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RLHornbeck

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Posts posted by RLHornbeck

  1. The CEL came on today so i pulled out the Durametric and found 2 codes

     

    P2677: O2 Sensor Pumping Current Trim Circuit Bank 2 Sensor 1 - No Signal/communication, test conditions are not-completes, fault is active and causing a DTC light

     

    P0150: O2 Sensor Circuit Bank 2 Sensor 1 - Implausible signal, test conditions are not-complete, fault is currently active and causing a DTC light

     

    Where should i start looking for a problem or is it as simple as an O2 sensor?  if so how do i test the sensor to confirm that is the problem.

     

    Thanks

     

  2. That's what happened to me, both motors disintegrated internally. The fan vanes have very tight tolerance.I think the valve will eventually give out, stuck open and exhaust back flows to the fan. Then, your brand new fan might break again.Or valve might stick close, overloading the 40A motor.Motors are about 250'each, valve is 120 each. I recommend to change all 4. Then no worries about it.I was chasing CEL for over a month until I replaced all 4, resetting and coming back on again.I think a broken piece jammed my valve open. You should clear the connecting hose so nothing is stuck in there.

    Thanks

  3. I recommend to replace secondary air injection valves, both sides. If those fail and stuck open, secondary air pump might fail which is another 200 bucks each. You can do it later, but it's a 5 minute job with hoses in the back out of the way.Also expansion tank as the other poster mention, the plastic weld will break and eventually leak coolant.

    I just lost one of my air pumps, to include most of the plastic wheel exploding. Is there a way to confirm the valves are ok and plastic did not get down into them without disassembling everything?

  4. I have been working on a misfire in cylinder 4 but can not seem tofind the cause. The truck runs rough at idle and seems to have a bitless punch. The DTC light is on and my 05 CTT is showing 2 fault codes.

    P0300:Random / Multiple cylinder misfire detected – Implausible signal, testconditions are not-completed, fault is active and is causing a DTC light

    P0304:Cylinder 4 misfire detected – Implausible signal, test conditions arenot-completed, fault is currently active and is not causing a DTC light

    I have done a few things but none have fixed or moved the problem to anther cylinder. What I have done:

    Moved the coil from cylinder 4 to 3: misfire still in cylinder 4

    Moved spark plug from cylinder 4 to 3: misfire still in cylinder 4

    Alsowith Durametric connected I can only see misfires in cylinder 4 whenlooking at actual values no other cylinders show any misfires. Thismisfire also only shows up when at idle, any application of throttle and the misfire stops until idle is reached again.

    Any thoughts as to what to check next? I have tried a search for P0300 and P0304 but nothing beyond coils shows up.

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