Stock 99 EM1 - p0172 & p0170
12-21-2010, 10:08 PM
#1
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Stock 99 EM1 - p0172 & p0170
Been lazy and had a cell for over a week now, I dont know if they came on at same time or different times.
In a 99 em1.
P0172 Fuel mixture rich
P0170 FUEL TRIM MALFUNCTION
ideas on whats wrong?
In a 99 em1.
P0172 Fuel mixture rich
P0170 FUEL TRIM MALFUNCTION
ideas on whats wrong?
12-25-2010, 08:06 AM
#6
Re: p0172 & p1070
Those two codes indicate that the engine is running too rich (=too much fuel).
Check the primary O2 sensor and the fuel system (e.g., high pressure, stuck closed FPR, stuck open injector).
Check the primary O2 sensor and the fuel system (e.g., high pressure, stuck closed FPR, stuck open injector).
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