Author Topic: 90' W150 Over Heating... at my wits end  (Read 2515 times)

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Offline carfreak6970

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Re: 90' W150 Over Heating... at my wits end
« Reply #50 on: June 30, 2020, 10:08:33 am »
So I should not worry about that great of a temperature fluctuation?!? damn...

I do have to admit that I only checked the codes after I checked the timing.  Which the procedure is to disconnect the temp sensor by the thermostat.

Should I get the mopar temp sensor?

but isnt code 22 dealing with the temp sensor in the throttle body? and According to the tests I ran, the sensor appears to be working fine... correct?  I did replace the engine temp sensor with one from delphi.  I understand how the temp sensor readings can affect fuel mixture.

to clear codes I just have to disconnect the negative battery cable correct?  that way if that codes comes up again it would lend itself to be the sensor

90 W150. Club Cab, 8 ft bed. 360 auto

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    Offline Jeffy45

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    Re: 90' W150 Over Heating... at my wits end
    « Reply #51 on: June 30, 2020, 11:29:40 am »
    ECT specs
    1988 Ramcharger LE 150 318 TBI 727 non-lockup.                   
           " If a law is unjust, a man is not only right to disobey it,   
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    Offline Jeffy45

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    Re: 90' W150 Over Heating... at my wits end
    « Reply #52 on: June 30, 2020, 11:32:02 am »
    To clear the fuel trims i would disconnect both cables from the battery and hold them together for 10 seconds
    1988 Ramcharger LE 150 318 TBI 727 non-lockup.                   
           " If a law is unjust, a man is not only right to disobey it,   
                    he is obligated to do so"                                                   
                                                                 - Thomas Jefferson

    Offline Jeffy45

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    Re: 90' W150 Over Heating... at my wits end
    « Reply #53 on: June 30, 2020, 11:34:07 am »
    delphi is shit
    1988 Ramcharger LE 150 318 TBI 727 non-lockup.                   
           " If a law is unjust, a man is not only right to disobey it,   
                    he is obligated to do so"                                                   
                                                                 - Thomas Jefferson

    Offline carfreak6970

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    Re: 90' W150 Over Heating... at my wits end
    « Reply #54 on: June 30, 2020, 11:43:22 am »
    Oh...  Well thank you for bringing that to my attention.  Ill try to get the mopar one.  thanks!!

    In changing the temp sensor, should I change the thermostat as well?  the system has to be drained to get the sensor out, so even though I replaced the thermostat and it is now a mopar one, would going to a high flow one be best? is there another brand of thermostat to try?

    thank you
    90 W150. Club Cab, 8 ft bed. 360 auto

    Offline ToxicDoc

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    Re: 90' W150 Over Heating... at my wits end
    « Reply #55 on: June 30, 2020, 12:17:30 pm »
    Factory thermostat is probably the only one reliable out of the box. Stant is typically good but nothing is guaranteed these days. Whatever you decide (even reusing the current one), I would clean it, inspect it carefully for defects, and *boil it in a pot of water* prior to install. That's 212 F and you can make sure it opens and closes correctly.

    That being said, make sure the error code isn't from a loose connection, bad wire, corrosion in the terminal, etc.
    '85 W150 SB, 408 stroker, Magnum manifolds, Performer RPM, 670 Truck Avenger, HEI ignition, Auburn LSD 9.25 and '82 D44 (non-CAD) with 3.55/3.54,  NV4500/NP241

    Offline carfreak6970

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    Re: 90' W150 Over Heating... at my wits end
    « Reply #56 on: June 30, 2020, 12:33:32 pm »
    okay sounds good!!

    ill try to get that in the next coming weeks.
    90 W150. Club Cab, 8 ft bed. 360 auto

