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    Fuel Injected!
    Join Date
    Mar 2023
    Location
    Renton Highlands/HB, Ca./Fujieda-Japan
    Age
    54
    Posts
    36

    1994 GM P-30 TBI ?s

    I own a 94 Southwind Storm motorhome (454 TBI w/4L80E) and thus far she has been very reliable. I purchased it back in Sept 2014 with ~45K on the odometer. I'm now at ~74K. I'm going to pull and rebuild the TBI here soon and was wondering if there is anything I should do while I have it off? This will just be a basic rebuild (gaskets, o-rings). I purchased a Delco rebuild kit for it Rochester 220 I believe. It has never been rebuilt and currently runs great. Once at operating temp it idles at 800rpm steady in Park. I also replaced the large AC condenser w/integral oil cooler this past Sept (leaking oil cooler) and clean out the radiator tube fins hwile the cooler was out of the way. If interested you can see the work I did here:https://www.gmt400.com/threads/conde...-cooler.59140/

    One other thing...

    Anyone know of the (ISC) on the 454 trucks? It speeds up the idle at first start. Was wondering if anyone knows where to source one. My current one is still functional but was wondering in the event it became non functional then what? It is the item in the following thread on the left...
    https://www.gmt400.com/threads/help-...-please.41025/

    Part number -
    GM 17084953 Idle speed control actuator


    Each year I make up a list of stuff to replace (due to age). Thus far I've replaced the following items using Delco parts...

    1. TPS
    2. IAC
    3. EGR (Linear)
    4. PCV
    5. Idle control speed solenoid
    6. Purge valve
    7. VSS sensors
    8. Aux fan motor
    9. Plugs
    10. Wires 8.5mm ceramic
    11. Shift solenoids A & B
    12. Alternator
    13. Radiator cap
    14. Upper & lower radiator hoses
    15. By-pass hose
    16. Engine - frame ground braid cable
    17. O2 sensor (single wire)
    18. Belts (3)
    19. MAP sensor
    20. Ignition coil
    21. Pick up coil (rebuilt distributor)
    22. Cap
    23. Rotor
    24. ICM
    25 T-stat (195F)
    26. Rebuilt driveshaft
    27. Front hubs
    29. Ceramic pads
    30. Master cylinder
    31. Trans wire harness (internal)

    Much appreciated everyone

    Not sure why the pic of RV is upside down LOL!
    Attached Images Attached Images
    Last edited by udidwht; 4 Weeks Ago at 08:02 PM.
    1994 GM P-30 Southwind Storm 28ft
    454 TBI w/4L80E trans
    VIN #1GBJP37N4R3314754

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