Falkasorus
Junior Member
- Joined
- Mar 20, 2021
- Posts
- 18
- Reaction score
- 0
- Location
- Wi
- First Name
- Jake
- Truck Year
- 1987
- Truck Model
- R10
- Engine Size
- 350
What could cause code 21 and 22
TPS
- Thread starter Falkasorus
- Start date
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Bextreme04
Full Access Member
- Joined
- May 13, 2019
- Posts
- 4,232
- Reaction score
- 5,167
- Location
- Oregon
- First Name
- Eric
- Truck Year
- 1980
- Truck Model
- K25
- Engine Size
- 350-4bbl
Best guess off the cuff would be one of these things in this order of likelihood:
- TPS bad
- Vaccum leak
- IAC valve issue
- intermittent wiring issue
- ECU
