420a-t
15+ Year Contributor
- 609
- 4
- Jun 13, 2005
-
Idaho Falls,
Idaho
I've been getting idle surge issues sometimes when my car is in park. It doesn't happen all the time, but after I drive it for more than 15 minutes is when it can occur usually. Also, I have my idle set to 900rpms and it idles ok at first; but if I drive it around and warm it up, I put it back in park and the rpms go up to around 2000rpms and stay there 
What would cause these? Are they related? I noticed today that my coolant temps were 210 when I parked it and the rpm's went up, would this have an effect? Both of these problems have been going on since I did a 1g head swap, 264/272 cams, 1g tb, smim, holset h1e, GM 3 bar map, 10mm wires, bpr8's.
Any suggestions?
What would cause these? Are they related? I noticed today that my coolant temps were 210 when I parked it and the rpm's went up, would this have an effect? Both of these problems have been going on since I did a 1g head swap, 264/272 cams, 1g tb, smim, holset h1e, GM 3 bar map, 10mm wires, bpr8's.
Any suggestions?
