Been having a high idle issue since I bought my truck. No sure if it's a normal thing or if I have a problem but my truck will idle around 1k to 1100 rpms if I blip the throttle or sometimes if I drive in 1st gear for a short distance. I can get it to idle back down if I smash the brake pedal and hold it but it's annoying if I'm crawling in traffic to stop and wait a few seconds for it to want to act normal. Thanks.