Technical Q&A

Welcome to PCA's source of expert advice, where our PCA National Technical Committee experts answer your questions about all things technical.

Engine stalls after a few minutes of running. I replaced the fuel pump / DME relay, new fuel pump and filter. Tested the alternator output. Still stalling.

Tuesday 10/14/2025 | 1987 | 924S | Fuel System

READ ANSWER

Asking Pedro

Tuesday 10/14/2025 | 2008 | Cayman | Electronics

This is a question I asked and that Pedro answered awhile back.asked on Fri 08/29/2025 by Michael [GEM] 2008 | Cayman | Electronics | Bakersfield, CAMy TPMS stopped reporting two of my tires initially and then stopped reporting the other two as well

READ ANSWER

My odometer just stopped working on my 1980 911 SC so I pulled it easily from the dash and sent it to Palo Alto Speedometer company to replace the broken gear. Do you have a diagram of the back or the 150 MPH gauge to make sure I connect the right wires to the right connector? Do you have a recommendation to replace the bulbs with LED warm bright lights?

Monday 10/13/2025 | 1980 | 911 SC | Electrical

I sent this question on 10/8 and it was answered on 10/13 promptly. The problem is Brian (CMR) attached a diagram that would not open. attached file: 13p12950o_img_9338.png It said Woops, Oops! The Page you requested was not found!Rest assured

READ ANSWER

Engine makes a sort of "eeerrrp" chirp sort of noise when I shut it off.

Monday 10/13/2025 | 2002 | Boxster | Engine

The noise lasts about a second just as I shut the engine off. I can't hear any noises when the engine is running. I took off serpentine belt and noise still occurs with the belt off so it's not a idler pulley, AC or alternator. There are no codes and no Check Engine light. Any ideas.

READ ANSWER

What is recommended battery for 2014 Boxster s

Sunday 10/12/2025 | 2014 | Boxster S | Electrical

Recommended battery for 2014 boxster s

READ ANSWER

Converting short wheelbase 911 to long wheelbase. I know I need to replace the swb trailing arms with the longer aluminum banana arms and lwb spring plates. I have heard that the pivot points for the banana arms must be relocated? I have also heard they are fine where they are? Also, the upper shock mounts must be moved? If so, can you provide the specs? Thank you for your help.

Friday 10/10/2025 | 1967 | 911 | Suspension

I am converting my 67 912 to a 1973 Carrera 3.0 est tribute. I have installed a 3.0 CIS injected six and trans from an 83 911 and will be converting it coil on plug, sequential f.i. With ITB’s. I am considering KW coil overs and need to change the rear suspension over to long wheelbase. I need a little specific info on dimensions of shock towers and trailing arms pivot points.thanks,

READ ANSWER

on my 2014 Cayman S I've had intermittent power steering loss. Most times only for a moment, but recently completely out with warning on the dash. Shop checked and found code for short/open circuit in the power steering motor. My question; is the power steering motor integrated in to the steering rack where the motor can be replaced or does the entire rack need to be replaced?

Thursday 10/09/2025 | 2014 | Cayman S | Electrical

READ ANSWER

Is it possible to replace the distance sensors in a PDK transmission, or must the entire transmission be replaced?

Thursday 10/09/2025 | 2014 | Cayman S | Transmission/Clutch

My PDK transmission gave an alert at 59,000 miles and becomes stuck in 4th, 5th, or 6th after warming up. The error codes are P1732 and P1736.

READ ANSWER

Will regular use of the "stop/start" function reduce the service life of the engine bearings?

Thursday 10/09/2025 | 2016 | Cayman S | Engine

I recently acquired ths car as a CPO. The dealer had the "start/stop" feature turned off when I purchased the car. I've talked to a few other Porsche owners with cars that have this feature, and they, too, have it turned off. In a perfect engineering world Porsche would have beefed up the bearings before the US government required this feature to account for the anticipated additional wear. Did Porsche? I get no particular joy unnecessarily burning fuel at a stop light, but I want this e ...

READ ANSWER

My odometer just stopped working on my 1980 911 SC so I pulled it easily from the dash and sent it to Palo Alto Speedometer company to replace the broken gear. Do you have a diagram of the back or the 150 MPH gauge to make sure I connect the right wires to the right connector? Do you have a recommendation to replace the bulbs with LED warm bright lights?

Wednesday 10/08/2025 | 1980 | 911 SC | Electrical

READ ANSWER

I do not understand how a Top Tier gasoline cleans the intake valves on the intake side of the valve with direct fuel injection. The gasoline never passes over the intake side of the valve. This question is not particular to my Porsche.

Wednesday 10/08/2025 | 2007 | 911 Carrera 4S Cabriolet | Fuel System

READ ANSWER

Need tips for installing small front spoiler.

Monday 10/06/2025 | 2006 | 911 Carrera 4S Cabriolet | Body

I’m having trouble installing the front spoiler (photo below). The valence is flexible, so it simply bends upward when I try to push the tabs into the slots. It is the correct part, and the slots all line up. Any tips?

READ ANSWER

I asked about EPR service in conjunction with oil change - it is described at https://www.bgprod.com/catalog/engine/bg-epr-engine-performance-restoration/ is this a valuable service?

Monday 10/06/2025 | 2006 | 911 Carrera | Engine

The tech who responded to my question was not familiar with the EPR cleaning process.Have others done this, or was I sold an unneccessary service (about $460).

READ ANSWER

is my engine purge fan failing?

Sunday 10/05/2025 | 2009 | 911 Carrera | Accessories

When I activate the fan in the deck lid to stage 1, there is no movement. When I activate it in stage 2, it spins but sounds really rough unlike before. This happened after a 5 hours drive in 80 degrees. I removed the fan and it spins freely.

READ ANSWER