1998 GTI, 4cyl. First gear power loss at 3000 rpm. Second gear power loss at 2800 rpm. Third gear power loss at 1800 rpm. When I lift off the gas,rpm's drop and the engine regains power. Check engine light is on. This problem started when I relocated the battery to the trunk of the car. HELP PLEASE?

I finally found a fix. My car needed a throttle body alignment which would have cost a few hundred dollars at the VW dealership. So I searched online for alernatives and this is what I found. It worked for me:
Disconnect the negative terminal from the battery and wait about 15 minutes or so. Reconnect the terminal, insert key and turn to ACC and then you should start to hear the throttle body clicking as it tries to self align. Wait at least 3 minutes until you stop hearing the engine clicking and there is NO noise coming from the compartment. Turn the key to off, then start her up.
Crazy, but so far so good!!! Hope it works for you. I finally found a fix. My car needed a throttle body alignment which would have cost a few hundred dollars at the VW dealership. So I searched online for alernatives and this is what I found. It worked for me: Disconnect the negative terminal from the battery and wait about 15 minutes or so. Reconnect the terminal, insert key and turn to ACC and then you should start to hear the throttle body clicking as it tries to self align. Wait at least 3 minutes until you stop hearing the engine clicking and there is NO noise coming from the compartment. Turn the key to off, then start her up. Crazy, but so far so good!!! Hope it works for you.

Thanks but that wasn't it. I neede to realign the throttle body. Thanks but that wasn't it. I neede to realign the throttle body.