Just wanted to share an experience I had today. My '01 GTP has 213,000 miles on her and is doing great. I just changed the plugs and have to admit I was hesitant to roll the engine forward to get access to the back plugs but after I got into doing it I was OK.
I bought a Haynes manual for her and it has been a life saver along with the tips and encouragement from the forum.
I have had a couple of MAF sensors go bad and that caused some weird problems and I thought I had one yesterday when the idle speed of the engine just jumped to over 2000 rpm for no good reason. I was just driving along at a low speed and all of a sudden the rpm jumped up and would not come down. Since I needed to replace the plugs and wires anyway I started there but I knew that was not the problem.
A while back I had changed the IAC valve and decided to check it out just to be sure it was working OK. When I pulled it out I got the valve, the spring and the shaft but the needle was still in the throttle body.
Looking closer I found the needle was just sitting in the seat and I was afraid it would fall out and land inside the throttle body. I took the shaft out of the valve (it just unscrewed) and threaded it into the needle and was able to extract the needle from the housing and reassemble the valve. I set it to the recommended 1.125 inches in the manual and reassembled it and it worked great.
The car is running great again and has that old power back that I love so much. I was cruising at 80mph on the on ramp of the freeway and had to slow down to merge
I do notice it is running a little rough at idle but I just added a can of seafoam to the gas and am running it out to see if that will settle things down. It's OK but I think it can be a little smoother sitting at a light. We'll see.
Thanks to everyone that contributes on the forum. It is a big help for a mech-tard like me when it comes to working on these beasts but there is a certain amount of satisfaction to working on the car and then doing a successful test drive. It's been a good day
