When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
W00t!! Replaced my thermostat over the weekend and now my dash is CEL free!! My gas mileage has also increased from a lowly 18mpg city to a slightly more respectable, but equally pathetic, 23mpg city.
Yeah in my case it solved the problem, but the P0420 appeared at almost the same exact time as the P0128, so I'm pretty sure they were connected to begin with.
ORIGINAL: Adionik
Thermostat increased MPG?
Having my engine running at the correct operating temperature, along with all the other factors involved increased MPG...
Yeah in my case it solved the problem, but the P0420 appeared at almost the same exact time as the P0128, so I'm pretty sure they were connected to begin with.