91 blue ranger
Member
- Joined
- Feb 25, 2019
- Messages
- 74
- Reaction score
- 12
- Points
- 8
- Vehicle Year
- 1991
- Make / Model
- ford
- Engine Size
- 4.0
- Transmission
- Manual
Hello, I have a 1991 Ford ranger that has a high idle. Checked for vacuum leaks and found no leaks. When I start the truck i revs up to 2,000 rpms, and stays there for 5 seconds then goes down to 1,500 rpms, then after a while longer goes to 1,000. I replaced the IAC but that did not help. If I rev the engine (warm or cold) it always goes up to 1,800 to 2,000 rpms stays there for 5 seconds or longer. Then drops to 1,200 then to 1,000. If I am driving the rpms will not come down from 2,000 rpms. If I am moving and push in the clutch it will stay at 2,000 rpms until i come to a complete stop. I replaced the transmission with a M5ODR1-HD ( so it does not have the neutral sensing switch). If I am parked and very slowly press on the gas petal it revs up to 1,800 2,000 rpms, ( even tough I only pressed the gas petal in so that it should have gone up only 100 rpms. If i unplug the IAC it idles around 1000 and if you rev it it falls nicely.
Also some time i have to push on the gas petal to make it start.
Any help is greatly appreciated.
Thanks, Solly
Also some time i have to push on the gas petal to make it start.
Any help is greatly appreciated.
Thanks, Solly