1991 Toyota Pickup Repair Question
1991 toyota pickup
If you know how to do a back pressure check on the exhaust system to rule out the Catalytic Converter do so comeback with a reading of 2lbs below.
Further investigate the EGR and MAF sensor.
Any OBD1 codes. This problem can be a bear to find.
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i dont think the cat is hooked up i think its straight pipe
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