Question about 2005 Ford F-150
When driving down the road it will return too 500 rpms and will not have any throttle responce. But when you shut it off and restart it runs fine. Seem's too be intermitting
Have you had the check engine light read with a scanner yet? It could freatly help me diagnose this for you.
If you haven't, you can stop by most shops and have it done (it doesn't cost too awful much anymore). Or, you can buy a cheap scanner from any auto parts store (the cheaper the unit the less info it gives, but its helpful nonetheless), Or, you can swing by AutoZone or another part store that offers diagnostic scanning nfor free.
Or, you can try this:
Turn the ignition switch to the on position (without engaging the starter). Immediately after, turn the switch off, on, off and then on. Now, observe the check engine light.
The check engine light should begin to flash a series of codes. The flashes will be separated by short and long pauses. The long pauses separate the "ones" and "tens" positions, and each code from the next.
For example, for a code 55, you'll see the check engine light flash five times, followed by a short pause, then it will flash five more times. It usually repeats the code reading three times. Then, it will move to the next code.
Watch the following video for an example (a code 55 will be displayed at the end of the test).
I'll be near my computer for most of the day. Let me know what you get for codes. I suspect that it is going to be a fairly simple fix (probably the throttle position sensor or the vehicle speed sensor).
Posted on Jan 16, 2009
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Posted on Jan 02, 2017
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