it was choking.
    I really thought I did something wrong and I was about to walk away.
    It turned out it was a loose turbo hose pipe to the throttle body. The one in a thousand things I forgot!

    Rob








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      Odd Problem Still Continues 700 1989

      posted by  VolvoSteel on  Tue Jan 26 14:41 CST 2010
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      last visit: Sun Mar 23 21:28 CST 2014
      [RELATED]

      Going to look into it, but if i recall i triple checked all hoses during, aft and after again of the engine install. never hurts to check them either way.








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    Odd Problem Still Continues 700 1989

    posted by  someone claiming to be fixit2002 on  Mon Jan 25 06:27 CST 2010 [RELATED]

    Does the grade of gas make any difference? Don't see anything about sparkplugs. Were they replaced or regapped? Are you using Bougicord ignition wires? Oftentimes weak spark conditions will only cause noticeable problems during turbo boost.








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    Odd Problem Still Continues 700 1989

    posted by  David Johnson on  Sun Jan 24 20:11 CST 2010
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    last visit: Sat Oct 8 21:19 CST 2011
    [RELATED]

    You said that the turbocharger was rebuilt, but how about the hoses running from the turbo to the intercooler, and from the intercooler to the intake? Have you checked your air box hose for tears? What does the turbo gauge do when this happens?








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      Odd Problem Still Continues 700 1989

      posted by  VolvoSteel on  Tue Jan 26 14:44 CST 2010
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      last visit: Sun Mar 23 21:28 CST 2014
      [RELATED]

      hoses are original only proble i had was from airbox to turbo had tear where it mounts turbo due to the clamp, i cut it off and remounted. int to turbo is soft but not soft enough to collapse during boost.

      Turbo guage hold's steady over during boost, does not change at all unless of course you let your foot off the pedal. same thing with the Tach







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