I am trying to fix my wife's 2001 Jetta, AZG engine, 80,000 miles. I have always been a do it your self kind of guy and recently changed out brakes, sway bar links, spark plugs, wires and a few other odds and ends, but I am running into a problem. Check engine light has been on for some time.
I recently replaced the ignition coil. I had brought it to a shop to have the codes read and they could duplicate the VERY bad misfiring when there was moisture in the air with a spray bottle. Instead of paying the $485 they wanted to charge I decided to do it myself. I purchased the coil from Autohausaz. It was about $100 less than the dealership.
Glad I did, because the original one had huge cracks in it, which would explain the major problems with moisture. At the same time I cleaned the mass air flow sensor.
Now the engine will not down shift (automatic). Highway speeds (65 mph) brings the RPM up over 5500. I put back in the old coil to see if that was it, but it did not change a thing. I am thinking the mass air flow sensor is completely shot or I ruined it cleaning it (used mass air flow cleaner). I am about at my wits end and will probably bite the bullet and bring it to the dealership, pay the money and get it fixed for good.
What would cause the engine to not down shift?
I recently replaced the ignition coil. I had brought it to a shop to have the codes read and they could duplicate the VERY bad misfiring when there was moisture in the air with a spray bottle. Instead of paying the $485 they wanted to charge I decided to do it myself. I purchased the coil from Autohausaz. It was about $100 less than the dealership.
Glad I did, because the original one had huge cracks in it, which would explain the major problems with moisture. At the same time I cleaned the mass air flow sensor.
Now the engine will not down shift (automatic). Highway speeds (65 mph) brings the RPM up over 5500. I put back in the old coil to see if that was it, but it did not change a thing. I am thinking the mass air flow sensor is completely shot or I ruined it cleaning it (used mass air flow cleaner). I am about at my wits end and will probably bite the bullet and bring it to the dealership, pay the money and get it fixed for good.
What would cause the engine to not down shift?