cruise control problems
#1
cruise control problems
My 08 f250 5.4 4x4, had intermittent crusie control for a while and now it just don't work. I was wondering if anyone has had this problem, I think it is just a fuse or relay. I would like help in finding the fuse or relay (pictures and location please).
Also, where is the cabin air filter located.
thx
Also, where is the cabin air filter located.
thx
#2
https://www.ford-trucks.com/forums/8...ir-filter.html
#3
As for the cruise, there are probably folks here who know it better. From what I can read, it appears the Powertrain Control Module (PCM) controls the cruise control (or Speed Control, as Ford calls it in their manual).
PCM Inputs are:
Output Shaft Speed (OSS) Sensor
Digital Transmission Range (TR) Sensor
Speed control switches (on the steering wheel)
Clutch Pedal Position (CPP) switch (manual transmission)
Speed control deactivator switch
Stoplamp Switch
Accelerator pedal position sensor
Its outputs are:
Speed control indicator lamp (on the instrument cluster)
Throttle command
I did not see any fuses or other easy fixes. The steering wheel switch is relatively easy to swap out.
Do you have access to a scan tool to read the DTCs? The whole diagnosis procedure seems to rely on using it to find out what the computers are seeing.
PCM Inputs are:
Output Shaft Speed (OSS) Sensor
Digital Transmission Range (TR) Sensor
Speed control switches (on the steering wheel)
Clutch Pedal Position (CPP) switch (manual transmission)
Speed control deactivator switch
Stoplamp Switch
Accelerator pedal position sensor
Its outputs are:
Speed control indicator lamp (on the instrument cluster)
Throttle command
I did not see any fuses or other easy fixes. The steering wheel switch is relatively easy to swap out.
Do you have access to a scan tool to read the DTCs? The whole diagnosis procedure seems to rely on using it to find out what the computers are seeing.
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