1988 928 porsche runs well 20 seconds then loses cylinders on both banks

1988 928 starts and runs goodfor 20 seconds then lose cylinders on both banks comp. good shut off and restart does same thing 4 answers

Are they reliable at high milage 4 answers

boxter engine 8 answers

what are the advantages of a boxter engine?

o2 sensor for pontiac bonneville 96 3 answers

how many banks are there

P0420 bank 1 code 3 answers

my check engine light is on and it shows the P0420 code for bank 1. My car has 4 converters on it and the temp guage goes up when it sits for awhile idling. Was wondering if anyone thinks it is a bad ...