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Hey guys i have a 98 cobra vortech supercharged and has a code po175(system to rich bank2)also po320 (igntion/distributer engine speed input circuit),p1150 ( lack of ho2s21 switches fuel trim at limit,also p1152 (lack of ho2s21 swithec sensor indicates rich , also po172 (system too rich bank 1) , also po1130 and po1132 .... car has 50 lb injectors ,12 lbs of boost , sx fuel system ...have 40 psi of fuel pressure ... car wont start and backfires ( sounds like a gun going off ) ive seen other post like this on here but know one posted what they found out ? please help thanks tony ...... you can txt or email ...cell 607-221-8737
 

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did you check the plugs ?
did a compression test ?
 

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Can monitor your key on engine off voltage to your 02 sensors? They should be 0v.
Does it run with the MAF unplugged ?


Also check for v ref at the tp sensor

Check power at pin 13 at the DLC?

While cranking the engine does the tach show your rpm signal?

Check fuel pressure. Is it about 40psi?

The p0320 is a tough code. Could mean a bad PCM. Also double check
The circuits for the heater circuits make sure u don't have a damages harness somewhere. Maybe that's all that it is. Let me know if u need more help.
 
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