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emission problem

Sent to Car Experts February 25, 2005 2:40 p.m.

I have a 1991 plymoth voyager with over 200,000 miles it has failed emissions with hith HC at idle but OK at high speed. Computer codes are 12 and 54. What can i test to find the problem?

Customer (name blocked for privacy)

Status: Closed Value: $5

Answer
February 25, 2005 6:57 p.m. (4 hours and 16 minutes later)

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Tech501 -- Auto Service Technician -- 96% Positive Feedback on 739 Car Accepts
38 years exp, ASE Mastertech with L1 Advanced Engine performance

Info Request
February 25, 2005 8:01 p.m. (1 hour and 4 minutes later)

Tech 501 is right that engine is old. And maybe worn out.

Marc -- Technician,Auto -- 98% Positive Feedback on 1027 Car Accepts
32 years exp. automotive repair NYS emisisions repair cert.

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