986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - 99 Boxster hot start problems

craigf103 · 10-10-2010, 07:36 PM

I replaced my crankshaft position sensor to try and fix my hot start problem and unfortunately it didn't help. It is relatively easy to do once you take the right rear wheel off. A few weeks later I got a CEL and took it in to my local INDE Porshce shop. The read the codes and initially told me the MAF sensor was bad which I was kind of skeptical about since the MAF seems to be often misdiagnosed as the problem. They replaced the MAF sensor and found it didn't solve the problem so actually started doing some more detailed diagnosis and found the fuel level sending unit and fuel pump and that did clear the CEL and solve my hot start problem finally! They took the new MAF sensor back out so I didn't get charged for that.

10-10-2010, 07:36 PM	#13
craigf103 Registered User Join Date: Oct 2009 Location: Arizona Posts: 2	Hot Start - Crankshaft Position Sensor I replaced my crankshaft position sensor to try and fix my hot start problem and unfortunately it didn't help. It is relatively easy to do once you take the right rear wheel off. A few weeks later I got a CEL and took it in to my local INDE Porshce shop. The read the codes and initially told me the MAF sensor was bad which I was kind of skeptical about since the MAF seems to be often misdiagnosed as the problem. They replaced the MAF sensor and found it didn't solve the problem so actually started doing some more detailed diagnosis and found the fuel level sending unit and fuel pump and that did clear the CEL and solve my hot start problem finally! They took the new MAF sensor back out so I didn't get charged for that.