    Offline Jeffy45

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    Re: 90' W150 Over Heating... at my wits end
    « Reply #57 on: June 30, 2020, 12:35:36 pm »
    To add to this I don't think it has anything to do with the ECT
    « Last Edit: June 30, 2020, 04:21:31 pm by Jeffy45 »
    1988 Ramcharger LE 150 318 TBI 727 non-lockup.                   
           " If a law is unjust, a man is not only right to disobey it,   
                    he is obligated to do so"                                                   
                                                                 - Thomas Jefferson

    Offline ToxicDoc

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    Re: 90' W150 Over Heating... at my wits end
    « Reply #58 on: June 30, 2020, 12:46:07 pm »
    I don't think you'll cool down the truck with that single row radiator I have a cheap aluminum 2 row and it is just sufficient with the AC on in the heat

    I thought he wrote he changed it to a new 3-row brass one.
    '85 W150 SB, 408 stroker, Magnum manifolds, Performer RPM, 670 Truck Avenger, HEI ignition, Auburn LSD 9.25 and '82 D44 (non-CAD) with 3.55/3.54,  NV4500/NP241

    Offline Jeffy45

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    Re: 90' W150 Over Heating... at my wits end
    « Reply #59 on: June 30, 2020, 04:07:27 pm »
    I'll have to re read..... was probably skimin it.  Don't know how I missed that....  did he get a new sender for the gage, is the gage at fault??                     Your also missing the top plastic shroud that goes from the core support to the radiator
    « Last Edit: June 30, 2020, 06:10:41 pm by Jeffy45 »
    1988 Ramcharger LE 150 318 TBI 727 non-lockup.                   
           " If a law is unjust, a man is not only right to disobey it,   
                    he is obligated to do so"                                                   
                                                                 - Thomas Jefferson

    Offline Jeffy45

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    Re: 90' W150 Over Heating... at my wits end
    « Reply #60 on: July 1, 2020, 04:30:39 am »
    Very odd cooling system question - RESOLVED - Dodge Ram, Ramcharger, Cummins, Jeep, Durango, Power Wagon, Trailduster, all Mopar Truck & SUV Owners. Dodgeram
    https://ramchargercentral.com/vehicle-help/very-odd-cooling-system-question/
    1988 Ramcharger LE 150 318 TBI 727 non-lockup.                   
           " If a law is unjust, a man is not only right to disobey it,   
                    he is obligated to do so"                                                   
                                                                 - Thomas Jefferson

    Offline dodge82273

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    Re: 90' W150 Over Heating... at my wits end
    « Reply #61 on: July 1, 2020, 04:44:49 am »
    because the code has been set , "out of range " , I'd replace the sensor that is connected to that code , in hopes of better fuel mileage/performance . What I personally am unsure of :  which sensor/sender is responsible for that code , is it the 1 wire to the dash , or the 2 wire to the computer ( my guess) ?  the wide swing of the actual temps is likely because the new radiator cools pretty quickly , allowing the tstat to close some , reopen, cool , close , etc the actual temps you see with a tool are within range of what I'd expect ... :)
    78 to 93 parts trucks
    91 w250 318 518 44/60 single 9 foot driveway plow locked
    87w150 44/corp727 kandy w/ ghost bats/summer
    86-D/W100 44/corp/318mag/carb/4500/aka shit box/winter
    93w150short/44/corp/360/le/mag "caddie"
    93w250LB51844/60posi 318"New Truck"
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    Offline Jeffy45

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    Re: 90' W150 Over Heating... at my wits end
    « Reply #62 on: July 1, 2020, 05:06:21 am »
    The delphi ECT ran a bit lean,  and was out of spec, but got me 13.5 mpg.   The NTK runs a bit rich on idle and I'm now back to about 10 mpg.  Hopefully the mopar ECT will spec out. And give a happy medium.                                                 
                    And I found gsellstr's cooling thread. About the MSD, my truck has idled rough since MSD, plugs are always white w/a very faint ring towards the tip of the porcelain.  Just throwing it out there
    1988 Ramcharger LE 150 318 TBI 727 non-lockup.                   
           " If a law is unjust, a man is not only right to disobey it,   
                    he is obligated to do so"                                                   
                                                                 - Thomas Jefferson

