Hi everyone the car is running a really high idle. I’m
Stumped and need opinions. It’s a 302 mass air car. Just had it tuned at diagos drive fantastic took it racing the next day after the first pass idle spiked I replaced the iac with a used one I had it ran great on my way to work yesterday idle spiked again. I have new coolant temp
Sensor tps is adjusted if I disconnect iac the idle drops checked for vacuum leaks everything checks out. I replaced the iac again and it didn’t change anything this time. It’s a new Motorsport harness so I’m not sure what to do I want to enjoy the car for a few more weeks since it’s been down all summer but I want it running normal again