Diagnostic machine reads its running rich number three cylinder misfire fuel preshure sensor bad
Pontiac Q&AAsk Your Question
2001 Pontiac Grand Am Question: My check engine light is on and it reads number 3 cilender misfire iv replaced s
Answer #1asksteevies March 06, 2014, 00:57Master
Unplug vacuum line off of fuel sensor see if fuel bypassing, check spark caps
Answer #2pushrod March 06, 2014, 05:44Master
Do you have the actual code numbers? Do you mean the fuel tank pressure sensor? Need the numbers!!
take it to your mech it needs further diag to be sure whats actually wrong we would only be guessing