Hi @all, a fellow enthusiast has probs with his 97 P38 with the 4HP24EH gearbox. Sometimes in the last days the car had either lost drive (neither forward, nor reverse) while driving or from startup. No messages, just no drive. No mechanical sounds he says. Oil level is fine and correct checked. And it recovers mystically self and then he can drive again. Gear selection works, as lever moves and gear indicator in the message centre are corresponding. Transfer box can be switched between high and low. Now we are a bit lost, where to start next steps for researching the cause ... any hints re greatly appreciated!
best regards
KCR
i know you said the level was checked , did you check or him , dont take someones word do it yourself and be shore
PS check level before starting it will be hi , after start it will be correct level, hopefully.
Level must be checked with a cold engine, engine running and after cycling through all the gears. Checking it without the engine running will show a level that is a good 100mm above the max mark.
I am sure he did. it correct, as I told & showed him, how to do it … only a few weeks ago;-) and I reminded him on the phone.
how long since it was serviced it could be picking up crap ( clutch plates etc) and getting stuck in the valving , simple to service just get a service kit , basically a pan gasket, filter and oil. if there is anything in the oil or the bottom of the pan you will see it, if it hasn't been done there could be hand fulls of it.
Hey guys, thx so far!
The gearbox has been serviced this year, less than 10.000 Km driven.
Another friend points towards electrics / wiring loom, because there was a damage/fire to the cats some month ago.
The P38 now has thrown a gearbox fault one time and the gearbox neutral, which points towards electricity, as my friend definitely did not put the fuse in the fusebox to select neutral for the transfer case.
As the gearbox has been changes tow times and there was catalyst damage underneath, we look for the wiring loom and connectors as a next step.