I have an 04 Mercury Sable with 142,000 miles. My check engine light came on and I took it to get the code(s) pulled. The code was P0420. I took it to the shop and they said the rear exhaust manifold was cracked. Can a crck exhaust manifold cause bad fuel mileage?
have the same problem?
Saturday, January 22nd, 2011 AT 4:07 PM