Need help with this.fiew codes were puled.

bock

Founding Member
Jan 7, 2002
642
0
17
Montreal,Qc
I have a ranger 1995 2.3 in a 90 mustang.Was running great for years.


But now it suck gaz like a school bus.

I notice also that it ping at high speed(60-70 mph) when trying do go faster.

Here are the codes.

172 (R,M) Oxygen sensor not switching - system is or was lean - Single, Right or Rear HO2S - Fuel control

538 (R) System did not receive "goose" test

I checked the timing.Its at 20° with the sput out.I know it should be at 10°.

When i put back the sput on, the timing just dont move and stay at 20°.

So the code 172 say its lean but its hard on gaz!?
 
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