Help with surging at speed
Thread Starter
1992 F-150 XLT
Joined: May 2012
Posts: 17
Likes: 0
From: BC, Canada
Help with surging at speed
Hello again everyone!
Since I've now swapped out my bad water pump and got the truck back to where it's running again, I figure it's time to tackle the next issue(s). (thanks again to everyone for the WP help!)
The truck seems to surge whenever I try to keep the speed at 50 km/h (yes, I'm in Canada). It feels like the throttle just doesn't register that I'm keeping the pedal at the same spot and kicks on and off.
A friend at work here has a code reader so we ran the full test and it came back with a 121. From what I've read and seen that's the Throttle Position Sensor and logically (in my mind at least) it makes sense with what I've been experiencing.
I guess my questions are what should I be checking with the TPS (if anything) or is this just a replace it and see if it fixes the issue?
Is there anything else that would commonly throw a 121?
Thanks again!
Since I've now swapped out my bad water pump and got the truck back to where it's running again, I figure it's time to tackle the next issue(s). (thanks again to everyone for the WP help!)
The truck seems to surge whenever I try to keep the speed at 50 km/h (yes, I'm in Canada). It feels like the throttle just doesn't register that I'm keeping the pedal at the same spot and kicks on and off.
A friend at work here has a code reader so we ran the full test and it came back with a 121. From what I've read and seen that's the Throttle Position Sensor and logically (in my mind at least) it makes sense with what I've been experiencing.
I guess my questions are what should I be checking with the TPS (if anything) or is this just a replace it and see if it fixes the issue?
Is there anything else that would commonly throw a 121?
Thanks again!
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Joined: Dec 2009
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From: Arlington Heights, IL