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Thanks again for the input. Very real. Does anybody know if I were to manage the electronic graft, which Bosch ABS pump would be a compatible candidate/donor? If I made this work, I'd be sure to report the finding and how this is done. Thanks!
Appreciate the Frankenstein comment and $10 helmet. But it is really not. I drive a 16 yo car that does not command a $4000 part, really. Some of us just want a solution, in a more sensible way. What I'm suggesting is def not $10 fix. You buy a new part (for a lot less because it's not exclusively for Porsche) but with a grafted electronic board/version that would work just like new. Nothing about it is being cheaply done; the bit still comes from Bosch. I wonder if their rebuilt dept does the same thing anyway... Part of the forum is about exploring options, so I would think. Thanks.
Thanks. I see.
ok. from an elec engineering point of view, from what I can see, the pump can not be repaired or at least repaired easily. so why not use another cheap Borsch-made pump and graft the electronic board over? I just don't think Bosch would make an entirely unique part for 996 turbo, the best is having a unique board that defies compatibility. any thoughts or am I just day-dreaming...
HI! Car is 2002 996 turbo. I've got code 4266 also. They come and go. From the above: Possible causes of fault - return pump motor locked up/runs too easily - Wire/plug connection faulty - PSM hydraulic unit faulty What does "return pump motor locked up/runs too easily" mean? Is the motor a separate unit, inside the pump, or...? Is this item a repairable thing? Thanks! CW
Hi all, From where I live, the Sachs (20-way adjustable) coilover for 996TT and KW V1 (non-adjustable) cost about the same. Which would be a better choice for DD? Thanks! I heard the V1 is really the same as V3, without the adjustments? true? Sachs is really not well-known for Porsche coilover upgrades... Thanks for any input!
The ball bearings have been replaced with new. So it's not from the bearing itself. The noise is apparent from idle to about 3000RPM. The noise is gone when the major components in the crank case (incl. the shaft) are swapped with another spare. Any inputs? Thanks.
Want to give an update... Since last Jan, the shop-owner put in an used "C4S" fuel pump into my TT, the pump has been working problem-free. Last month the shop-owner told me that something similar has happened again! A guy had his TT's fuel pump replaced new only to find it break down in less than 6 months. This guy then came to my friend's shop and replaced the pump and to find it break again in less than 4 months! Both repairs, the latest -02 version of the pump has been used... I had mine replaced twice and they broke in less than a year! So, the shop-owner asked me to NOT replace the working C4S pump in my TT... Any one heard of this crazy pump problem???
Posting this as a request for a shop owner who's been working on this problem for months w/o solution... Car is 996 turbo. The engine has a loud humming noise (like that of a bad bearing) from the crank case, from the center crank shaft. The sound was isolated using a stethoscope. All the copper sleeves on the shaft have been replaced, along with other replaceable/wearable parts. He finally swapped the whole crank case from another TT engine, the noise is gone. But he can't figure out why... The shop-owner said, he's seen a few TT with the similar noise as they age, but most car owners simply ignore it. Any inputs?
I left the car in the shop for a week. I want to update on what happened. The shop owner said the fuel pressure valve is 3.8bar at idle. He did however replace the fuel pressure valve. He didn't say why he did that... He's still unsure if there are other causes leading to the premature pump failures, so he gave me an old, but working pump for now. He didn't want to put in a new one just so it would fail again. I'm driving the car in great fear that it will die on me some where on the road... I want to check if there's another suggestions or places to check. I'd welcome any comments. Thanks!!
yes, has nothing to do with 2nd gear. It's just the 1st was too quick too loud, the 2nd allows you to hear the engine more clearly, and 3rd was too fast too much wind noise... I have Tip.
The gas filter has been replaced as well. During hard accel, especially on 2nd gear, I hear a momentary break in the engine roar. It's very brief. Does this mean anything to the fuel system? Thanks.
Thanks, Loren, for the quick reply. I am at the shop and the new part they have is 996-620-107-02 The mechanic and I are both worried if there are other issues (the relay, for ex.) that may cause pre-mature failures. Have you seen this happening twice within a year? Thanks again.