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Thread: Rough starting/running until 173-175F

  1. #1
    Van Enthusiast bikerjosh's Avatar
    My Van(s):
    87' blue LE 4wd 5spd, sold it in 2000, sad ever since.
    Join Date
    Oct 2015
    Location
    Walnut Creek, CA
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    275
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    Rough starting/running until 173-175F

    I canít be the only one experiencing this with my van. Issue started out of the blue. When I start my van after it has sat for a day it fire up and after 3-5 seconds starts running really rough and will die unless you bring the revs w/some extra skinny pedal. It sounds really strange like it is on.y running on 2 or 3 cylinders and if you try and drive it, it has very little power and doesnít want to go over 2500 rpm. I have tried driving it slowly on level ground (cause it doesnít feel like it make it up any hill). Once the temp on my digital water gauge hits 173-175F, the motor comes out of its stupor, sounds different, has full power and will idle on its own when you come to a stop. It will run like that the rest of the day w/o any problems, even after little it stop for 10 minutes.
    Any ideas from the collective? Vehicle specifics: 87í 4wd, 5 spd cargo. Thanks Josh
    1987 4wd 5spd Cargo van (uncut)-modding in 3,2,1

  2. #2
    Van Enthusiast
    My Van(s):
    (2) 1989 2WD LE VAN Wagons
    Join Date
    Jan 2011
    Location
    Los Angeles
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    259
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    Re: Rough starting/running until 173-175F

    EFI Water Temp Sensor Possibly?

  3. #3
    Van Fan
    My Van(s):
    95 Previa SC, RWD, Auto
    Join Date
    Feb 2019
    Location
    Columbus, IN
    Posts
    46
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    1

    Re: Rough starting/running until 173-175F

    does it feel like a dead miss? could be distributor or ignition wire issues. I've had that be temperature and humidity related.

    water temp sender was my first thought, if it's failed just right, it could be telling the ECM the engine's warmer than it is thus a lean-roughness issue till reality matches the sensor.
    -Russell
    "You don't get to judge me for how I fix what you break"
    -95 Previa SC RWD
    -05 Subaru Baja Turbo, 03 Subaru Baja NA, 01 BMW R1200c, 94 Firebird v8, 70 VW Beetle

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