Question about 1999 Pontiac Firebird
I'm getting trouble code 172, 175 and 306. Fuel mixture too rich, right bank and cyl 6 misfire. The car is hard to start, blue smoke pours out of tail pipe during start, car idles rough and stalls when I slow to a stop. The stall is coincides with a drop in voltage (goes from a nominal 14.4 to 8 volts.) Battery and alternator test good (both are < one year old.) Fuel filter and pump are brand new. A mechanic told me the catalytic converter was bad, so I had it replaced...no change in the above symptoms. The problem has gotten progressively worse over the past year with the stalls happening more frequently, but this is the first time these trouble codes had surfaced. I was orignally getting code 440 - EVAP malufunction, but haven't seen that code in three months. Any ideas? Could it be the injector?
Look at spark plug 6 see if it is foul out with oil. when you first start you car up and it smokes blue you have leaking valve seals and stop up oil return holes.if all is good .check 6 injector make sure its getting power.
Posted on May 16, 2009
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Posted on Jan 02, 2017
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