95 Nissan Maxima start issues

ANDREWBERNIER83

MEMBER
1995 NISSAN MAXIMA
6 CYL
FWD
AUTOMATIC
177 MILES

I have a 95 nissan maxima with the trouble code P0173 (fuel injection system lean or rich left bank). Iv replaced the front and rear crankshaft sensor and camshaft sensor. When I go to start it, it seems to pull out electricity making it hesitant to start but does. Could this fuel code have anything to do with that and what else can I do? Thank you for any help.

Saturday, December 25th, 2010 AT 11:54 PM

1 Reply

JACOBANDNICKOLAS

MECHANIC
110,176 POSTS

A lean mixture is usually caused by a vacuum leak, but can also be caused by a O2 sensor and a few other things such as a bad fuel pressure regulator, fuel pump, temp sensor. A rich mixture can be caused by all the things listed above except the vacuum leak. It is hard for me to tell exactly the cause.

I looked up code 86 which is a nissan code that crosses to the PO173. It doesn't indicate if it is lean or rich. It fuel system malfunction left. That tells me the right bank of the engine is running properly. Now I'm thinking O2 sensor for that bank or a catalytic converter issue.

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Monday, March 21st, 2011 AT 2:42 AM