My daughter has a 2002 VW Beetle and her coolant flange blew a hole so I purchased the part and replaced it reassembled. when I reassembled I noticed that her secondary air hose was cracked off so I replaced the one going to the solenoid in back area not the one on the intake. upon starting the car and driving it did great then about 10 min into driving I stopped on incline and the car kind of stuttered before it took off, then about 12 min into drive I came to a stop and would rev engine to 5000RPM and car would barely go forward but will go backwards everytime. so I thought it may have been the shift sensors, replaced them then test drove it same thing. It seems that when the car is cool it runs and shifts well all the way up to hwy speed no problem gets warmed up and will not accelerate at all. Please let me know if you have had this problem or did I knock something loose when I replaced the flange???