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    Fel-Pro OS34508R and the case for RTV

    Hi Everyone, I thought I would share my experience with this gasket. Instructions specify NO rtv. I followed the directions and torqued to spec. Idled up to op temp and was leak free until I took it for a test drive. After returning I noticed a steady drip from the front "valley" part of the...
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    Puzzling overdrive problem... possible pcm issue

    I’m at my wits’ end with this. I disconnected the abs connector and followed the procedure but the truck actually ran worse. The shift points were really crazy. Speedometer waiver was still present. After reconnecting the abs connector it’s still acting similar to when I disconnected it. No...
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    Puzzling overdrive problem... possible pcm issue

    Installed the new tone ring and a used PSOM with the tach. While it’s a lot better I’m still getting speedometer waiver... It seems to start right around 65-70mph. The weird thing is the PSOM seems to “lag”. When I start driving it will take the speedometer a second or two to register my speed...
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    Puzzling overdrive problem... possible pcm issue

    Update: Pulled the tone ring off the carrier and found some broken/smashed teeth. I'm going to replace that and the vss with a motorcraft sensor. Has anyone had issues with a bouncing speedometer triggering TC lockup problems?
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    Puzzling overdrive problem... possible pcm issue

    Will do, Miesk. 558 332 327 628... (ignore the egr codes for now as I’m in the process of getting those cleared according to your previous instructions). The weird thing is the truck will drive fine for close to 30-40 min. Will hold lockup fine and then randomly start bucking and revving into...
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    Puzzling overdrive problem... possible pcm issue

    I took the truck for a short trip about 1.5 hours away. About 30 min into the drive the truck felt like it was slipping into neutral and hunting for the right gear... The only way I made it home was by disabling overdrive. I’ll pull codes but I’m hoping it’s electrical. Just driving around town...
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    Puzzling overdrive problem... possible pcm issue

    Not yet. Transmission is shifting smooth and holding overdrive. My main focus at the moment is getting the EGR functioning again. I bypassed the vacuum solenoid to see if EGR valve would close, but the vacuum was too weak. If I apply manifold vacuum directly to the EGR it will open and cause...
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    Puzzling overdrive problem... possible pcm issue

    Any idea what would cause the lockup to not disengage long enough to gain speed? If I tap the brake pedal it will unlock for just about a second and then drop back down. I'll BOTL for another computer. Mine is a WAY1 and I can't find a reasonably priced replacement...
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    Puzzling overdrive problem... possible pcm issue

    Solved! Sort of... I initially installed a toggle switch to rule out tc mechanical failure by "splicing" it in to the TCC output wire for convenience. I used a common on/off accessory switch (with indicator) and wired it backwards to created a switched grounding mechanism. I left it in place...
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    Puzzling overdrive problem... possible pcm issue

    Interesting... I followed the procedure and I am getting more than a .5 volt change when I cycle the throttle and probe the TCC output and VPWR. It would flash from 0 to 1.5 roughly. Does that eliminate a faulty pcm? If it was a fault in the solenoid pack or TC internals I would think it would...
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    Puzzling overdrive problem... possible pcm issue

    Thanks, Miesk! I need some clarification on the above test. Do I test these pins individually against pin 60 (breakout box)? For instance, would I put one lead on pin 53 (TCC lockup output) and the other lead on pin 60? Sequentially, would I then measure resistance between pin 37 and 60? How...
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    Puzzling overdrive problem... possible pcm issue

    I see some corrosion, but it doesn't look all that bad. Maybe you can see something that I don't. Check the following pics in my garage. https://www.supermotors.net/registry/media/1157426 https://www.supermotors.net/registry/media/1157427
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    Puzzling overdrive problem... possible pcm issue

    Pulled these codes tonight: 558 629 332 334
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    Puzzling overdrive problem... possible pcm issue

    Hi All, Fist off, it's great to see this site is still "bucking". I joined close to 12 years ago as a teenager when I bought my 95 (unfortunately I lost my original email). It's nice to see familiar users like Miesk still providing a wealth of knowledge. That being said, here's what has me...
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