    Offline ToxicDoc

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    Re: 90' W150 Over Heating... at my wits end
    « Reply #63 on: July 1, 2020, 10:38:53 am »
    because the code has been set , "out of range " , I'd replace the sensor that is connected to that code , in hopes of better fuel mileage/performance . What I personally am unsure of :  which sensor/sender is responsible for that code , is it the 1 wire to the dash , or the 2 wire to the computer ( my guess) ?  the wide swing of the actual temps is likely because the new radiator cools pretty quickly , allowing the tstat to close some , reopen, cool , close , etc the actual temps you see with a tool are within range of what I'd expect ... :)

    Only the 2-wire sensor is monitored through the computer and affects fuel mix/trim. the 1-wire is just a ground for the dash gauge. So in his case, 2 different issues. The 2-wire affecting operation quality, and whatever else affecting the temperature swings (whether normal or not).
    '85 W150 SB, 408 stroker, Magnum manifolds, Performer RPM, 670 Truck Avenger, HEI ignition, Auburn LSD 9.25 and '82 D44 (non-CAD) with 3.55/3.54,  NV4500/NP241

    Offline dodge82273

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    Re: 90' W150 Over Heating... at my wits end
    « Reply #64 on: July 1, 2020, 02:55:41 pm »
    there ya go .... R/R the 2 wire water temp sensor ... watch for steam .
    78 to 93 parts trucks
    91 w250 318 518 44/60 single 9 foot driveway plow locked
    87w150 44/corp727 kandy w/ ghost bats/summer
    86-D/W100 44/corp/318mag/carb/4500/aka shit box/winter
    93w150short/44/corp/360/le/mag "caddie"
    93w250LB51844/60posi 318"New Truck"
    93w350 6 tire CC 60 c/a flat bed dump

    Offline Jeffy45

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    Re: 90' W150 Over Heating... at my wits end
    « Reply #65 on: July 1, 2020, 03:19:35 pm »
    You don't have to drain the system to change the ECT. Little if any comes out.  And or just remove a block drain, and let a pint or so out.
    1988 Ramcharger LE 150 318 TBI 727 non-lockup.                   
           " If a law is unjust, a man is not only right to disobey it,   
                    he is obligated to do so"                                                   
                                                                 - Thomas Jefferson

    Offline SuperBurban

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    Re: 90' W150 Over Heating... at my wits end
    « Reply #66 on: July 1, 2020, 04:01:11 pm »
    You don't have to drain the system to change the ECT. Little if any comes out.  And or just remove a block drain, and let a pint or so out.
    Correct, leave the radiator closed, and the temp gauge will not leak enough to worry about, if you do the swap quickly. I doubt I ever lost more then a cup of antifreeze. More like 1/4 to 1/2.
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    Offline carfreak6970

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    Re: 90' W150 Over Heating... at my wits end
    « Reply #67 on: July 1, 2020, 07:25:09 pm »
    I know of the 2 wire temp sensor by the thermostat housing and the two wire temp sensor on the throttle body.  Where is the one wire one?

    Yes this is a brand new 3 row brass radiator.

    I could get the mopar temp sensor. but how would I know if the gauge is at fault?  When I temp gun the temps, the high temps correspond to the high reading on the factory temp gauge.

    I just read that thread, and it appears his issue was the timing set that set his timing 5 degs retarded.  Is there a way to check that on my truck without tearing the entire front of the engine apart?  I do have a timing wheel but I am not sure I have a piston stop that screws into the spark plug port.

