![Porsche Club of America - Want to Collect All The Club Coupes? Only Jerry Seinfeld Can Do It [w/video]](https://mediaassets.pca.org/pages/pca/images/content/2025_05_11_PCA-70th-Vehicle_L1050140.jpg)
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.
Getting CEL and Error Codes for P0420 and P0430 - Catalytic System below threshold efficiency Bank 1 and Bank 2
Wednesday 07/09/2025 | 2003 | 911 Targa | Other
Hi good people,Thank you very much for even spending the time to read my message. Just needed to talk to someone else about my thoughts on this matter. I've got a 2003 911 Targa (996.2 in common parlance). Over 100K miles. Recent Check engine light errors are showing up close to when I've done 100 miles (after I've reset the error codes and driven regular, non aggressive miles on freeway etc). P0430 and P0420 Catalytic System Efficiency below threshold banks. Ca ...
READ ANSWERcan i swap out my stock tires
Monday 07/07/2025 | 2014 | Cayman | Wheels and Tires
I have a 2014 cayman base model with 235 40 zr 19 on front and 265 40zr19 on rear. I need to replace myn good year eagles currently on the car. No track or autocross...I see an ad on pca for wheels and tires from a 2007 cayman s. the tires are 245 40 19 and 295 35 19.I checked the offset of the wheels on both cars, since the tires are offered with the wheels and they are compatible. the center bore diameters are equal and the bolt patterns match. I'm double checking to assure I am c ...
READ ANSWERWhat are idea roadcoarse track cambers for 987 cayman with fully adjustable suspension
Monday 07/07/2025 | 2006 | Cayman S | Suspension
Aquired an 06 Cayman S with upgraded suspension:- Tarrett Caliper and bracket studs- Rennline competition stud kit- Feal 441+ Race Coilovers, 550k/650k, 1-way, with spherical bearings- Tarrett adjustable toe links- EPS upgraded front lower control arms- Rear adjustable caster pucksGoing to Pitt Race for HPDE and wanting to get the right camber / toe / caster for this car as it can go beyond the stock 1.5 etc. but don't have enough knowle ...
READ ANSWERSport Plus Failure:
Sunday 07/06/2025 | 2009 | 911 Carrera 4S | Electronics
2009 Targa 4S with Chrono 35K miles. The Sport S function has stopped working and button doesn't light up. Tried disconnecting battery as a reset, and tried ignition on, engine off with accelerator pedal to floor for 60 seconds, this also did not reset. Fuses are all functional. What could be the cause, and fix please?
READ ANSWERcel is on with OBD 2 readings of "P1115 and P1119". Anybody know what it refers to?rs to?
Saturday 07/05/2025 | 1999 | 911 Carrera | Electronics
OBD2 readings of P1115 and P119. What these readings indicate?
READ ANSWERI am hearing that it is recommended to change from Mobile One to Liqui Moly oil? Is this a new recommendation from Porsche now?
Saturday 07/05/2025 | 2005 | 911 Carrera S | Engine
This is something I saw on you tube.
READ ANSWERI need a tire recomendation for summer driving, no rain. 16" wheels.
Friday 07/04/2025 | 1994 | 968 Cabriolet | Wheels and Tires
I would love to find the optional 17" wheels, but no luck.
READ ANSWERignition switch won't turn
Friday 07/04/2025 | 2004 | 911 Carrera | Other
Key goes into ignition switch but will not rotate to the right to start position.
READ ANSWERPSM intermittent.
Thursday 07/03/2025 | 2010 | Boxster | Electronics
I've had the driver assistant module replaced 4 times. There is a high pitched squeak that comes from the steering wheel. Technician states units replaced are faulty. This happens after 100+miles again and again. Any thoughts on the squeak and PSM failure? Thanks KFM
READ ANSWERon a 2014 cayman s those electronic transmission mounts that fail often that we know Porsche won't do anything about a common problem from what i read is there a way to repair them or just bite the bullet and pay $1200.00 for a new one
Wednesday 07/02/2025 | 2014 | Cayman S | Transmission/Clutch
READ ANSWERHad tune done. Should I replace diverter valve?
Tuesday 07/01/2025 | 2018 | 718 Cayman | Engine
New to Porsche. Had an APR tune done and am reading about replacing the diverter valve as a good practice. Such as Flat6 EVOMS. Thoughts. This car only has 1 valve, correct?
READ ANSWERHow do i contact Pedro directly?
Monday 06/30/2025 | 2002 | Boxster S | Other
I submitted a question concerning my ac vents and Pedro responded to contact him directly. I would like to know how.
READ ANSWERNumeric Shifter Cables
Sunday 06/29/2025 | 2008 | Cayman S | Cables and Controls
What has been the experience in satisfaction of those who have installed just Numeric shifter cables versus cables and short shifter?
READ ANSWEREcu issues?
Saturday 06/28/2025 | 2006 | Boxster S | Electronics
Car shut off on interstate. Moved to break down lane. Cranked numerous times without restarting. While starting "Oil Pressure too low for Start" flashed. Towed in, fuel gage had been cycling from 3/4 to 1/4 for a few days. Used Autel to pull codes, then cleared. Added some gas and started - no new codes, no messages. Driven short distances since then, idles rough, notice when sitting completely still, gage shows 1 or 3 MPH. Do ECUs go bad? Reprograming called for? ...
READ ANSWERShould I use high impedance fuel injectors (15 Ohm) in my unmodified 1987 911?
Saturday 06/28/2025 | 1987 | 911 Carrera | Fuel System
I would like to change out my original fuel injectors. My question is regarding original style low impedance injectors (2-3 Ohm) vs higher impedance injectors (15 Ohm). It seems that replacement low impedance injectors aren't available (or are very expensive), and high impedance injectors are just the opposite - available and much cheaper. My local fuel injector shop says using high impedance injectors is not a problem, that the DME will signal the injectors with less current, ...
READ ANSWERLooking for advice on a DME report
Saturday 06/28/2025 | 2012 | Cayman R | Engine
I am looking at purchasing this Cayman R and would like some advice on this DME report.TIADon
READ ANSWERThe key will not open the deck lid. Has anyone trouble shooted one before? The inside switch still works.
Friday 06/27/2025 | 1994 | 968 Cabriolet | Body
READ ANSWERFix ac vents from leaking
Friday 06/27/2025 | 2002 | Boxster S | Heating and Ventilation
Would like to know the product that helps fix the ac vent from fogging windshield
READ ANSWERCertified Tampa Mechanic/Garage recommendation
Friday 06/27/2025 | 1986 | 944 | Other
Hi,New to Tampa. Need recommendations for certified mechanics in the area.Nothing difficult, just annual maintenance and install of belts and AC Compressor.Thanks for any guidance!Karlkfracke@hotmail.com
READ ANSWERCan cooling and /or lumbar support be added to a 996 or later seat, with or without heat already optioned? Where would the switches go? Can I do this myself?
Thursday 06/26/2025 | 2005 | 911 Carrera 4S Cabriolet | Other
I’m searching for a 911 cabriolet ( possibly 996 or 997 ) with seats comfortable for my 6’6” slender frame. I would like lumbar support, heating and cooling.1) Can these features be retrofitted?2) Can I do it myself? I’m moderately experienced with working on cars, but not on Porsches.3) What cost might be entailed?4) Does the car need reprogramming when such changes are made?Thanks very much in advance for your time and for sharing you ...
READ ANSWER