Incorrect Valve Adjustment Fallout...
I recently had my 90k service performed on my Honda Civic EX 2000 at a Firestone Complete Auto Care. This included spark plug replacement, ignition wires replacement, fuel system tune up, valve adjustment, etc. As soon as I left with my car I noticed something was definitely wrong with my Honda. The RPMs were sporadic and would go to just above bottoming out at the first stop light I reached. I was concerned about the vibrations but thought it would subside and the RPMs would return to normal levels, but is only continued and became more frequent. After a month I brought my car back to Firestone to explain the problems I was experiencing and they said that the car checked out and there was nothing they can do without an engine light coming on. The vibrations only got worse and within a week a check engine light went on. I brought the car back again and Firestone finally took my car to a Honda dealership, which had to re-due the value adjustment because it was out of spec. They also said the O2 sensor error was showing up and that is why the check engine light came on. I have never had a problem with my Honda before and none of these problems existed before the 90k service was performed.
I need to know if the O2 error could be contributed to the incorrect vale adjustment (excess vibrations) and if there is anything else I should be looking out for because of the incorrect work.
I would greatly appreciate any help.
Ben Jones