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Ron, ASE Certified Technician
Category: Ford
Satisfied Customers: 23821
Experience:  23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
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Ford ranger: have a 1993 ford ranger with a 2.3 liter

Customer Question

have a 1993 ford ranger with a 2.3 liter failed emission due to high nox readings.could not find egr valve.truck has over 150,000 miles on it need to know where to start.have been told cat is bad,add additive.also has been sitting for awhile
Submitted: 2 years ago.
Category: Ford
Expert:  HDGENE replied 2 years ago.
Hello, NOX is usually due to the engine running at a higher temperature such as a restricted catalytic convertor. When you say its bad it is plugged and having a drivability/lack of power issue or setting a check engine light and P0420 cleaning type code? Does it run ok?Do you have egr codes and why you are looking for it? some models delted the valve but would have to check application