Please Help With Trouble Codes

jas7865 · 03-05-2006, 06:36 PM

Well heres what I got,PO172-SYSTEM TOO RICH BANK1,PO175-SYSTEM TO RICH BANK2,AND PO300 RANDOM MUTIPLE CYLINDER MISFIRE DETECTED, WHAT DOES IT ALL MEAN? I HAVE NO IDEA WHERE TO LOOK IVE REPLACED WIRES,PLUGS,CAP,ROTOR,AND THE ING MODULE ABOUT 3 MONTHS AGO,ITS SOUNDS TO ME LIKE MAYBY IT JUMPED TIME BUT I CANT BE SURE, TRIED UNHOOKING CONVERTER WITH NO CHANGE,IT STILL RUNS BUT IT DIES AND RUNS LIKE CRAP. PLEASE HELP THIS IS A DAILY DRIVER,ALMOST FORGOT ITS A 95 S-10 4.3

MT-2500 · 03-06-2006, 07:41 PM

Take them cap lock off!!!
Your system is running rich for some reason.
What is the engine code Z or W? TBI or MPI?
What is the fuel pressure? any fast leak down on fuel pressure after engine is off? What kind of plugs did you feed it?
Mt

jas7865 · 03-08-2006, 06:56 AM

engine code is x plugs are ac delco it wont even start now acts like it wants to ,dont understand what you mean about taking the cap locks off

MT-2500 · 03-08-2006, 09:37 AM

If a no start first check for good hot spark to two or more spark plugs.
If good spark move on to and check fuel system like fuel pressure fuel pump running and have a look at that fuel filter.

Cap locks is all capital letters. Look at your first post Very hard to read and is considered shouting.

Mt

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