Recent content by 1998_K1500_Sub

  1. 1998_K1500_Sub

    Power steering question..

    Yes, it’ll fit
  2. 1998_K1500_Sub

    Power steering question..

    Until you know the flow, it’s a guess. IIRC, all he changed was the pump. So, I’m focused there :popcorn: But I’ve been wrong before.
  3. 1998_K1500_Sub

    Power steering question..

    If you want to re-install the EVO badly, I happen to have a OE PS pump w/ EVO valve in my stash of parts. It hasn't been used in years but I assume it still works. On your vehicle you may find the EVO connector up front, underneath, somewhere near the wiring that goes to the crank position...
  4. 1998_K1500_Sub

    Power steering question..

    So considering @AuroraGirl's comments and OP's post #1: If the replacement pump has given you light steering from the onset, all other things being equal, consider changing the flow control orifice to reduce the flow. Otherwise, perhaps the replacement pump isn't working properly and it's...
  5. 1998_K1500_Sub

    Power steering question..

    If the pump's fluid flow is too great, the steering can feel very light. The pump's fluid flow is controlled by the flow control orifice in concert with the flow control valve. The orifice is part of the fitting, known as a "pressure line union" or "union", located at the back of the pump...
  6. 1998_K1500_Sub

    Arteb Headlights / Taillights End-of-Life (?)

    Nobody's posted anything in a while. We've sold all the taillights we had on-hand, and we need to backfill for some headlights that were damaged, so we placed an order with our supplier for another five pairs of taillights and four headlights. Carlos currently has headlight pairs on-hand, he's...
  7. 1998_K1500_Sub

    Test to validate whether or not a BCM is good or not

    As an alternative to the step above, you might try putting a ammeter on the system and measuring the current drawn when the headlights are on / off. There are a variety of ways to perform the current measurement, I won't elaborate unless it comes up in discussion. If the current's excessive or...
  8. 1998_K1500_Sub

    Coolant temperatures while towing

    For a special-purpose vehicle, I can understand this. I suspect even the "race guys" run some sort of corrosion inhibitor in their coolant water... maybe that Redline stuff(?). Many years ago, a younger, dumber me ran distilled water w/o additives in a new engine for couple of weeks, and when...
  9. 1998_K1500_Sub

    Coolant temperatures while towing

    Yup, that's my concern, for any additive... Redline's or any antifreeze concentrate. The magnesium & calcium carbonates / sulfates, total dissolved solids, sodium if it's softened... I don't want them in my cooling system.
  10. 1998_K1500_Sub

    Coolant temperatures while towing

    Yes, and Redline also says: "Rust and corrosion protection allows for use of straight water" which suggests they've an anti-corrosion additive pkg.
  11. 1998_K1500_Sub

    Coolant temperatures while towing

    I thought the issue was NEVER to run ANY water as a stand alone coolant w/o some sort of additive package to provide corrosion protection and/or anti-cavitation protection (to name at least two). Check me if I'm wrong. A third-party additive package, RedLine's WaterWetter, is to be used with...
  12. 1998_K1500_Sub

    88-94 5.7 Suburban A/C Diagnosis and Tuning

    You've got two screws loose on the trans cooler... ... which you've probably fixed by now. Check that trans cooler. I wouldn't allow it to touch the condenser under any circumstances, but that's just me.
  13. 1998_K1500_Sub

    Interesting set of symptoms...thoughts?

    Call it a "comparator".
  14. 1998_K1500_Sub

    Interesting set of symptoms...thoughts?

    Yes, but it's a voltage source with an internal series resistance of ~1-10MΩ. The ECU's input would have a similar (or greater) input impedance. Of course, the FSM shows the O2 sensor as a variable DC voltage. No internal series resistance is shown or suggested. But the FSM isn't supposed to...
  15. 1998_K1500_Sub

    Interesting set of symptoms...thoughts?

    With the O2 sensor disconnected, the ECU may have been sensing noise on the the input, particularly if that input has a high impedance (which is likely). From ChatGPT: For most zirconia-type oxygen sensors, the impedance can be quite high, often in the range of several megaohms (MΩ)...
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