Td5 fixed! :)

[justinc]

just reading offtracks great thread about de bricking and saw the screen of default values, and thought i'd better mention this.
last week, had a d2 with an interesting fault, massive lag, like disconnected turbo hose lag, then whoosh, off we go....very annoying and quite dangerous with a tandem nag trailer hanging off the back trying to enter the freeway:( has a trs msb ecu upgrade, and is auto.

maf numbers are great, 55 kg/hr at idle, 480+ loaded, manifold pressures fine, sees 230kpa (abs) and has no overboost etc.

noticed the inlet air temp was erratic after a short drive, then stayed at 120 deg C...:o

fault codes showed no issues apart from when i disconnected the aap sensor while checking air filter etc. i would've thought an inlet temp code would've been seen...:confused:

the map sensor changed out for my test unit and vehicle back to its best performance again. new one in now.

also had a dead short for passenger front window, eventually found the harness adjacent to the bcu was un supported and had been partially hacksawed through by the lh dashboard support bracket....:p.

anyway, all is good again back to dragging a couple of walking / galloping pet food containers about to and from shows....:wasntme:

jc

[gazk]

Thanks JC. I had an interesting one last year with a TD5 Auto. On the stall test it would only go to 2000RPM. Swapped out the waste gate solenoid and actuator with no change. Eventually after consulting RAVE again I tracked the problem down to the MAP sensor - found that a wire from the MAP sensor to the ECU was broken (cut). You get the same lack of power effect if you disconnect the MAP sensor.

[justinc]

Thanks JC. I had an interesting one last year with a TD5 Auto. On the stall test it would only go to 2000RPM. Swapped out the waste gate solenoid and actuator with no change. Eventually after consulting RAVE again I tracked the problem down to the MAP sensor - found that a wire from the MAP sensor to the ECU was broken (cut). You get the same lack of power effect if you disconnect the MAP sensor.

certainly, this one was showing a good manifold pressure, but it was the temp circuit that had failed. pretty rare ,as i have so far only seen a few with dead pressure circuits before.

jc