When I start my Bronco It idles at 1200 RPM, Then surges between 1100-1000RPM and will jolt hard into reverse or drive and will want to accelerate up to 14 MPH without hitting the gas pedal. Is my idle to high and what is my Bronco supposed to idle at?
A little more information would be helpful to better help with your issue.
What year Bronco and what engine?
Have you tried checking for engine codes?
Is this idle only happening when cold or at all times?
When cold, most EFI controlled vehicles will be in 'Open Loop' mode which throws in more fuel to help bring the engine to proper operating temperature. The idle is typically higher in open loop, but it sounds as if yours is too high.
What I would first do is check for engine codes. If your truck is 1995 or older, checking the codes is incredibly easy. You just need a paperclip and need to jump two pins on the diagnostic port. It may be in a different location depending on the year of your truck, but the process is the same.
Thank you max! I pulled code and got 17 different codes, Ouch. But many were for the TPS but before I checked codes I let it sat for a week when I tried to start it, it would crank and sputter. I spray starting fluid in and it even made it harder to crank! Could it be a bad distributor or pip?