# Accelerating at idle **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** engines, ford, ranger\ **Created:** [May 2, 2010, 4:15pm UTC](https://community.cartalk.com/t/accelerating-at-idle/48265 "2010-05-02T16:15:43Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![JerryJ](https://avatars.discourse-cdn.com/v4/letter/j/ed8c4c/32.png) [@JerryJ](https://community.cartalk.com/u/JerryJ)\ **Post date:** [May 2, 2010, 4:15pm UTC](https://community.cartalk.com/t/accelerating-at-idle/48265/1 "2010-05-02T16:15:43Z")
1998 3.0, v6. Manual Trans, A/C, approx 190thousand miles. When coming to a stop the engine actually increases RPM’s and runs at this increased RPM until I shut the engine off. When I restart engine still racing. It does this intermittentaly approx 50% of the time doesn’t matter if A/C is on/off. Have replaced O2 sensor, idle air control valve, EGR solenoid, and valve. Had the last done on 4/23 on 5/1 it was back to idling high. This has been a ongoing problem for about 5 years, replace items works for a short time and then back to the idling high. ---
**Author:** ![Roadrunner](https://avatars.discourse-cdn.com/v4/letter/r/d2c977/32.png) [@Roadrunner](https://community.cartalk.com/u/Roadrunner)\ **Post date:** [May 3, 2010, 1:27am UTC](https://community.cartalk.com/t/accelerating-at-idle/48265/2 "2010-05-03T01:27:54Z")
Check the TPS (Throttle Position Sensor). A loose or broken TPS can cause intermittent bursts of fuel into the injectors and and unstable idle because the PCM thinks the throttle is moving. ---
**Author:** ![cigroller](https://avatars.discourse-cdn.com/v4/letter/c/c68b51/32.png) [@cigroller](https://community.cartalk.com/u/cigroller)\ **Post date:** [May 3, 2010, 2:01pm UTC](https://community.cartalk.com/t/accelerating-at-idle/48265/3 "2010-05-03T14:01:06Z")
In addition to checking the TPS, has the throttle body ever been cleaned? The cable/return spring mechanism should also be inspected for binding/sticking