Recent content by Grumbles

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    E4OD High RPM Shift Between 1-2

    I might do something like this down the line. I'm still in the process of fixing all the basic stuff but eventually there will be an engine out to fix a bunch of oil leaks and install a turbo. Might do it then.
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    E4OD High RPM Shift Between 1-2

    Updates.... There was nothing wrong with that cap. I tested it once removed from the board and..... it was fine. Capacitance reading was exactly what it was supposed to be. Put the cap back in the computer and then buttoned it all up and did a test drive to make sure I didn't fry the...
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    E4OD High RPM Shift Between 1-2

    Updates. I pulled the computer and checked the engineering number. It comes back as a 89-90 7.3L Diesel computer, so it's the right one for the application. I then cracked it open and did a visual inspection and lo! A bulged capacitor! Tested it with the meter and it's dead. Also saw some...
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    E4OD High RPM Shift Between 1-2

    I have updates. The shift issue is exactly the same after checking the VSS. Didn't expect that to change anything... I did find a poorly done ground in the cabin. After fixing that all my chicken chaser lights work now, which is nice. I did try cracking the throttle below 2.7kRPM to see if...
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    E4OD High RPM Shift Between 1-2

    I know I keep talking about the PCM, but I have a few reasons to suspect it. 1. This is a weird problem. Weird problems are usually electrical in nature 2. When I got the truck the EEC Relay and Connector were melted and ruined. I've replaced both damaged parts, but it's not the only...
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    E4OD High RPM Shift Between 1-2

    I do feel four shifts. I do a little test loop that's a few miles long and give me a few chances to run through all the gears as it requires a few stops. When accelerating to highway speed (60mph) the shift points are fine as you are giving 50% throttle or so to get up to speed. The issue is...
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    E4OD High RPM Shift Between 1-2

    If you mean it's shifting 1 to 3, that's not the case. I can count (and feel) the shifts from 1-2-3-OD. It does do the 1-2 shift consistently when placed in drive, just at the high rpm I've mentioned. That being said I can give it the beans from 1st and then back of the throttle and see what...
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    E4OD High RPM Shift Between 1-2

    I can give that a try. Accelerate up to around 2000rpm or so then just let go of the throttle?
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    E4OD High RPM Shift Between 1-2

    I think I read somewhere that the cooler line will experience ~20lbs of pressure so I don't think all the clamps were needed. I bought the line and currently am using two clamps, one at each end. I did cut the line a bit long so that there's a good amount of hose over metal cooler line at...
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    E4OD High RPM Shift Between 1-2

    Moar updates. I checked out the VSS today. It looked good, didn't have much schmoo on it. I ohm'd it out and it showed ~1800 ohms, right in the butter zone for the sensor, so I believe it to be good. Next up will be doing that KOEO test again and the PCM inspection. I didn't have time today.
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    E4OD High RPM Shift Between 1-2

    Thinking back, it did. It was shifting rougher when I first got it running again, so I stopped test driving and started researching what caused weird transmission things... which led me to the shift solenoid pack and it's connector... which led me to finding the connector o-ring had failed and...
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    E4OD High RPM Shift Between 1-2

    Okey dokey, updates. I dug into the mess of hose clamps on the cooler line and found that the cooler line had been cut at some point. My theory is the hose clamps were placed to add support to the rubber replacement line to keep it from blowing. I replaced the old line with a piece of...
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    E4OD High RPM Shift Between 1-2

    It's possible I miscounted the shifts and I can check that today. I had to finish rebuilding the rear brakes before I could do test drives again. The tires on this one are stock, whatever size that is. I have tested the RPM sensor that goes into the injection pump and it checks out fine when...
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    E4OD High RPM Shift Between 1-2

    Tomorrow I'll investigate the rubber line and see what it turns out to be. I'm also going to drop the pan and address a leaking gasket that I just installed when I dropped the pan before to install the new shift solenoid pack. I suspect the pan is warped and that I'll need to bend it back into...
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    E4OD High RPM Shift Between 1-2

    transmission is full with engine warmed up and turned on. I did notice a stretch of rubber hose with about 6 hose clamps on it near the transmission pan...
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