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1998 996 Tiptronic limp mode - How do you diagnose if electricial prob


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I have a 98 996 carrera 2, with a tiptronic box in it, that after it had new ATF put in, started to lurch from 2 to 3 and jump

into gear rather than go smoothly, at the same time the garage found a screwdriver that had been wedged at the top of the gearbox

from the last service, when they had dropped the box to fit new brake pipes.

Thus, after a few weeks the other day, the car went into limp mode, and wouldnt power through gears ets, so took to indy garage

who admit they arent tiptronic specialists, who did a diagnostic, rang porsche and a few things came back.

*They drained the box and cant see any metal or metalic fragments in the oil, clean as a whistle.

*They spoke to a few people who stated could be solenoids, but they are internal and thus have to drop the box out and

then fit one by one, to work out which one has broken.

*The first thing they are going to do is fit a speed sensor, which is easy to get to and cheap, see if this helps.

The gbox was fine before it had the oil change, when it came back it was doing the clunking, is there any electrics at the top of the box

that could have been disturbed, on the outside ? or something as simple as not connected to electronics on the car..?

options are recon box for 3k new box for 6k, rather solve the problem for low cost, as was working fine before oil change, could some electrics

have been disturbed, how do you diagnose the solenoids..the diags coming back when plugged in to Porsche machine, dont help at all

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1) Go to a dealership with knowledge.

2) Check or refill the gearbox with approved ATF/check ATF level.

3) "Thus, after a few weeks the other day, the car went into limp mode" there should be fault codes present!!

Without fault codes, it's still guessing, could be anything, control box/wiring-connectors/valve block, etc.

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