    90 W150. Club Cab, 8 ft bed. 360 auto

    Offline dodge82273

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    Re: 90' W150 Over Heating... at my wits end
    « Reply #68 on: July 2, 2020, 12:44:52 am »
    IIRC the 1 wire is on the other side of the tstat , in any event it also screws into the manifold's water jacket , up front there .
    78 to 93 parts trucks
    91 w250 318 518 44/60 single 9 foot driveway plow locked
    87w150 44/corp727 kandy w/ ghost bats/summer
    86-D/W100 44/corp/318mag/carb/4500/aka shit box/winter
    93w150short/44/corp/360/le/mag "caddie"
    93w250LB51844/60posi 318"New Truck"
    93w350 6 tire CC 60 c/a flat bed dump

    Offline carfreak6970

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    Re: 90' W150 Over Heating... at my wits end
    « Reply #69 on: July 6, 2020, 11:07:09 pm »
    So I recalled a conversation with my dad that this truck had cooling problems ever since the original fan clutch was replaced at 113xxx miles.  Also while looking at the maintenance log the truck had the engine replace with a remanufactured unit at 101xxx miles. The thermostat was changed at the same time the fan clutch was but was still having issues.  a 180 thermostat was put in 300 miles after the fan clutch and thermostat were changed, but that was changed back out for a 195 at 121xxx.  I believe this is where he found out that you start to throw codes if you done use a 195 thermostat.  However, also at 121xxx miles he removed the clutch fan and installed a flex fan.  that helped the situation but never really cured it...

      The timing chain was replaced at 184xxx but to my knowledge the temp issue was still a concern.  So using the thread posted above as a reference that the timing chain was made incorrectly does not make too much sense because in my case that means two timing sets were made incorrectly.  But the quality of the timing sets really dont mean much if the cam/crank shafts arent made correctly.  So I really dont want to tear the front of the engine down...  but before I get to that point and verify that the cam is timed properly I was thinking about other things that could add to my problem. 

    On the old V8s ignition timing was a function of your initial timing, your engine speed and vacuum.  On this rig it is a function of the initial timing and inputs from other sensors.  The coolant temperature sensor, the hall effect sensor, throttle position, and the MAP sensor.  It was said to replace the coolant temp sensor to the mopar one, which isnt to hard to do, but I was also thinking maybe my MAP sensor or the vacuum hose supplying it is faulty.  If the sensor is reading a high vacuum when the engine is under load going up a hill (as in the vacuum hose is collapsing) it would advance the timing to far and potentially give me these high temps I am seeing.

    Thoughts?  am I on the right track? or is there something else I am missing?

    90 W150. Club Cab, 8 ft bed. 360 auto

    Offline Jeffy45

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    Re: 90' W150 Over Heating... at my wits end
    « Reply #70 on: July 7, 2020, 03:20:49 am »
    Your missing the top plastic shroud that goes from the core support to the radiator.  It will channel more air through the radiator. Might be as simple as that . Or not
    1988 Ramcharger LE 150 318 TBI 727 non-lockup.                   
           " If a law is unjust, a man is not only right to disobey it,   
                    he is obligated to do so"                                                   
                                                                 - Thomas Jefferson

    Offline dodge82273

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    Re: 90' W150 Over Heating... at my wits end
    « Reply #71 on: July 7, 2020, 01:13:55 pm »
    the coolent temp , there's 2 of them one with 1 wire one with 2 wires , 1 wire is JUST for the dash gauge , the 2 wire is the pcm's sensor , it gets unplugged , timing gets set then it gets plugged back in . 

     Flex fans :  fan blades actually slow air thru radiator at highway speed , it's one reason why fan clutches are used today , flex fans = bad

     missing cover between radiator and radiator support yep air over not thru rad .

     worn water pump impellers ?
    78 to 93 parts trucks
    91 w250 318 518 44/60 single 9 foot driveway plow locked
    87w150 44/corp727 kandy w/ ghost bats/summer
    86-D/W100 44/corp/318mag/carb/4500/aka shit box/winter
    93w150short/44/corp/360/le/mag "caddie"
    93w250LB51844/60posi 318"New Truck"
    93w350 6 tire CC 60 c/a flat bed dump